CN107130950A - A kind of exploitation method of thick oil type oil deposit - Google Patents

A kind of exploitation method of thick oil type oil deposit Download PDF

Info

Publication number
CN107130950A
CN107130950A CN201710544538.2A CN201710544538A CN107130950A CN 107130950 A CN107130950 A CN 107130950A CN 201710544538 A CN201710544538 A CN 201710544538A CN 107130950 A CN107130950 A CN 107130950A
Authority
CN
China
Prior art keywords
oil
well
liquid
oil reservoir
reservoir
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710544538.2A
Other languages
Chinese (zh)
Inventor
李向东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Li Xiang Dong
Original Assignee
BEIJING DONGFANG ASIAN PETROLEUM TECHNOLOGY SERVICE Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BEIJING DONGFANG ASIAN PETROLEUM TECHNOLOGY SERVICE Co Ltd filed Critical BEIJING DONGFANG ASIAN PETROLEUM TECHNOLOGY SERVICE Co Ltd
Priority to CN201710544538.2A priority Critical patent/CN107130950A/en
Publication of CN107130950A publication Critical patent/CN107130950A/en
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
    • C09K8/594—Compositions used in combination with injected gas, e.g. CO2 orcarbonated gas
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/164—Injecting CO2 or carbonated water
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
    • E21B43/168—Injecting a gaseous medium
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection

Abstract

The invention discloses a kind of exploitation method of thick oil type oil deposit, comprise the following steps：Pass through oil well or/and the sleeve pipe or/and oil pipe of the water injection well that oil recovery production can be carried out, the methyl naphthalene being in a liquid state under 1-10 tons of normal temperature, methyl naphthalene liquid, the mixture and 50-10000 standard cubic meter special gases of any two or more arbitrary proportion mixing of extraordinary organic liquid are added near wellbore zone oil reservoir, the mixture is pushed into oil reservoir with special gas, the smooth seepage flow of crude oil in oil reservoir deep is entered oil well or/and the water injection well of oil recovery production can be carried out, then crude oil is risen into ground from oil well or/and the water injection well that can carry out oil recovery production.The present invention can effectively solve the problem that asphalitine of the crude oil in oil reservoir mutually separates out problem, being capable of effective heavy crude producing type oil reservoir, thick oil type oil deposit cost of winning is greatly reduced, extend the oil well production cycle, increase oil well output, improve oil reservoir ultimate recovery, and implement easy, it is safe and reliable, remarkable in economical benefits.

Description

A kind of exploitation method of thick oil type oil deposit
It is 04 month 2010 12 days, Application No. the applying date that the application, which is,：201010144443.X, it is entitled：" one The divisional application of kind exploitation method of thick oil type oil deposit ".
Technical field
The present invention relates to a kind of crude oil production method, especially a kind of exploitation method of thick oil type oil deposit.
Background technology
At present, in crude oil production exploitation, inevitably heavy crude producing type oil reservoir.Such as publishing house of University of Petroleum 2000 The 1st printing in July the 1st edition《Oilfield chemistry》" why thick viscous crude is, mainly due in oil described in the 13-14 rows of page 175 Colloid, asphalt content it is high.The colloid of crude oil, asphalt content are higher, and oily viscosity is higher "；And because in viscous crude Asphalitine can be formed insoluble in oil, be also insoluble in the asphalitine phase of water；If thick oil type oil deposit original temperature or its exploitation Temperature during seepage flow is less than or equal to the asphalitine phase Precipitation Temperature that the oil reservoir contains viscous crude, and the viscous crude contained is in oil reservoir (or oil Layer) in will separate out asphalitine phase；Because asphalitine mutually has certain physical dimension and geometric volume, when the physical dimension and several What volume, which reaches, will block oil reservoir hole pore throat during certain value, influence viscous crude seepage flow in oil reservoir；In other words, thick oil type oil deposit Probably due to itself original temperature contains the asphalitine phase Precipitation Temperature of crude oil and causes crude oil to be separated out in oil reservoir less than it Asphalitine phase, it is also possible to cause crude oil to be separated out in oil reservoir in itself and inevitably because exploiting such thick oil type oil deposit process Crude oil in asphalitine phase, therefore such thick oil type oil deposit produces or separated out asphalitine phase, produced or analysis easily in oil reservoir The asphalitine gone out mutually easily causes the blocking of oil reservoir near oil reservoir or oil well, and causes viscosity increase of the crude oil in oil reservoir, from And flowing (seepage flow) of the crude oil in oil reservoir is influenceed, and then influence oil well normally production and thick oil type oil deposit exploitation；If do not adopted Effective method is taken, greatly, cost of winning is high, can cause whole oil reservoir can not when serious for such thick oil type oil deposit exploitation difficulty Normal exploitation, causes mass energy to waste and economic loss.
The method of existing thick oil type oil deposit has steaming process, shaft bottom electromagnetic method, oil reservoir electrothermal way, ripple method, artificial earthquake method, pressure The methods such as method, emulsion process, water flood are split, there are different defects.
Steaming process is that high temperature and high pressure steam is injected into oil reservoir, using the heat thick oil type oil deposit of steam itself, is utilized Heating power mutually melts the asphalitine separated out in oil reservoir, reduces viscosity of crude.This method be directly used in thick oil type oil deposit exist it is following Defect：One is seriously restricted by reservoir geology complicated condition, and injection steam is difficult big；Two be can be to oil reservoir for those high temperature The serious thick oil type oil deposit of dysgenic thick oil type oil deposit i.e. thermal sensitivity is produced to be difficult to largely use high temperature and high pressure steam；Three are Whole thick oil type oil deposit temperature and crude oil temperature must be kept to be significantly larger than the asphalitine of crude oil always in whole oil recovery process Phase Precipitation Temperature, is that this will not only consume a large amount of steam, and because oil reservoir thermal capacitance is very big, radiation loss is serious and can not keep away Exempt from, reservoir temperature hardly results in guarantee；Four be steaming process complex process, and the control of vapor (steam) temperature, mass dryness fraction and reservoir temperature is difficult； Five be this method require steam temperature the higher the better, vapor (steam) temperature is higher, and corresponding expense is lower, and the steam less than 200 DEG C is not Only cost is high and effect is poor, and vapor (steam) temperature Gao Zehui causes common well wellbore to expand with heat and contract with cold phenomenon seriously, can be to general Logical oil well casing programme causes very big destruction, and pilot production proves to be difficult to be directly used in more than 200 DEG C of high-temperature steam commonly Oil well；Six be in order to solve produce steam when water scale problems, it is necessary to produce steam water specially softened, cause steaming Vapour producing cost is significantly increased；Seven be steam generation need consume mass energy and it is necessary to use special thermal recovery oil well Structure design, can cause the oil well construction expense such as oilwell drilling, well cementation, completion to be multiplied, so as to cause cost for oil production significantly Rise, energy consumption is significantly increased.Therefore, although this method has obtained large-scale application, one during thick oil type oil deposit is exploited at home Directly actively seeking alternative.
Open source information shows：The quiet 35 pieces of east in Liaohe Oil Field belong to thick oil type oil deposit, and the pilot production of the block is proved：Should More than 200 DEG C of high-temperature steam is injected in the common oil well applications steam normal direction oil well of block, well mouth of oil well expansion liter can be caused It is high 1-2 meters, irreversible very big destruction can be caused to oil well casing, well cementation section, serious meeting causes sleeve pipe gross distortion, oil well Scrap, it is impossible in the block popularization and application.
Shaft bottom electromagnetic method, oil reservoir electrothermal way are to convert electrical energy into heat energy, using energy heats oil reservoir, using heating power by oil The asphalitine separated out in layer mutually melts, and reduces viscosity of crude.Because this method needs to consume a large amount of electric energy, it is difficult to ensure that oil reservoir temperature Degree, it is necessary to complicated supporting technology, is implemented higher than asphalitine phase fusion temperature, management difficulty is big, with high costs, input-output ratio It is low, therefore the country typically uses this method as shaft bottom breaking block treatment, it is difficult to directly that it is extensive for thick oil type oil deposit Exploitation, domestic there is presently no successful application example.
Open source information shows：The quiet 35 pieces of east in Liaohe Oil Field belong to thick oil type oil deposit, and the pilot production of the block is proved：Well The block reservoir temperature can not be effectively ensured higher than asphalitine phase fusion temperature in bottom electromagnetic method, oil reservoir electrothermal way, it is impossible to effectively molten Change the asphalitine phase in its oil reservoir, it is impossible to effectively solve asphalitine of the crude oil in oil reservoir and mutually separate out problem, it is impossible in the block Popularization and application.
Ripple method is to convert electrical energy into acoustic energy or microwave, and oil reservoir is handled using its characteristic, solves drip of the crude oil in oil reservoir Blue or green matter mutually separates out problem.Because this method needs to consume a large amount of electric energy the supporting technology, it is necessary to complicated, implementation, management difficulty are big, It is domestic there is presently no successfully carrying out field test in thick oil type oil deposit, and because its is with high costs, input-output ratio is low, domestic mesh Preceding is difficult directly to use it for thick oil type oil deposit exploitation.
Open source information shows：The quiet 35 pieces of east in Liaohe Oil Field belong to thick oil type oil deposit, and the pilot production of the block is proved：Ripple Method can not can not effectively solve asphalitine of the crude oil in oil reservoir and mutually separate out problem, it is impossible in the block popularization and application.
Artificial earthquake method is that other energy are converted into seismic input wave oil reservoir, and oil reservoir is handled using its characteristic, is solved former Asphalitine of the oil in oil reservoir mutually separates out problem.Mutually separated out because this method can not effectively solve asphalitine of the crude oil in oil reservoir Problem, it is domestic there is presently no successfully carrying out field test in thick oil type oil deposit, and because its is with high costs, input-output ratio is low, Domestic is difficult directly to use it for thick oil type oil deposit exploitation at present.
Open source information shows：The quiet 35 pieces of east in Liaohe Oil Field belong to thick oil type oil deposit, and the pilot production of the block is proved：People Work seismic wave method can not effectively solve asphalitine of the crude oil in oil reservoir and mutually separate out problem, it is impossible in the block popularization and application.
Splitting Method is a kind of conventional oil recovery technique, is to be come out oil extraction by transforming oil reservoir.Because the method can not have Effect solves asphalitine of the crude oil in oil reservoir and mutually separates out problem, can only be used as supporting technology, it is domestic there is presently no with its Individually carry out the successful precedent of thick oil type oil deposit exploitation.
Emulsion process is such as the 1st printing July the 1st edition in 2000 of publishing house of University of Petroleum《Oilfield chemistry》Page 175 falls Described in several 3-4 rows：" this method is, to underground, highly viscous viscous crude is changed into low viscosity by aqueous surfactant solution note Oil-in-water emulsion extraction "；This method is directly used in thick oil type oil deposit and there is following defect：
If 1) only added in pit shaft and be added without in oil reservoir by aqueous surfactant solution with this method, this method can only Solve the problems, such as well wellbore, it is impossible to which the asphalitine for solving thick oil type oil deposit oil reservoir Crude Oil mutually separates out problem, therefore can not be effective Solve asphalitine and mutually separate out caused oil reservoir Seepage problems；
If 2) aqueous surfactant solution is added in oil reservoir with this method, because aqueous surfactant solution can not have Asphalitine phase in effect fusing oil reservoir, this method can not effectively solve asphalitine of the crude oil in oil reservoir and mutually separate out problem, therefore Asphalitine can not effectively be solved and mutually separate out caused oil reservoir Seepage problems.
Therefore, this method can not individually solve heavy crude reservoir mining problem, and domestic there is presently no successfully individually entered with it The precedent of row thick oil type oil deposit exploitation.
Water flood is a kind of conventional oil recovery technique, is to improve formation pressure energy using normal-temperature water or less than 100 DEG C of hot water Amount, the mother oil displacement in oil reservoir is come out.This method is directly used in thick oil type oil deposit and there is following defect：
1) maximum temperature of the water used in this method on ground is no more than 100 DEG C, when entering oil reservoir because ground, pit shaft dissipate Heat loss highest water temperature is already below 100 DEG C；Because the porosity in oil reservoir is difficult that, more than 30%, and it is one that asphalitine, which mutually melts, Individual endothermic process, can further reduce water temperature；Relevant calculating shows：The hot water enters after oil reservoir it is difficult to ensure that reservoir temperature is higher than Asphalitine phase fusion temperature, it is impossible to the asphalitine phase effectively in fusing oil reservoir.
2) water used in this method does not reduce the function of crude oil asphaltenes phase Precipitation Temperature, when its temperature in oil reservoir During less than crude oil asphaltenes phase Precipitation Temperature, it is impossible to suppress asphalitine and mutually grow up, block oil reservoir hole pore throat；If on the contrary, entered The water temperature for entering oil reservoir is less than the asphalitine phase Precipitation Temperature of oil reservoir Crude Oil, can be further exacerbated by crude oil asphaltenes and mutually separate out to ask Topic.
Therefore, although this method large-scale application in common oil reservoir, this method can not effectively solve thick oil type The asphalitine of reservoir oil layer Crude Oil mutually separates out problem, therefore alternative is actively being sought always at present by the country.
By taking the quiet 35 blocks of east oil reservoirs in Liaohe Oil Field as an example.
Open source information shows：Quiet 35 pieces of eastern oils, the 50 DEG C of viscosity in Liaohe Oil Field are 300~360mPa.s, paraffin content 24%, containing gum asphalt 38~41%, 55 DEG C of dewaxing temperature, 37 DEG C of freezing point belongs to high pour-point heavy oil reservoir；Laboratory test table It is bright：Its asphalitine phase Precipitation Temperature is 58 DEG C, higher than 4 DEG C of its dewaxing temperature；It surveys drive a well 39.87 DEG C of temperature, closing well 34 days 43.27 DEG C of reservoir temperature.
Theoretical calculation shows：According to the ton hour of flow 5, with common water flooding regime water filling, the hot water that 100 DEG C of ground is reached About 97 DEG C of the temperature of well head, reaches about 80 DEG C of the temperature in shaft bottom；
If 80 DEG C of hot water enter east oil reservoir, highest can improve 4 DEG C of reservoir temperature, reservoir temperature is carried by 39.87 DEG C It is up to 44.87 DEG C, lower 13.13 DEG C than its asphalitine phase Precipitation Temperature, therefore the hot water can not possibly improve reservoir temperature to drip Blue or green matter phase fusion temperature, even if not considering that asphalitine mutually melts heat absorption problem, 80 DEG C of hot water effectively can not be melted in oil reservoir Asphalitine phase, can not effectively suppress asphalitine and mutually continue to grow up, block oil reservoir hole pore throat；
The pilot production of the block is proved：Block east can not effectively be solved using 90 DEG C of water flood of surface well saliva temperature Asphalitine of portion's Reservoir Crude Oil in oil reservoir mutually separates out problem, it is impossible in the block east oil reservoir popularization and application this method.
In a word, resultant effect of the above method in heavy crude producing type oil reservoir is not ideal.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of exploitation method of thick oil type oil deposit, the recovery method can be effective Solve asphalitine of the crude oil in oil reservoir and mutually separate out problem, can effective heavy crude producing type oil reservoir, thick oil type oil deposit is greatly reduced Cost of winning, extends the oil well production cycle, increases oil well output, improves oil reservoir ultimate recovery, and implements easy, safely may be used Lean on, remarkable in economical benefits.
" viscous crude " in the present invention refers to：Such as the 1st printing July the 1st edition in 2000 of publishing house of University of Petroleum《Oil field Learn》" viscous crude refers to that the viscosity of the degassed crude under reservoir temperature exceedes 100mPa.s crude oil " described in the 12nd row of page 175.
" thick oil type oil deposit " in the present invention refers to：The crude oil contained is the oil reservoir of viscous crude.
" asphalitine phase " in the present invention refers to：Such as the 1st printing July the 1st edition in 2000 of publishing house of University of Petroleum《Oil Field chemistry》" relative molecular weight of asphalitine is higher by (1.5 × 10 described in the 3-5 rows of page 1713~5 × 103), it is entering for colloid One step condensation product, insoluble in oil, the major part in molecule may be stacked on together in the form of sheets, from into a phase (asphalitine phase) "； Laboratory experiment shows：Asphalitine is mutually water insoluble.
" seepage flow " in the present invention refers to：Stream of the fluid (such as crude oil, oil water mixture, gas) in oil reservoir (oil reservoir) Dynamic process, can refer to flowing of the fluid in oil reservoir sand grains gap (hole) or refer to fluid in oil reservoir rock seam (seam Gap) in flowing.
" freezing point " in the present invention refers to：Under prescribed conditions, the temperature that crude oil loses flowability, belongs to the thing of crude oil One of property parameter, also known as setting temperature, abbreviation condensation point.
" asphalitine phase fusion temperature " in the present invention refers to：Under prescribed conditions, the asphalitine in viscous crude mutually melts completely The temperature changed, disappeared.
" asphalitine phase Precipitation Temperature " in the present invention refers to：Under prescribed conditions, asphalitine is formed or produced in viscous crude The temperature of phase；Or refer to：If viscous crude temperature occur reduce again 2 DEG C, viscosity of thickened oil increase by more than 10% phenomenon, should Viscous crude temperature is set to " asphalitine phase Precipitation Temperature "；From fluid mechanics knowledge：Asphalitine phase physical dimension (and/or geometry Volume) increase can dramatically increase the viscosity of viscous crude, asphalitine phase physical dimension (and/or geometric volume) increasing degree is got over Greatly, the viscosity of thickened oil amplification being induced by it is also bigger.
" original temperature " in the present invention refers to：Prime stratum temperature inside oil reservoir before (also known as oil reservoir) exploitation, oil recovery, Belong to one of physical data of oil reservoir.
" observed temperature " in the present invention refers to：Oil near the oil well shaft bottom obtained or/and shaft bottom is measured with existing method The temperature of layer.
" hot fluid " in the present invention refers to：Temperature mixes for 30~200 DEG C of hot water, water vapour or hot water and steam Thing；Described hot water can be the mixing that clear water or oilfield sewage or clear water, oilfield sewage are arbitrarily mixed Thing.
" oilfield sewage " in the present invention refers to：From oil reservoir, oil reservoir, oil well oil-polluted water, can be by dirt The treated oil-polluted water of water process measure or the oil-polluted water directly isolated from well product；Can be same The mixing oil-polluted water of the oil-polluted water of one oil reservoir or different oil reservoirs.
" adverse chemical reaction " in the present invention：It is the chemical reaction for referring to occur in the solution anions and canons combination (association reaction, PAMC and anion between such as cationic surfactant and anion surfactant Combination or cross-linking reaction between the metal ions such as association reaction, PAMA and iron aluminium between polyacrylamide Etc.)；Also precipitation, the chemical reaction of gas can be produced by referring to；Also refer to and react violent and reaction speed, the unmanageable chemistry of temperature rise Reaction；Also refer to decompose the high molecular chemical reaction of organic synthesis (as between peroxide and high molecular surfactant Chain rupture decomposition reaction between chain rupture decomposition reaction, hydrogen peroxide and polyacrylamide etc.).
" liquid " refers in the present invention：The fluid being in a liquid state, can refer to the aqueous solution, organic solution, the breast being in a liquid state Change liquid, suspension or refer to the fluid or melt liquid of molten condition.
" foaming agent " in the present invention refers to：Water soluble anionic surfactant, water-soluble cationic surfactant, Any one of nonionic surfactant, biosurfactant are any either between them, and two or more is any Ratio is mixed and mixture or mixing liquid without bad chemical reaction.
" oil well " in the present invention：Also known as production well or producing well, refer to for producing crude oil or crude oil, natural gas Well；Existing oil well can be referred to or refer to newly-built oil well or refer to for producing crude oil or crude oil, it is natural " water injection well " of gas, not including can only produce natural gas and water, a small amount of liquid light hydrocarbon gas well；It can refer to using existing common The oil well of completion mode completion or the oil well for referring to the existing thermal recovery completion mode completion of utilization；Generally refer to sleeve pipe and oil The complete oil well of pipe, the sometimes referred to as only oil well of sleeve pipe；Open source information and oil field at home actual production show：In the present invention " oil well " can need to be converted to " water injection well " (oilfield enterprise is commonly called as metaideophone) in the present invention according to specific production of recovering the oil, and also may be used To be converted by " water injection well " in the present invention, and mutual conversion between such " oil well ", " water injection well " is production of recovering the oil In recurrent thing.
" water injection well " in the present invention：Abbreviation well, refers to for the water filling into oil reservoir (oil reservoir) and/or notes other streams again The well of body；Can be identical with " oil well " structure in the present invention, can also be different, there can be complete oil pipe and sleeve pipe, also may be used There was only sleeve pipe, sometimes referred to as the water filling into oil reservoir (oil reservoir) and/or the oil wells of other fluids is noted；Open source information and the country Oil field actual production shows：" water injection well " can directly be built up, and can also be needed according to production of recovering the oil in the present invention " oil well " is converted (oilfield enterprise is commonly called as metaideophone), and such metaideophone is recurrent thing in oil recovery production；Domestic oil Field actual production shows：" water injection well " in the present invention can also need to be converted to " the oil in the present invention according to production of recovering the oil Well ", and such conversion is also recurrent thing in oil recovery production.
" tubing string " in the present invention refers to：Oil pipe, sucker rod, pump, downhole tool outside oil well decannulation etc..
" chemical agent " in the present invention refers to：Methyl naphthalene, thinner, pour-point depressant, oil displacement agent, methyl naphthalene liquid, special type have Any one or any two or more arbitrary proportion mixing of machine liquid, special fluid, extraordinary melt liquid and invariably The mixture of good chemical reaction.
" chemical agent " should possess following whole essential characteristics in the present invention：
1) heavy oil asphalt matter phase Precipitation Temperature can be reduced by more than 1 DEG C, or can dissolve at normal temperatures and pressures (or it is molten Solution) commodity pitch or commodity road asphalt；
2) it is liquid or less than 200 DEG C under normal temperature and pressure in liquid condition, or liquid can be made below 200 DEG C；
3) the countries concerned's standard, professional standard, enterprise's mark are met in " thick oil type oil deposit " of the present invention exploitation application The regulation of standard, requirement.
Open source information shows：Gasoline, benzene, carbon tetrachloride, carbon disulfide can dissolve (or dissolving) business at normal temperatures and pressures Product pitch or commodity road asphalt, but in " thick oil type oil deposit " of the present invention exploitation application, violating the countries concerned Standard, professional standard, the regulation of company standard, requirement, do not possess the whole spy substantially that " chemical agent " in the present invention should possess Levy, therefore be not belonging to " chemical agent " in the present invention.
Experiment shows：The simple substance or mixed of (or dissolving) commodity pitch or commodity road asphalt can be dissolved at normal temperatures and pressures Compound, can effectively reduce heavy oil asphalt matter phase Precipitation Temperature more than 1 DEG C.
Experiment shows：20% methyl naphthalene and thinner, pour-point depressant, oil displacement agent, methyl naphthalene liquid, extraordinary organic liquid, Any one or any two or more arbitrary proportion mixing of special fluid, extraordinary melt liquid and it is anti-without adverse chemical After the mixture mixing answered, heavy oil asphalt matter phase Precipitation Temperature can be effectively reduced by more than 1 DEG C.
" methyl naphthalene " is any one in 1- methyl naphthalenes, 2- methyl naphthalenes, mixed methylnaphthalene or any two in the present invention Or the mixture of two or more arbitrary proportions.
The essential characteristic of " 1- methyl naphthalenes " is in the present invention：Open source information shows that " 1- methyl naphthalenes " is also known as in the present invention Alpha-methyl-naphthalene, molecular formula C11H10, it is in a liquid state under normal temperature and pressure, -22 DEG C of fusing point is water insoluble, is dissolved in the majorities such as ethanol, ether Organic solvent；Laboratory test shows, is dissolved each other under its normal temperature and pressure with " mixed methylnaphthalene ", can dissolve 2- methyl naphthalenes, with 2- methyl Naphthalene, " mixed methylnaphthalene ", crude oil do not produce chemical reaction；Laboratory test shows that it can be dissolved in crude oil, energy under normal temperature and pressure Enough dissolve (or dissolving) commodity pitch or commodity road asphalt；Belong to commodity, can purchase from the market；
The essential characteristic of " mixed methylnaphthalene " is in the present invention：" mixed methylnaphthalene " generally abbreviation (being commonly called as) first in the present invention Base naphthalene, is the organic mixture based on 2- methyl naphthalenes, 1- methyl naphthalenes, its 2- methyl naphthalene, 1- methyl naphthalene content and specific commodity Model is relevant；It is oily liquids under normal temperature and pressure, it is water insoluble, it is dissolved in ethanol, ether；The country is currently without formulation Uniform Product Standard, its product type, quality index etc. with the company standard of each manufacturing enterprise is different and different, the 2- first of general merchandise Base naphthalene, 1- methyl naphthalene Zong Han Liang≤50%, fusing point are less than -5 DEG C；Laboratory test shows, under " mixed methylnaphthalene " normal temperature and pressure with 1- methyl naphthalenes are dissolved each other, and can dissolve 2- methyl naphthalenes, and chemical reaction is not produced with 2- methyl naphthalenes, 1- methyl naphthalenes, crude oil；Laboratory test table Bright, " mixed methylnaphthalene " can be dissolved in crude oil, and (or dissolving) commodity pitch or the drip of commodity road can be dissolved under normal temperature and pressure It is blue or green；Belong to commodity, and marque is numerous, can purchase from the market；
The essential characteristic of " 2- methyl naphthalenes " is in the present invention：Open source information shows that " 2- methyl naphthalenes " is also known as in the present invention Beta-methylnaphthalene, molecular formula C11H10；It is white under normal temperature and pressure to light yellow monoclinic crystal or molten solid, 34.6 DEG C of fusing point； It is water insoluble, it is dissolved in most organic solvents such as ethanol, ether；Laboratory test shows, can be dissolved under its normal temperature and pressure 1- methyl naphthalenes, " mixed methylnaphthalene ", can be dissolved in pyrogen oil of the temperature more than its fusing point, not produced with 1- methyl naphthalenes, " mixed methylnaphthalene ", crude oil Chemical reaction；Belong to commodity, can purchase from the market.
" thinner " in the present invention：It is to refer to reduce the chemical agent of viscosity of crude, it is times in following substances Meaning it is a kind of or between them two or more any arbitrary proportion mixture and without the mixture of bad chemical reaction：
1) using methyl naphthalene liquid as the oil-soluble viscosity reducer of principle active component, such as with methyl naphthalene, fusel oil mixing liquid For the oil-soluble viscosity reducer of principle active component, viscosity of crude can be reduced using dissolved dilution principle；
By the 1st printing July the 1st edition in 2000 of publishing house of University of Petroleum《Oilfield chemistry》The 11-12 rows institute of page 173 State and understand：Alcohol, alcohol ether can dissolve asphalitine；And by this《Oilfield chemistry》Understood described in the 13-14 rows of page 175：Asphalitine Content is higher, and oily viscosity is higher；From open source information：Fusel oil main component is isoamyl alcohol, butanol, propyl alcohol and heptan Alcohol；Therefore, fusel oil can dissolve asphalitine, can reduce viscosity of crude；Due to asphalitine phase Precipitation Temperature and viscosity have because Fruit relation, therefore fusel oil can reduce crude oil asphaltenes phase Precipitation Temperature.
Experiment shows：Methyl naphthalene can dissolve (or dissolving) commodity pitch or commodity road asphalt, can effectively reduce state Interior major crude oil viscosity.
2) it is main such as using water soluble anionic surfactant using surfactant as the thinner of principle active component The water-soluble thinner liquid of active ingredient, can reduce viscosity of crude using reducing viscosity by emulsifying principle；
Such as the 1st printing July the 1st edition in 2000 of publishing house of University of Petroleum《Oilfield chemistry》The inverse 3-4 rows of page 175 It is described：" Emulsifying heavy crude producing can be used.This method is, to underground, to make aqueous surfactant solution note highly viscous Viscous crude is changed into the oil-in-water emulsion extraction of low viscosity "；
3) using extraordinary organic liquid as the oil-soluble viscosity reducer of principle active component；Such as n-butyl ether, dimethylbenzene, ethylene glycol fourth Ether, can reduce viscosity of crude using dissolved dilution principle.
Because butyl glycol ether belongs to one kind of alcohol ether, therefore, it is possible to dissolve asphalitine, viscosity of crude can be reduced.
Experiment shows：N-butyl ether, dimethylbenzene can dissolve (or dissolving) commodity pitch or commodity road asphalt, can be effective Reduce domestic major crude oil viscosity.
" thinner " should possess following whole essential characteristics in the present invention：
1) heavy oil asphalt matter phase Precipitation Temperature can be reduced by more than 1 DEG C, or can dissolve at normal temperatures and pressures (or it is molten Solution) commodity pitch or commodity road asphalt；
2) it is liquid or less than 200 DEG C under normal temperature and pressure in liquid condition, or liquid can be made below 200 DEG C；
3) the countries concerned's standard, professional standard, enterprise's mark are met in " thick oil type oil deposit " of the present invention exploitation application The regulation of standard, requirement.
Experiment shows：Existing thinner is added in the quiet 35 pieces of east oil well crude oils in Liaohe Oil Field, this can be effectively reduced More than 1 DEG C of crude oil asphaltenes phase Precipitation Temperature.
" pour-point depressant " in the present invention：It is to refer to reduce the chemical agent of crude oil freezing point.
" pour-point depressant " in the present invention should possess following whole essential characteristics：
1) heavy oil asphalt matter phase Precipitation Temperature can be reduced by more than 1 DEG C, or can dissolve at normal temperatures and pressures (or it is molten Solution) commodity pitch or commodity road asphalt；
2) it is liquid or less than 200 DEG C under normal temperature and pressure in liquid condition, or liquid can be made below 200 DEG C；
3) the countries concerned's standard, professional standard, enterprise's mark are met in " thick oil type oil deposit " of the present invention exploitation application The regulation of standard, requirement.
Experiment shows：Existing pour-point depressant is added in the quiet 35 pieces of east oil well crude oils in Liaohe Oil Field, this can be effectively reduced More than 1 DEG C of crude oil asphaltenes phase Precipitation Temperature.
Further, pour-point depressant of the invention be any one in following substances either between them any two kinds or Two or more arbitrary proportion mixtures and without the mixture of bad chemical reaction：
1) the oil-soluble pour-point depressant by principle active component of methyl naphthalene liquid, such as with methyl naphthalene, fusel oil mixing liquid For the oil-soluble pour-point depressant of principle active component, it can reduce crude oil asphaltenes by eutectic, distortion nucleus, dissolution mechanism and mutually analyse Go out temperature.
By the 1st printing July the 1st edition in 2000 of publishing house of University of Petroleum《Oilfield chemistry》Described in the 6-7 rows of page 167 Understand：Polycyclic aromatic hydrocarbon can be eutectic by participating in composition nucleus, so that nucleus is distorted, be unfavorable for wax it is brilliant continue grow up； By this《Oilfield chemistry》The row of inverse the 1st of page 166 is understood：Methyl naphthalene belongs to polycyclic aromatic hydrocarbon；And by this《Oilfield chemistry》171st " relative molecular weight of asphalitine is higher by (1.5 × 10 described in page 3-5 rows3~5 × 103), it is the further condensation product of colloid, no It is dissolved in major part in oil, molecule in the form of sheets, may be stacked on together, from into a phase (asphalitine phase) " understand, though asphalitine phase The brilliant category of wax is so not belonging to, but with typical layer structure, therefore, it is possible to be contemplated by torsional deformation layer structure suppression It is made to continue to grow up, assemble；Therefore, compare methyl naphthalene effect brilliant to wax and to asphalitine phase layer structure and understand the work of the two It is similar with mechanism；Therefore, it is expected to methyl naphthalene can reduce crude oil asphaltenes phase Precipitation Temperature.
By the 1st printing July the 1st edition in 2000 of publishing house of University of Petroleum《Oilfield chemistry》The 11-12 rows institute of page 173 State and understand：Alcohol, alcohol ether can dissolve asphalitine；And by this《Oilfield chemistry》Understood described in the 13-14 rows of page 175：Asphalitine Content is higher, and oily viscosity is higher；From open source information：Fusel oil main component is isoamyl alcohol, butanol, propyl alcohol and heptan Alcohol；Therefore, fusel oil can dissolve asphalitine, can reduce viscosity of crude；Due to asphalitine phase Precipitation Temperature and have in year because Fruit relation, therefore fusel oil can reduce crude oil asphaltenes phase Precipitation Temperature.
Laboratory test shows：98% methyl naphthalene, 5% fusel oil mixing liquid can dissolve paraffin grade wax and candle, quiet In 35 pieces of east oil well crude oils, the crude oil asphaltenes phase Precipitation Temperature can be effectively reduced by more than 1 DEG C.
2) using surfactant as the pour-point depressant of principle active component or its liquid, such as with sodium alkyl sulfonate, benzene sulfonamide Sour sodium is the water-soluble pour-point depressant liquid of principle active component, can utilize in the absorption of asphalitine phase surface, make asphalitine phase not The mechanism reason reduction crude oil asphaltenes phase Precipitation Temperature preferably grow up, assembled.
By the 1st printing July the 1st edition in 2000 of publishing house of University of Petroleum《Oilfield chemistry》The inverse 6-8 rows of page 255 It is described to understand：" surfactant type pour point depressant for crude oil such as petroleum sulfonate and polyxyethylated ammonium, they are by brilliant in wax The mechanism of adsorption, pour-point depressing process should not be played throughout the network structure of whole system by forming wax "；By China University Of Petroleum Beijing Publishing house's May the 1st edition in 1989, the 4th of in August, 2006 printing《Recover the oil chemistry》Understood described in the 31-33 pages：Alkyl sulfonic acid Sodium, sodium alkyl benzene sulfonate belong to petroleum sodium sulfonate category, therefore, and sodium alkyl sulfonate, sodium alkyl benzene sulfonate belong to pour-point depressant model Farmland；By this《Oilfield chemistry》" relative molecular weight of asphalitine is higher by (1.5 × 10 described in the 3-5 rows of page 1713~5 × 103), It is the further condensation product of colloid, insoluble in oil, the major part in molecule may be stacked on together in the form of sheets, from into a phase (drip Blue or green matter phase) " understand, although asphalitine phase is not belonging to the brilliant category of wax, but with typical layer structure, therefore, it is possible to expected logical Cross the torsional deformation layer structure and suppress it and continue to grow up, assemble；Therefore, comparison surface active agent formulation pour point depressant for crude oil is brilliant to wax Understand that the mechanism of action of the two is similar with the effect to asphalitine phase layer structure；It therefore, it is expected to surfactant Type pour point depressant for crude oil can reduce crude oil asphaltenes phase Precipitation Temperature.
3) the oil-soluble pour-point depressant or its liquid by principle active component of extraordinary organic liquid；As n-butyl ether, dimethylbenzene, Butyl glycol ether or its mixing liquid, can reduce crude oil asphaltenes phase Precipitation Temperature using solution principle.
By the 1st printing July the 1st edition in 2000 of publishing house of University of Petroleum《Oilfield chemistry》The 11-12 rows institute of page 173 State and understand：Alcohol, alcohol ether can dissolve asphalitine；Therefore, alcohol, alcohol ether can mutually be separated out using solution principle reduction crude oil asphaltenes Temperature.
Experiment shows：N-butyl ether, dimethylbenzene, butyl glycol ether any one or its mixing liquid can dissolve (or molten Solution) commodity pitch or commodity road asphalt, in quiet 35 pieces of east oil well crude oils adding 10% can effectively reduce its pitch More than 1 DEG C of matter phase Precipitation Temperature.
" oil displacement agent " in the present invention：It is the change for referring to improve oil recovery factor, the crude oil in oil reservoir is driven to oil well Learn medicament.
" oil displacement agent " in the present invention should possess following whole essential characteristics：
1) heavy oil asphalt matter phase Precipitation Temperature can be reduced by more than 1 DEG C, or can dissolve at normal temperatures and pressures (or it is molten Solution) commodity pitch or commodity road asphalt；
2) it is liquid or less than 200 DEG C under normal temperature and pressure in liquid condition, or liquid can be made below 200 DEG C；
3) the countries concerned's standard, professional standard, enterprise's mark are met in " thick oil type oil deposit " of the present invention exploitation application The regulation of standard, requirement.
Further, the oil displacement agent is any one in following substances any two kinds or two kinds either between them Any of the above ratio mixture and without the mixture of bad chemical reaction：
1) using sulfonate surfactant as the oil displacement agent of principle active component, such as with sodium alkyl sulfonate, benzene sulfonamide Sour sodium, petroleum sodium sulfonate, alkyl toluene sulfonic acids sodium are the oil displacement agent liquid of principle active component.
2) using carboxylate surfactant as the oil displacement agent of principle active component, such as with soap, petroleum carboxylate For the oil displacement agent liquid of principle active component.
3) using polyether surfactant as the oil displacement agent of principle active component, such as with peregal type surfactant, OP Type surfactant, tween (Tween) type surfactant are the oil displacement agent of principle active component.
4) using nonionic-anionic amphoteric surfactant as the oil displacement agent of principle active component, such as with polyoxyethylene Polyoxypropylene alkyl alcohol ether sulphonate, polyoxyethylene polyoxypropylene alkyl alcohol ether carboxylate, polyoxyethylene polyoxypropylene alkylol Ether sulfuric ester salt, polyoxyethylene polyoxypropylene alkyl alcohol ether phosphate ester salt are the oil displacement agent liquid of principle active component.
5) using cationic surface active agent as the oil displacement agent of principle active component, such as with chlorination dodecylbenzyl diformazan Base ammonium, dodecyltrimethyl, chlorination dodecyl ammonium are the oil displacement agent liquid of principle active component.
6) using nonionic-cationic amphoteric surfactant as the oil displacement agent of principle active component, such as with alkyl-dimethyl Ammonium acetic acid inner salt, alkyl ammonium group propionic acid inner salt are the oil displacement agent liquid of principle active component.
By the 1st printing July the 1st edition in 2000 of publishing house of University of Petroleum《Oilfield chemistry》Can described in the 109-110 pages Know：Sulfonate surfactant, carboxylate surfactant, polyether surfactant, nonionic-anionic both sexes Surfactant belongs to oil displacement agent category；Although cationic surface active agent, nonionic-cationic amphoteric surfactant The defect of loss is adsorbed in the presence of on stratum, but still belongs to oil displacement agent category.
Experiment shows：Mutually analysed can effectively reduce its asphalitine in the quiet 35 pieces of east oil well crude oils of existing oil displacement agent addition Go out temperature more than 1 DEG C.
" methyl naphthalene liquid " in the present invention：Refer to the liquid containing methyl naphthalene.
" methyl naphthalene liquid " should possess following whole essential characteristics in the present invention：
1) heavy oil asphalt matter phase Precipitation Temperature can be reduced by more than 1 DEG C, or can dissolve at normal temperatures and pressures (or it is molten Solution) commodity pitch or commodity road asphalt；
2) it is liquid or less than 100 DEG C under normal temperature and pressure in liquid condition, or liquid can be made below 100 DEG C；
3) the countries concerned's standard, professional standard, enterprise are met in " thick oil type oil deposit " of the present invention exploitation application The regulation of standard, requirement.
Further, the methyl naphthalene liquid be any one in following liquid either between them any two kinds or Two or more arbitrary proportion mixtures and without the mixture of bad chemical reaction：
1) methyl naphthalene, fusel oil mixing liquid；
2) methyl naphthalene, organic solvent mixing liquid；
3) methyl naphthalene emulsion, suspension；
4) less than the 50 DEG C methyl naphthalene liquid that are in a liquid state；
5) less than the 100 DEG C methyl naphthalenes that are in a liquid state and polycyclic aromatic hydrocarbon mixing liquid；
6) less than the 100 DEG C methyl naphthalenes that are in a liquid state and polycyclic aromatic hydrocarbon derivative mixing liquid；
7) less than the 100 DEG C methyl naphthalenes that are in a liquid state and biphenyl mixing liquid；
8) less than 50 DEG C methyl naphthalenes and crude oil mixed liquor body that are in a liquid state；
9) methyl naphthalene and liquid petroleum resin mixing liquid；
10) less than the 100 DEG C methyl naphthalenes that are in a liquid state and Petropols mixing liquid；
11) methyl naphthalene and organic liquid mixing liquid；
Open source information shows：Commodity coal tar on domestic market contains methyl naphthalene, organic solvent, belongs to containing methyl naphthalene Liquid, heavy oil asphalt matter phase Precipitation Temperature can be reduced by more than 1 DEG C, the drip of (or dissolving) commodity can be dissolved at normal temperatures and pressures Blue or green or commodity road asphalt, the function with methyl naphthalene liquid；But if coal tar is used for into " thick oil type oil of the present invention Hide " exploit in application, the countries concerned's standard, professional standard, the regulation of company standard, requirement are violated, is not possessed in the present invention " methyl naphthalene liquid " the whole essential characteristics that should possess, therefore be not belonging to " methyl naphthalene liquid " in the present invention.
Experiment shows：The mixing liquid of 95% methyl naphthalene and 5% fusel oil can effectively reduce the quiet 35 pieces of east in Liaohe Oil Field More than 1 DEG C of portion's oil well crude oil asphalitine phase Precipitation Temperature.
Experiment shows：Under normal temperature, mixed methylnaphthalene can be with fusel oil or organic solvent or liquid petroleum resin or crude oil It is miscible with arbitrary proportion；90% mixed methylnaphthalene can dissolve 10% naphthalene or dimethylnaphthalene or biphenyl or Petropols；Mix first Base naphthalene can with pyridine, the heterocycle organic liquid arbitrary proportion such as quinoline, furans it is miscible.
" fusel oil " essential characteristic in the present invention is：Byproduct fusel oil from fermentation method preparing alcohol, the life of alcohol method Produce the mixture of any one arbitrary proportion mixture either between them in the accessory substance fusel oil of butadiene, normal temperature and pressure Under be in a liquid state；Experiment shows that it dissolves each other with 1- methyl naphthalenes, mixed methylnaphthalene, is dissolved in crude oil, can dissolve 2- methyl naphthalenes；Normal temperature is normal Pressure does not produce chemical reaction with 1- methyl naphthalenes, 2- methyl naphthalenes, mixed methylnaphthalene, crude oil；Belong to commodity, can adopt from the market Purchase.
" extraordinary organic liquid " in the present invention：Refer to the organic matter being in a liquid state under normal temperature.
" extraordinary organic liquid " should possess following whole essential characteristics in the present invention：
1) heavy oil asphalt matter phase Precipitation Temperature can be reduced by more than 1 DEG C, or can dissolve at normal temperatures and pressures (or it is molten Solution) commodity pitch or commodity road asphalt；
2) it is liquid or less than 100 DEG C under normal temperature and pressure in liquid condition, or liquid can be made below 100 DEG C；
3) the countries concerned's standard, professional standard, enterprise are met in " thick oil type oil deposit " of the present invention exploitation application The regulation of standard, requirement.
Open source information shows：Gasoline, benzene, carbon tetrachloride, carbon disulfide belong to the organic matter being in a liquid state under normal temperature, can (or dissolving) commodity pitch or commodity road asphalt, the function with extraordinary organic liquid are dissolved at normal temperatures and pressures；But if Use it in " thick oil type oil deposit " of the present invention exploitation application, violate the countries concerned's standard, professional standard, enterprise's mark The regulation of standard, requirement, do not possess whole essential characteristics that " extraordinary organic liquid " in the present invention should possess, therefore be not belonging to this " extraordinary organic liquid " in invention.
Further, extraordinary organic liquid be following liquid any one either between them two or more Arbitrary proportion mixture and without the mixture of bad chemical reaction：
1) alcohol-based liquid, such as methanol, isobutanol, octanol liquid；
2) diol, derivatives liquid, such as butyl glycol ether, butyl, diethylene glycol ether liquid；
3) ethers liquid, such as n-butyl ether, isobutyl ether, octyl ether liquid；
4) ester liquid, such as hexyl acetate, phenylacetate, methyl benzoate liquid；
5) ketone liquid, such as 3- heptanone, methyln-hexyl ketone, cyclopentanone liquid；
6) aromatic hydrocarbons class I liquid I, such as dimethylbenzene, trimethylbenzene, ethylbenzene liquid；
7) heavy aromatics liquid, such as mixes heavy benzene, carbon nine, the liquid of carbon ten；
8) aromatic hydrocarbons or arene derivatives content are more than 5% liquid petroleum product liquid, such as diesel oil, plastic cracking oil, rubber The liquid such as glue cracked oil；
9) olefin liquid, such as 14-alkene, 12-alkene, cyclopentadiene, dicyclopentadiene, aromatic olefin, styrene, methylbenzene The liquid such as ethene, p-methylstyrene；
10) solvent naphtha liquid, such as alkane solvent oil, aromatic solvent naphtha, alkene solvent oil liquid；
11) the bottom residue of Petropols liquid byproduct, such as Petropols production technology formation；
12) under normal temperature be liquid Petropols liquid；
13) fusel iol liquid；
14) less than the 100 DEG C hydro carbons autopolymer liquid that are in a liquid state；
15) less than the 50 DEG C methyl naphthalene melt liquids that are in a liquid state；
16) 50 DEG C of viscosity are less than 60mPa.s crude oil；
17) chlorine element, the organic liquid of element sulphur, such as pyridine, quinoline, furans heterocycle organic liquor are free of in molecular formula Body；
18) less than the 100 DEG C Petropols liquid that are in a liquid state；
19) less than 100 DEG C be in a liquid state bio-oil, cracking bio-oil liquid, such as soya-bean oil, cracking animal oil, biology Diesel oil etc.；
Open source information shows：Alcohol, diol, derivatives can dissolve asphalitine.
Experiment shows：Butyl is added in the quiet 35 pieces of east oil well crude oils in Liaohe Oil Field, can effectively be reduced More than 1 DEG C of the crude oil asphaltenes phase Precipitation Temperature.
Experiment shows：Crude oil by 50 DEG C of viscosity less than 60mPa.s is added in the quiet 35 pieces of east oil well crude oils in Liaohe Oil Field, The crude oil asphaltenes phase Precipitation Temperature can effectively be reduced by more than 1 DEG C.
" special fluid " in the present invention：Refer to following liquid any one either between them two kinds or two kinds with Upper arbitrary proportion mixture and without the mixture of bad chemical reaction：
1) less than the 100 DEG C surfactant liquids that are in a liquid state；
2) less than the 100 DEG C oily molten or water-soluble polymer liquid that are in a liquid state；
3) less than the 100 DEG C polycyclic aromatic hydrocarbon liquids that are in a liquid state；
4) less than the 100 DEG C polycyclic aromatic hydrocarbon derivative liquid that are in a liquid state；
5) the commodity wax-proofing agent being in a liquid state under normal temperature；
6) the commodity oil-base paraffin remover being in a liquid state under normal temperature；
7) the water base paraffin remover of commodity being in a liquid state under normal temperature；
8) less than the 100 DEG C Petropols liquid that are in a liquid state；
" special fluid " should possess following whole essential characteristics in the present invention：
1) heavy oil asphalt matter phase Precipitation Temperature can be reduced by more than 1 DEG C, or can dissolve at normal temperatures and pressures (or it is molten Solution) commodity pitch or commodity road asphalt；
2) it is liquid or less than 100 DEG C under normal temperature and pressure in liquid condition, or liquid can be made below 100 DEG C；
3) the countries concerned's standard, professional standard, enterprise are met in " thick oil type oil deposit " of the present invention exploitation application The regulation of standard, requirement.
Open source information shows：Sodium cetanesulfonate outward appearance is slurry, can be soluble in water under normal temperature, belongs to surface work Property formulation pour point depressant for crude oil category；Polyacrylate is one kind of oil-soluble polymers, dissolved in solvent, belongs to polymer Type pour point depressant for crude oil category；Polycyclic aromatic hydrocarbon, polycyclic aromatic hydrocarbon derivative can be dissolved in solvent, belong to wax-proofing agent category.
Experiment shows：Sodium cetanesulfonate liquid is added in quiet 35 pieces of east oil well crude oils, crude oil analysis can be reduced More than 1 DEG C of wax point.
Experiment shows：Polyacrylate liquid is added in quiet 35 pieces of east oil well crude oils, the crude oil can be effectively reduced More than 1 DEG C of asphalitine phase Precipitation Temperature.
Experiment shows：Commodity wax-proofing agent or water base paraffin remover or oil-base paraffin remover are added into quiet 35 pieces of east oil well crude oils In, it can effectively reduce the crude oil asphaltenes phase Precipitation Temperature more than 1 DEG C.
Laboratory test shows：5% naphthalene is dissolved in the mixing liquid of 95% fusel oil or that 5% dimethylnaphthalene is dissolved in into 95% is miscellaneous The mixing liquid of alcohol oil is added in the quiet 35 pieces of east oil well crude oils in Liaohe Oil Field, can effectively be reduced the crude oil asphaltenes and mutually be separated out More than 1 DEG C of temperature.
" extraordinary melt liquid " in the present invention：Refer to containing polycyclic aromatic hydrocarbon, polycyclic aromatic hydrocarbon derive below 200 DEG C Thing, oily molten or water-soluble polymer, Petropols, surfactant any one or more melt liquid.
The essential characteristic of " extraordinary melt liquid " is in the present invention：Fusing point is less than 200 DEG C.
Further, described extraordinary melt liquid include it is following any one either between them two kinds or two kinds with Upper arbitrary proportion mixture and without the mixture of bad chemical reaction：
1) less than the 200 DEG C polycyclic aromatic hydrocarbon melt liquids that are in a liquid state；
2) less than the 200 DEG C polycyclic aromatic hydrocarbon derivative melt liquids that are in a liquid state；
3) less than the 200 DEG C oily molten or water-soluble polymer melt liquids that are in a liquid state；
4) less than the 200 DEG C surfactant melt liquids that are in a liquid state；
5) less than the 200 DEG C Petropols melt liquids that are in a liquid state；
6) less than the 200 DEG C hydro carbons autopolymer melt liquids that are in a liquid state.
" surfactant " in the present invention：Refer to that those exist with regard to that can substantially reduce the material of surface tension on a small quantity.
The essential characteristic of " surfactant " is in the present invention：With surface-active, surface tension (or interface can be reduced Tension force).
Further, the surfactant is any one in following substances two kinds or two kinds either between them Any of the above ratio mixture and without the mixture of bad chemical reaction：
1) water soluble anionic surfactant, such as：Sodium alkyl sulfonate, sodium alkyl benzene sulfonate, alkyltrimethyl ammonium chloride, Polyethenoxy alkylphenols carboxylic acid sodium salt, polyoxyethylated alkyl alcohol carboxylic acid sodium salt, polyethenoxy alkylphenols sodium sulfonate Salt, polyoxyethylated alkyl alcohol sulfonate sodium, polyoxyethylated alkyl alcohol sulfuric ester sodium salt, polyethenoxy alkylphenols sulfuric acid Ester sodium salt, structural formula are CnF2n+1COONa carboxylic acid sodium form fluorine surfactant, wherein n represents that 4~10 integer, structural formula are C8F17CONH(CH2)5COONa carboxylic acid sodium form fluorine surfactant, structural formula is RfOC6H4COONa carboxylic acid sodium form fluorine surface Activating agent, structural formula are CnF2n+1SO3Na sulfonic acid sodium form fluorine surfactants, wherein n represents 5 or 7 or 9, structural formula is C3F7 (CH2)nSO3Na sulfonic acid sodium form fluorine surfactant, wherein n represents 5 or 7 or 9, structural formula is CnF2n+1C6H4SO3H sulfonic acid Sodium form fluorine surfactant, wherein n represent 5 or 7 or 9, structural formula is C7F15CH2OSO3Na sulfuric ester salt form fluorine surface-active Agent, structural formula are (CF3)2CF2(CH2)6OSO3Na sulfuric ester salt form fluorine surfactant or structural formula is C8F17SO2NH (CH2)3NH(CH2)3NHCH2CH2OSO3Na sulfuric ester salt form fluorine surfactant；
2) water-soluble cationic surfactant, such as：Chlorination dodecylbenzyl Dimethyl Ammonium, chlorination dodecyl front three Base ammonium, chlorination dodecyl ammonium；
3) water soluble nonionic surfactant, such as：Polyoxyethylated alkyl alcohol, polyethenoxy alkylphenols, polyoxy Ethene octyl phenol ether -10, polyoxethylene octylphenyl phenol ether -7, polyoxyethylene polyoxypropylene propylene glycol, sorbitan list Carboxylic acid ester APEO, Span-20；
4) oil-soluble anion surfactant, such as：Oil-soluble petroleum sodium sulfonate, oil-soluble oil carboxylic acid sodium, oil-soluble Mahogany acid potassium or mahogany acid ammonium；
5) oil-soluble nonionic surfactant, such as：F(CF2)m(CH2)nH, wherein m=10 or 12, n=8 or 12 or 14 Or 18 or 24, polyoxyethylene octadecylamine -7, lauroyl ethylene glycol amine, fish oil acyl ethylene glycol amine, polyoxyethylene alkylamide, C10F19O(CH2CH2O)23C100F19Or C3FO(CF—CFO)nAr, wherein n represents 1 or 2, ArRepresent aryl；
6) biosurfactant and its solution, such as：With what bioengineering or biological method were produced there is surface-active to make Biological agent, nutrient solution, the aqueous solution, emulsion, suspension, dry manufactured goods etc.；
7) amphoteric surfactant, such as：Polyoxyethylated alkyl alcohol sulfuric ester sodium salt, polyoxyethylated alkyl alcohol sulfuric ester It is ammonium salt, polyoxyethylated alkyl alcohol organic phosphate disodium salt, two (polyoxyethylated alkyl alcohol) phosphate kalium salts, polyxyethylated Alcohol ether carboxylate sodium salt, polyoxyethylated alkyl alcohol sulfonate sodium, polyethenoxy alkylphenols sulfuric ester sodium salt, polyoxyethylene alkane Alkylphenol ether organic phosphate disodium salt, polyethenoxy alkylphenols carboxylic acid sodium salt, polyethenoxy alkylphenols sulfonate sodium, ammonia Base dithio formate, alkyl-dimethyl glycine inner salt, alkyl amine group propionic acid inner salt, thunder rice side A；
8) high molecular surfactant, such as code name or code name：2020、2040、2060、2070、AE、AES、AEP、AEC、 AESO、APES、APEP、APEC、APESO、SP、BP、GP。
" oily molten or water-soluble polymer " in the present invention：Referring to have on main chain and/or side chain can be common with wax molecule The nonpolar moiety of (eutectic) is crystallized, the polymer for also having the polar portion for distorting wax Jingjing type.
" oily molten or water-soluble polymer " essential characteristic in the present invention is：Heavy oil asphalt matter phase Precipitation Temperature can be reduced More than 1 DEG C；
Further, the oil is molten or water-soluble polymer is alkylphenol formaldehyde resin, polyacrylate, polycarboxylic acids second Alkene ester, ethene and vinyl carboxylate copolymer, ethene and carboxylic acid propylene ester copolymer, ethene and acrylate copolymer, ethene With methacrylate copolymer, ethene and maleic acid ester copolymer, styrene and maleic acid ester copolymer, α- Alkene and maleic acid ester copolymer, vinyl acetate and acrylate copolymer, vinyl acetate and maleate Copolymer, ethene, vinyl alcohol and vinyl carboxylate copolymer, ethene, acrylic acid and acrylate copolymer, ethene, vinyl Methyl ether and maleic acid ester copolymer, ethene, vinyl acetate and maleic acid ester copolymer, ethene, generating vinyl carboxylate Ester and propene sulfonic acid salt copolymer, ethene, acrylate and propene sulfonic acid salt copolymer or acrylate, vinylpyridine and fourth two Any one in alcohol double methacrylate copolymer either between them two or more arbitrary proportion mixture and invariably The mixture of good chemical reaction；
" polycyclic aromatic hydrocarbon liquid " in the present invention：Refer to the liquid containing polycyclic aromatic hydrocarbon.
Further, the polycyclic aromatic hydrocarbon liquid be any one in following substances either between them two kinds or Two or more arbitrary proportion mixtures and without the mixture of bad chemical reaction：
1) polycyclic aromatic hydrocarbon, fusel oil mixing liquid and its emulsion, suspension；
2) polycyclic aromatic hydrocarbon, organic solvent mixing liquid and its emulsion, suspension；
3) polycyclic aromatic hydrocarbon emulsion, suspension；
4) less than the 100 DEG C polycyclic aromatic hydrocarbon liquids that are in a liquid state and its emulsion, suspension；
5) less than 100 DEG C polycyclic aromatic hydrocarbon, biphenyl mixing liquid and its emulsion, the suspensions that are in a liquid state；
6) less than 100 DEG C polycyclic aromatic hydrocarbon, crude oil mixed liquor body and its emulsion, the suspensions that are in a liquid state；
7) polycyclic aromatic hydrocarbon, liquid petroleum resin mixing liquid and its emulsion, suspension；
10) less than 100 DEG C polycyclic aromatic hydrocarbon, Petropols mixing liquid and its emulsion, the suspensions that are in a liquid state；
11) polycyclic aromatic hydrocarbon, organic liquid mixing liquid extremely emulsion, suspension.
" polycyclic aromatic hydrocarbon derivative liquid " in the present invention：Refer to the liquid containing polycyclic aromatic hydrocarbon derivative.
Further, the polycyclic aromatic hydrocarbon derivative liquid is any one in following substances either between them Two or more arbitrary proportion mixture and without the mixture of bad chemical reaction：
1) polycyclic aromatic hydrocarbon derivative is dissolved in the mixing liquid of fusel oil；
2) polycyclic aromatic hydrocarbon derivative is dissolved in the mixing liquid of organic solvent；
3) polycyclic aromatic hydrocarbon derivative emulsion, suspension；
4) less than the 100 DEG C polycyclic aromatic hydrocarbon derivative liquid that are in a liquid state；
5) less than 100 DEG C be in a liquid state polycyclic aromatic hydrocarbon derivative, biphenyl mixing liquid；
6) less than 100 DEG C the polycyclic aromatic hydrocarbon derivative, the crude oil mixed liquor bodies that are in a liquid state；
7) polycyclic aromatic hydrocarbon derivative is dissolved in the mixing liquid of liquid petroleum resin；
10) less than 100 DEG C be in a liquid state polycyclic aromatic hydrocarbon derivative, Petropols mixing liquid；
11) polycyclic aromatic hydrocarbon derivative is dissolved in the mixing liquid of organic liquid.
It is substantially special that " polycyclic aromatic hydrocarbon liquid, polycyclic aromatic hydrocarbon derivative liquid " in the present invention should possess following whole Levy：
1) heavy oil asphalt matter phase Precipitation Temperature can be reduced by more than 1 DEG C, or can dissolve at normal temperatures and pressures (or it is molten Solution) commodity pitch or commodity road asphalt；
2) it is liquid or less than 100 DEG C under normal temperature and pressure in liquid condition, or liquid can be made below 100 DEG C；
3) the countries concerned's standard, professional standard, enterprise are met in " thick oil type oil deposit " of the present invention exploitation application The regulation of standard, requirement.
Open source information shows：Commodity coal tar on domestic market contains methyl naphthalene, polycyclic aromatic hydrocarbon derivative, You Jirong Agent, belongs to the liquid containing polycyclic aromatic hydrocarbon, polycyclic aromatic hydrocarbon derivative, can reduce by 1 DEG C of heavy oil asphalt matter phase Precipitation Temperature More than, (or dissolving) commodity pitch or commodity road asphalt can be dissolved at normal temperatures and pressures, with polycyclic aromatic hydrocarbon liquid, thick The function of aromatic hydrocarbon ring derivative liquid；Applied but if coal tar is used for into " thick oil type oil deposit " of the present invention and exploited In, the countries concerned's standard, professional standard, the regulation of company standard, requirement are violated, does not possess " the polycyclic aromatic in the present invention Whole essential characteristics that hydrocarbon liquid, polycyclic aromatic hydrocarbon derivative liquid " should possess, therefore it is not belonging to " the condensed ring virtue in the present invention Fragrant hydrocarbon liquid, polycyclic aromatic hydrocarbon derivative liquid ".
Laboratory test shows：Polycyclic aromatic hydrocarbon, polycyclic aromatic hydrocarbon derivative can be dissolved in fusel oil, organic solvent, organic In liquid, liquid petroleum resin, crude oil；10% polycyclic aromatic hydrocarbon is dissolved in the polycyclic aromatic hydrocarbon of 90% liquid petroleum resin formation Liquid is added in the quiet 35 blocks of crude oil in Liaohe Oil Field, can effectively reduce the crude oil wax precipitation point more than 1 DEG C；By 10% polycyclic aromatic hydrocarbon The polycyclic aromatic hydrocarbon derivative liquid that derivative is dissolved in the formation of 90% liquid petroleum resin adds the quiet 35 east oil well in Liaohe Oil Field In crude oil, the crude oil asphaltenes phase Precipitation Temperature can be effectively reduced by more than 1 DEG C.
" polycyclic aromatic hydrocarbon " in the present invention refers to：In naphthalene, anthracene, phenanthrene, acenaphthene, aphthacene, pyrene, benzo acenaphthene any one or Person is the mixture of two or more any arbitrary proportion between them.
" polycyclic aromatic hydrocarbon derivative " in the present invention refers to：In dimethylnaphthalene, naphthols, naphthalenediol, methylphenanthrene, phenanthrol The mixture of any one two or more any arbitrary proportion either between them.
Open source information shows：Polycyclic aromatic hydrocarbon, polycyclic aromatic hydrocarbon derivative can be dissolved in crude oil, solvent, can participate in group Into wax Jingjing core, suppress the brilliant growth process of wax, with wax control effect, belong to wax-proofing agent category.
" hydro carbons autopolymer " in the present invention refers to：Unsaturated hydrocarbons is in its natural state by formed by natural auto polymerization Polymer, belongs to the accessory substance or discarded object of petroleum chemical industry, such as from cyclopentadiene head tank tank bottom from polycyclopentadithio.henes Alkene solid content.
" liquid petroleum resin " in the present invention refers to：The Petropols being in a liquid state under normal temperature.
" expansion-resisting agent " in the present invention refers to：Amine salt cationic surfactant, quaternary ammonium salt type cationic surface active Agent, pyridine salt type cationic surfactant, sylvite, ammonium salt, water-soluble aluminum salt, water soluble zirconium salt, ammoniacal liquor, aluminium polychloride are clear Any one or two or more arbitrary proportion mixing of the aqueous solution, commodity expansion-resisting agent and without the mixing of bad chemical reaction Thing；The essential characteristic of the cationic surface active agent is：It can be dissociated in water, the part of active function is played after dissociation is Cation.
" special gas " in the present invention refers to：Any one of natural gas, carbon dioxide, nitrogen, refinery gas, flue gas Or the mixture of two or more any arbitrary proportion；
In order to solve the above technical problems, a kind of exploitation method of thick oil type oil deposit of the invention, comprises the following steps：
Chemical agent and hot fluid are added into oil reservoir, to melt in the asphalitine phase in (or dissolving) oil reservoir, reduction oil reservoir The asphalitine phase Precipitation Temperature of crude oil, makes the smooth seepage flow of the crude oil in oil reservoir to oil well, then allows crude oil to rise to ground from oil well Face；
Described chemical agent and hot-fluid physical efficiency joint synergy, effective asphalitine phase melted in (or dissolving) oil reservoir, Reduce the asphalitine phase Precipitation Temperature of oil reservoir Crude Oil or in effectively fusing (or dissolving) oil reservoir studies on asphaltene phase, reduction oil reservoir Formation pressure is improved while Crude Oil asphalitine phase Precipitation Temperature, to make the smooth seepage flow of the crude oil in oil reservoir to oil well.For Preceding aim is reached, the chemical agent and hot fluid can determine each by existing method as those of ordinary skill in the art Minimum addition, maximum adding quantity；
Described chemical agent should ensure that its application added into oil reservoir meet the countries concerned's standard or professional standard, Or company standard regulation is with requiring., can be excellent by existing method as those of ordinary skill in the art to reach preceding aim Select, determine the concrete component or specific commodity of the chemical agent；
Chemical agent and the hot-fluid physical efficiency is contacted and joint synergy in oil reservoir, effectively in fusing (or dissolving) oil reservoir Asphalitine phase, reduce oil reservoir Crude Oil asphalitine phase Precipitation Temperature, make the smooth seepage flow of the crude oil in oil reservoir to oil well.For up to To preceding aim, it be can determine as those of ordinary skill in the art by existing method and chemical agent and hot-fluid added into oil reservoir The concrete technical schemes such as specific method, the addition order of body, can determine that the chemical agent and hot fluid are before oil reservoir is added It is no to need to mix and whether need to mix in ground or/and oil well, and can determine the chemical agent and hot fluid mixing When the concrete technical scheme such as the hybrid mode, the mixed proportion that are used.
Open source information shows：The current country has many maturation methods, equipment that crude oil can be allowed to rise to ground from oil well, such as Crude oil can be promoted to ground from oil well with oil pumper, can also be pumped crude oil from oil well with electric submersible pump or screw pump To ground.
From hydrodynamics：Due to there is very high pressure in oil reservoir, fluid is added after oil reservoir, oil reservoir can be increased Pressure；If the crude oil in oil reservoir can flow (seepage flow), and the pressure in oil well is less than formation pressure, and the crude oil in oil reservoir is just Can seepage flow enter in oil well.
Further, for normal, effectively heavy crude producing type oil reservoir, chemical agent can be periodically added into oil reservoir And hot fluid, to melt the asphalitine phase in (or dissolving) oil reservoir, the asphalitine phase Precipitation Temperature of oil reservoir Crude Oil is reduced, makes oil Then the smooth seepage flow of crude oil in layer allow crude oil to rise to ground from oil well to oil well；
Described chemical agent and hot fluid can be added in oil reservoir behind ground or/and underground mixing, can also be added respectively Enter in oil reservoir；
The underground refers to：Oil well below ground part, can also refer to part below water injection well ground.
Further, will with existing method (as pumped) by oil well in order to which chemical agent and hot fluid are added in oil reservoir Chemical agent and hot fluid are added in oil reservoir respectively or/and after mixing, to melt the asphalitine phase in (or dissolving) oil reservoir, reduction oil The asphalitine phase Precipitation Temperature of layer Crude Oil, makes the smooth seepage flow of the crude oil in oil reservoir to oil well, then allowed with existing method crude oil from Ground is risen in oil well；
Chemical agent and hot fluid are added in oil reservoir for fixed tubular column, oil well casing existing method can be passed through (as pumped) adds chemical agent and hot fluid in oil reservoir respectively or/and after mixing；
In order to reduce hot fluid energy consumption, or in order to improve hot-fluid body temperature as far as possible in the range of structure of oil well bearing capacity Degree, or in order to reduce hot fluid into the heat loss and temperature drop before oil reservoir in oil well, can also be by oil well oil conduit with existing Method (as pumped) adds chemical agent and hot fluid in oil reservoir respectively or/and after mixing；
The mixing can refer to chemical agent and hot fluid in the mixing on ground or refer to chemical agent and hot fluid exists Mixing in oil well (such as chemical agent and hot fluid alternately enter the natural mixing after pipeline, oil well)；
The mixing can guarantee that chemical agent and hot fluid are effectively contacted and joint synergy in oil reservoir, effectively fusing Asphalitine phase in (or dissolving) oil reservoir, reduces the asphalitine phase Precipitation Temperature of oil reservoir Crude Oil, makes the crude oil in oil reservoir smooth Seepage flow is to oil well.To reach preceding aim, the chemistry can determine by existing method as those of ordinary skill in the art Whether whether agent and hot fluid need to mix before oil reservoir is added and need to mix in ground or/and oil well, and can be true The concrete technical schemes such as hybrid mode, the mixed proportion used during fixed chemical agent and the hot fluid mixing.
Further, heat loss before oil reservoir in oil well is entered in order to reduce hot fluid and/or chemical agent, it is ensured that hot-fluid The temperature that body, chemical agent enter oil reservoir is higher, and special gas is first added into oil well casing, then by oil well oil conduit to oil reservoir Middle addition chemical agent and hot fluid, to melt the asphalitine phase in (or dissolving) oil reservoir, reduce the asphalitine phase of oil reservoir Crude Oil Precipitation Temperature, makes the smooth seepage flow of the crude oil in oil reservoir to oil well, then allows crude oil to rise to ground from oil well；
The special gas should ensure that effectively heat loss of the reduction hot fluid, chemical agent in oil well.It is foregoing to reach Target, minimum addition, the maximum of the special gas are can determine as those of ordinary skill in the art by existing method Addition.
Further, can also be by oil well, periodically to oil reservoir for normal, effectively heavy crude producing type oil reservoir Middle addition chemical agent and hot fluid, to melt the asphalitine phase in (or dissolving) oil reservoir, reduce the asphalitine phase of oil reservoir Crude Oil Precipitation Temperature, makes the smooth seepage flow of the crude oil in oil reservoir allow crude oil to rise to ground from oil well to oil well, then with existing method；
Described chemical agent and hot fluid are added in oil reservoir after being mixed in ground or/and oil well, can also be distinguished Add in oil reservoir；
Described periodicity can refer to the mode of fixed cycle or refer to cycle indefinite mode.
Open source information shows：Although the reservoir volume of oil well control is huge, because the pressure in oil reservoir is very high, such as buried depth 1000 meters of oil reservoir reset pressure is general in 10MPa or so, therefore the chemical agent and hot fluid of flood tide are once injected into oil reservoir Formation pressure can be made very high, construction cost can be significantly increased or causes complex process equipment, such as once to pressure 10MPa oil reservoirs 10000 tons of chemical agents of middle injection and hot fluid are there is a possibility that formation pressure is more than 50MPa, so as to can be carried more than well mouth of oil well Operating pressure or oil reservoir fracture pressure；Therefore, should be in batches or periodically add chemical agent and hot-fluid into oil reservoir Body, after a certain amount of chemical agent and hot fluid are added into oil reservoir, then allow add oil reservoir in chemical agent, hot fluid and crude oil " seepage flow return " enters in oil well and ground is raised to from oil well, the pressure of oil reservoir is dropped while oil extraction is come out It is low, chemical agent and hot fluid are then added into oil reservoir again, " huff and puff oil recovery technique " that oilfield applications are commonly called as is formed, can just have Imitate heavy crude producing type oil reservoir.
Further, in order to prevent from once adding chemical agent and too big hot fluid total amount into oil reservoir the drawbacks of, by chemistry Agent and hot fluid are added around oil well in oil reservoir, then allow chemical agent and hot fluid to be back to the oil with the crude oil seepage flow in oil reservoir Well simultaneously rises to ground by the oil well, realizes the chemical agent of oil reservoir around oil well-hot fluid joint huff and puff oil recovery mode (or work Skill), by oil well, chemical agent and hot fluid are added in the oil reservoir around the oil well with existing method (as pumped), to melt Asphalitine phase in (or dissolving) oil reservoir, reduces the asphalitine phase Precipitation Temperature of oil reservoir Crude Oil, makes the crude oil in oil reservoir and change Learn agent, the smooth seepage flow of hot fluid mixture to be back to the oil well, then ground is risen to by the oil well, to realize oil reservoir around oil well Chemical agent-hot fluid joint huff and puff oil recovery mode (or technique)；
The chemical agent and hot fluid are added in the oil reservoir around oil well after being mixed on ground, can also be in oil well (such as chemical agent and hot fluid alternately enter the natural mixing after pipeline, oil well) is mixed to add in the oil reservoir around oil well afterwards, It can be separately added into the oil reservoir around oil well；
The crude oil and chemical agent, hot fluid mixture are mixed naturally in oil reservoir；The crude oil and chemistry Agent, hot fluid can common seepage flow be to oil well in oil reservoir, and seepage flow or respective seepage flow are to oil well when can also be different；
Described chemical agent, hot fluid can whole seepage flow be back to oil well, can also part seepage flow be back to oil well and A part is remained in oil reservoir；
The chemical agent-hot fluid joint huff and puff oil recovery mode (or technique) refers to：By oil well by chemical agent and hot-fluid Body is added in oil reservoir, then the crude oil seepage flow allowed in chemical agent, hot fluid and oil reservoir is back to the oil well and risen to by the oil well The oil production method (or technique) on ground；Will chemical agent and hot fluid to add in oil reservoir be " the gulping down " being commonly called as, allow chemical agent, hot-fluid It is " telling " for being commonly called as that crude oil seepage flow in body and oil reservoir, which is back to the oil well and rises to ground by the oil well,；
Described chemical agent and hot fluid, which should ensure that to press in the application of oil reservoir around addition oil well, wears oil reservoir, Ying Bao Card will not enter a large amount of pushing tows of crude oil in oil reservoir in non-oil reservoir.In order to reach preceding aim, ordinary skill people is used as Member can determine that the maximum total amount, maximum of adding for adding the chemical agent and hot fluid in oil reservoir adds pressure by existing method Power.
Open source information shows：Pressure in oil reservoir is very high, left in 10MPa as the oil reservoir reset pressure of 1000 meters of buried depth The right side, and chemical agent and hot fluid are added into oil reservoir can then increase formation pressure；Therefore, when the chemical agent that is added into oil reservoir and When hot fluid total amount reaches certain limit, it is difficult to continuously add chemical agent and hot fluid into oil reservoir again, or is further continued for adding Cost can be increased or cause complex process equipment by entering chemical agent and hot fluid；If moreover, once adding chemistry into oil reservoir The total amount of agent and hot fluid is too big, can be by the crude oil pushing tow in oil reservoir to apart from the farther oil reservoir of oil well or even beyond oil well seepage flow Can control scope and be difficult to return to oil well with chemical agent and hot fluid again, make the crude oil in oil reservoir can not be mined；Sternly Weight, if once the total amount of addition chemical agent and hot fluid is too big into oil reservoir, the pressure in oil reservoir can be made to exceed oil reservoir rock The fracture pressure of stone, causes oil reservoir to be pressed and wears, and by crude oil, pushing tow loses to non-oil reservoir from oil reservoir, and brings huge to oil reservoir Big destruction, makes oil extraction not to be normally carried out again；Therefore, added into oil reservoir after a certain amount of chemical agent and hot fluid, The chemical agent, hot fluid and the crude oil " seepage flow return " that allow in oil reservoir is needed to enter in oil well and be raised to ground from oil well, by original Oil is minimized the pressure of oil reservoir while mined, then could add chemical agent and hot fluid into oil reservoir again, " huff and puff oil recovery technique " that i.e. oilfield applications are commonly called as；Therefore, should first will be oily around oil well for effective heavy crude producing type oil reservoir Oil extraction in layer comes out.
From hydrodynamics：Due to there is very high pressure in oil reservoir, oil is added from oil well by chemical agent and hot fluid Around well after oil reservoir, the pressure of oil reservoir around oil well can be increased；If the pressure in oil well is less than the original in formation pressure, oil reservoir Oil just can be to oil well seepage flow, and the chemical agent and hot fluid added in oil reservoir also being capable of seepage flow oil return well；And crude oil and chemical agent, Hot fluid can nature mixing during to oil well seepage flow.
Further, oil well is controlled into oil reservoir in order to combine huff and puff oil recovery mode (or technique) using chemical agent-hot fluid In oil extraction come out, and then the purpose of effective heavy crude producing type oil reservoir is realized, first with existing method (as pumped) by chemistry Agent is added in oil well, is then added hot fluid in oil well with existing method (as pump), with hot fluid by chemical agent pushing tow extremely The oil well controls the precalculated position of oil reservoir, to melt the asphalitine phase in (or dissolving) oil reservoir, reduces the pitch of oil reservoir Crude Oil Matter phase Precipitation Temperature, makes crude oil and chemical agent in oil reservoir, the smooth seepage flow of hot fluid mixture be back to the oil well, then pass through this Oil well rises to ground；Then these steps are repeated, are carried out by these step cycles, oil well is controlled into the oil extraction in oil reservoir Out；
Existing method is used after first can also mixing chemical agent and its 1-10 times hot fluid in ground or/and oil well (as pump) is added in oil well, is then added hot fluid in oil well with existing method (as pumped), with hot fluid by chemical agent Pushing tow controls the precalculated position of oil reservoir to the oil well, to melt the asphalitine phase in (or dissolving) oil reservoir, reduces oil reservoir Crude Oil Asphalitine phase Precipitation Temperature, crude oil and chemical agent in oil reservoir, the smooth seepage flow of hot fluid mixture is back to the oil well, then Ground is risen to by the oil well；Then these steps are repeated, are carried out by these step cycles, oil well is controlled into the original in oil reservoir Oil is mined；
Added after first can also mixing chemical agent and hot fluid in ground or/and oil well with existing method (as pumped) In oil well, then by oil well enter the oil well control oil reservoir precalculated position, with melt (or dissolving) oil reservoir in asphalitine Phase, reduces the asphalitine phase Precipitation Temperature of oil reservoir Crude Oil, crude oil and chemical agent in oil reservoir, hot fluid mixture is smoothly oozed Stream is back to the oil well, then rises to ground by the oil well；Then these steps are repeated, are carried out by these step cycles, will Oil extraction in oil well control oil reservoir comes out；
Existing method (as pump) can also be first used to add chemical agent in oil well, then with special gas by chemical agent top Promote in oil reservoir, then hot fluid is added in oil well with existing method (as pumped), chemical agent pushing tow extremely should with hot fluid Oil well controls the precalculated position of oil reservoir, to melt the asphalitine phase in (or dissolving) oil reservoir, reduces the asphalitine of oil reservoir Crude Oil Phase Precipitation Temperature, makes crude oil and chemical agent in oil reservoir, the smooth seepage flow of hot fluid mixture be back to the oil well, then pass through the oil Well rises to ground；Then these steps are repeated, are carried out by these step cycles, control the oil extraction in oil reservoir to go out oil well Come；
Existing method is used after first can also mixing chemical agent and its 1-10 times hot fluid in ground or/and oil well (as pumped) is added in oil well, is then entered chemical agent, hot fluid mixture pushing tow in oil reservoir with special gas, then with existing Method (as pumped) adds hot fluid in oil well, and chemical agent pushing tow to the oil well is controlled to the pre-determined bit of oil reservoir with hot fluid Put, to melt the asphalitine phase in (or dissolving) oil reservoir, reduce the asphalitine phase Precipitation Temperature of oil reservoir Crude Oil, make in oil reservoir Crude oil and chemical agent, the smooth seepage flow of hot fluid mixture are back to the oil well, then rise to ground by the oil well；Then this is repeated A little steps, are carried out by these step cycles, control the oil extraction in oil reservoir to come out oil well；
Chemical agent, hot fluid are added into oil well respectively or/and after mixing for fixed tubular column and then oil well control is pushed into The precalculated position of oil reservoir, can be respectively or/and mixed by chemical agent and hot fluid by oil well casing existing method (as pumped) Oil well is added after conjunction and then the precalculated position that oil well controls oil reservoir is pushed into；
In order to reduce hot fluid energy consumption, or in order to improve hot-fluid body temperature as far as possible in the range of structure of oil well bearing capacity Degree, or in order to reduce hot fluid into the heat loss and temperature drop before oil reservoir in oil well, can also be by oil well oil conduit with existing Chemical agent and hot fluid are added oil well and then are pushed into the predetermined of oil well control oil reservoir by method (as pumped) respectively or/and after mixing Position；
Enter heat loss before oil reservoir in oil well to reduce hot fluid and/or chemical agent, it is ensured that hot fluid, chemical agent Temperature into oil reservoir is higher, and special gas is first added into oil well casing, then by oil well oil conduit by chemical agent and hot-fluid Body adds oil reservoir and then is pushed into the precalculated position that oil well controls oil reservoir respectively or/and after mixing；
The chemical agent-hot fluid joint huff and puff oil recovery mode (or technique) refers to：Chemical agent and hot fluid are added into oil In layer, then the crude oil seepage flow allowed in chemical agent, hot fluid and oil reservoir is back to oil well and the oil recovery side on ground is risen to by oil well Formula (or technique)；Will chemical agent and hot fluid to add in oil reservoir be " the gulping down " being commonly called as, allow in chemical agent, hot fluid and oil reservoir It is " telling " for being commonly called as that crude oil seepage flow, which is back to oil well and rises to ground by oil well,；
Described oil well control oil reservoir：Refer to centered on oil well, using oil well spacing half as the oil reservoir in radius, Also the oil reservoir controlled in well design control range is referred to, the design of its specific scope, index etc. is the conventional maturation side in oil field Method；
Described precalculated position refers to：The oil reservoir position that chemical agent set in advance, hot fluid should be reached, can use oil Layer treatment radius, can also be with formation treatment volume as representing index as index is represented；Described formation treatment radius is Finger is by round dot of oil well bottom centre, the radius that chemical agent and hot fluid can be reached in oil reservoir；At described oil reservoir Reason volume refers to the total reservoir volume that line, chemical agent and hot fluid can be reached in oil reservoir centered on well center.As Those of ordinary skill in the art can determine the precalculated position, formation treatment by existing method and oil-water well, oil reservoir data Radius, the specific targets of formation treatment volume, technical scheme etc.；
The crude oil and chemical agent, hot fluid mixture are mixed naturally in oil reservoir；The crude oil and chemistry Agent, hot fluid can in oil reservoir common seepage flow, seepage flow or respective seepage flow when can also be different；
Described chemical agent, hot fluid can whole seepage flow be back to oil well, can also part seepage flow be back to oil well and A part is remained in oil reservoir；
The oil well spacing refers to：Designed distance between two mouthfuls of wells, belongs to oilfield design term, its setting side Method, technical scheme are the conventional maturation methods in oil field；Open source information shows：The oil well spacing of oil field at home is generally 100-500 Rice, also has the oil well spacing of a small amount of oil well outside this range.
Open source information shows：The basic recovery method of oil reservoir is to build oil well in oil reservoir, and corresponding oil reservoir is controlled with oil well Scope, is then controlled the oil extraction in oil reservoir to come out by oil well, and ripe method is belonged at home；The construction of oil well The method for falling within maturation.
Open source information shows：Oil well is connected with oil reservoir, and the crude oil in oil reservoir can enter oil well；Conversely, by fluid Add in oil well, can also be entered by oil well in oil reservoir.
Open source information shows：Oil well typically has oil pipe and sleeve pipe, and oil pipe has annular sky in sleeve pipe, between oil pipe and sleeve pipe Between, oil pipe and sleeve pipe can be connected as communicating pipe, can also be closed as not connecting with packer.
Open source information shows：Dynamic tubing string belongs to oil well operation category, costly, therefore fixed tubular column can reduce construction Expense, saves cost for oil production.
Further, can also be by water injection well existing method (such as in order to which chemical agent and hot fluid are added in oil reservoir Pumping) chemical agent and hot fluid are added in oil reservoir respectively or/and after mixing, to melt the asphalitine in (or dissolving) oil reservoir Phase, reduces the asphalitine phase Precipitation Temperature of oil reservoir Crude Oil, makes the smooth seepage flow of the crude oil in oil reservoir to oil well, then use existing method Crude oil is allowed to rise to ground from oil well；
Chemical agent and hot fluid are added in oil reservoir for fixed tubular column, existing side can also be used by water filling casing Method (as pumped) adds chemical agent and hot fluid in oil reservoir；
In order to reduce hot fluid energy consumption, or in order to improve hot-fluid body temperature as far as possible in the range of water injection well structural-load-carrying capacity Degree, or in order to reduce hot fluid into heat loss and temperature drop before oil reservoir in water injection well, can also be used by injection well tubing Existing method (as pumped) adds chemical agent and hot fluid in oil reservoir；
The mixing can refer to chemical agent and hot fluid in the mixing on ground or refer to chemical agent and hot fluid exists Mixing in water injection well (such as chemical agent and hot fluid alternately enter the natural mixing after pipeline, water injection well)；
The mixing should ensure that chemical agent and hot fluid are effectively contacted and joint synergy in oil reservoir, effectively fusing Asphalitine phase in (or dissolving) oil reservoir, reduces the asphalitine phase Precipitation Temperature of oil reservoir Crude Oil, makes the crude oil in oil reservoir smooth Seepage flow is to oil well.To reach preceding aim, the chemistry can determine by existing method as those of ordinary skill in the art Whether whether agent and hot fluid need to mix before oil reservoir is added and need to mix in ground or/and water injection well, and can Determine the concrete technical scheme such as hybrid mode, mixed proportion for the being used when chemical agent and hot fluid mixing.
Further, heat loss before oil reservoir in water injection well is entered in order to reduce hot fluid and/or chemical agent, it is ensured that heat The temperature that fluid, chemical agent enter oil reservoir is higher, and special gas is first added into water filling casing, then passes through injection well tubing Chemical agent and hot fluid are added into oil reservoir, to melt the asphalitine phase in (or dissolving) oil reservoir, the drip of oil reservoir Crude Oil is reduced Blue or green matter phase Precipitation Temperature, makes the smooth seepage flow of the crude oil in oil reservoir to oil well, then allows crude oil to rise to ground from oil well；
The special gas should ensure that effectively heat loss of the reduction hot fluid, chemical agent in water injection well.Before reaching Target is stated, the minimum addition, most of the special gas is can determine by existing method as those of ordinary skill in the art Big addition.
Further, can also be by water injection well, periodically to oil for normal, effectively heavy crude producing type oil reservoir Chemical agent and hot fluid are added in layer, to melt the asphalitine phase in (or dissolving) oil reservoir, the asphalitine of oil reservoir Crude Oil is reduced Phase Precipitation Temperature, makes the smooth seepage flow of the crude oil in oil reservoir to oil well, then allows crude oil to rise to ground from oil well.；
Described chemical agent and hot fluid are added in oil reservoir after being mixed in ground or/and water injection well, can also be divided Jia Ru not be in oil reservoir；
Described periodicity can refer to the mode of fixed cycle or refer to cycle indefinite mode.
Open source information shows：Although the reservoir volume of water injection well control is huge, because the pressure in oil reservoir is very high, once The chemical agent and hot fluid of flood tide are injected into oil reservoir to make formation pressure very high, and construction cost can be significantly increased or causes technique Equipment is complicated；Therefore, should be in batches or chemical agent and hot fluid are periodically added into oil reservoir, added into oil reservoir After a certain amount of chemical agent and hot fluid, then the chemical agent, hot fluid and the crude oil " seepage flow return " that add in oil reservoir is allowed to enter oil well In and be raised to ground from oil well, be minimized the pressure of oil reservoir while oil extraction is come out, then again to oil Chemical agent and hot fluid are added in layer, is formed " huff and puff oil recovery technique " that oilfield applications are commonly called as, could effective heavy crude producing type oil Hide.
Further, in order to the residual crude oil in oil reservoir around water injection well is mined, and then realize and effectively exploit thick The purpose of oil type oil reservoir, is first converted to oil well by water injection well, is then combined with afore mentioned chemical agent-hot fluid in the present invention and handled up Oil production method (or technique) is mined by the residual crude oil in oil reservoir around water injection well；
Described water injection well should possess the condition for allowing crude oil to rise to ground (recovering the oil), be used as those of ordinary skill in the art It can be determined to be converted into the water injection well into the specific mode of production, the technical scheme of oil well with existing method.
Open source information shows：There are a large amount of residual crude oils in the surrounding's oil reservoir for being converted to water injection well by oil well, with common note The method of water is difficult that its is mined；By taking quiet 35 blocks of east oil reservoirs as an example, although the water injection well of the block once carried out well The heat note experiment of 90 DEG C of saliva temperature, but used in the normal flooding production before and after heat note off-test is that normal oil field is dirty Water, its well head water temperature is generally 40-50, already below the crude oil asphaltenes phase Precipitation Temperature of the block, therefore enters after oil reservoir The formation of asphalitine phase (and wax is brilliant) can be aggravated, more crude oil are inevitably resulted in and remain in oil reservoir and can not produce, cause The wasting of resources；Therefore, by the residual crude oil in oil reservoir around water injection well it is mined be necessary；Because water injection well is converted into oil Well is afore mentioned chemical agent-hot fluid joint huff and puff oil recovery mode (or technique) in ripe method, therefore the water injection well present invention Effect be expected.
From hydrodynamics：Due to there is very high pressure in oil reservoir, chemical agent and hot fluid are added into water injection well week Enclose after oil reservoir, the pressure of oil reservoir around water injection well can be increased；If the pressure in water injection well is less than the original in formation pressure, oil reservoir Oil just can be to water injection well seepage flow, and the chemical agent and hot fluid added in oil reservoir also being capable of seepage flow re-injection well；And crude oil and change Learning agent, hot fluid can nature mixing during to water injection well seepage flow.
Further, in order to control the oil extraction in oil reservoir to come out water injection well, and then effective heavy crude producing type is realized The purpose of oil reservoir, is first converted to oil well by water injection well, then with afore mentioned chemical agent in the present invention-hot fluid joint huff and puff oil recovery side Water injection well is controlled the oil extraction in oil reservoir to come out by formula (or technique)；
Described water injection well control oil reservoir：Refer to centered on water injection well, with the oil well spacing one between water injection well and oil well Half is the oil reservoir in radius, also refers to the oil reservoir controlled in water injection well design control range, can also refer to and be converted into water filling The original oil well control oil reservoir of the oil well of well, the design of its specific scope, index etc. is the conventional maturation method in oil field；
Described water injection well should possess the condition for allowing crude oil to rise to ground (recovering the oil), be used as those of ordinary skill in the art It can be determined to be converted into the water injection well into the specific mode of production, the technical scheme of oil well with existing method.
Open source information shows：The recovery ratio of thick oil type oil deposit is very low, by taking quiet 35 blocks of east oil reservoirs as an example, its adopting more than 15 years Yield only has 3%, and its projected ultimate recovery only has 10%, and its Theoretical Calibration ultimate recovery is 20%；Therefore, water injection well without By being to be converted by oil well or newly-built, still there is 80%-97% crude oil in the oil reservoir controlled, if do not exploited The wasting of resources can out be caused；Ripe method because water injection well is converted into oil well, thus water injection well it is of the invention in it is foregoing The effect of chemical agent-hot fluid joint huff and puff oil recovery mode (or technique) is expected.
Further, in order to which utilization chemical agent-hot fluid joint displacement of reservoir oil oil production method (or technique) more cost-effectively is opened Thick oil type oil deposit is adopted, oil reservoir ultimate recovery is improved, a kind of exploitation method of thick oil type oil deposit of the invention comprises the following steps：It is logical Centerwell is crossed, is added chemical agent and hot fluid in oil reservoir with existing method (as pumped), the drip in fusing (or dissolving) oil reservoir Blue or green matter phase, reduces the asphalitine phase Precipitation Temperature of oil reservoir Crude Oil, and drives the smooth seepage flow of the crude oil in oil reservoir to centerwell week In the producing well enclosed, then allow crude oil to rise to ground from producing well, the oil extraction in oil reservoir is come out；
Chemical agent, hot fluid are added in oil reservoir for fixed tubular column, can be by oil well casing existing method (such as Pumping) chemical agent and hot fluid are added in oil reservoir；
In order to reduce hot fluid energy consumption, or in order to improve hot-fluid body temperature as far as possible in the range of structure of oil well bearing capacity Degree, or in order to reduce hot fluid into the heat loss and temperature drop before oil reservoir in oil well, can also be by oil well oil conduit with existing Method (as pumped) adds chemical agent and hot fluid in oil reservoir；
Enter heat loss before oil reservoir in oil well to reduce hot fluid and/or chemical agent, it is ensured that hot fluid, chemical agent Temperature into oil reservoir is higher, and special gas is first added into oil well casing, then by oil well oil conduit by chemical agent and hot-fluid Body is added in oil reservoir；Described special gas can also be periodically added into oil well casing, to supplement described special gas Into the loss in oil reservoir；
Described centerwell refers to：For the oil well for adding chemical agent and hot fluid in oil reservoir, it can be oil well, also may be used With the chemical agent and/or hot fluid injection well for being water injection well or specially building, typically it is not used to produce crude oil；
Described producing well：Oil well can be referred to or referred to possess oil recovery condition, the water filling of oil well can be converted to Well, can refer to 1 mouthful of well or refer to the well of 2 mouthfuls and more than 2 mouthfuls；Can be built according to existing oil field development technical scheme Into well or it is anti-5 points or it is anti-9 points arrangement oil well；It can be production well or possess the spy of oil recovery condition Well；
The centerwell should be able to be connected with producing well by oil reservoir；
Described chemical agent-hot fluid joint displacement of reservoir oil oil production method or technique：Refer to add chemical agent and heat from centerwell Fluid, the oil recovery side for allowing chemical agent, hot fluid to drive the crude oil seepage flow in oil reservoir to rise to ground to producing well and by producing well Formula or technique, allow chemical agent, hot fluid to drive the crude oil seepage flow in oil reservoir to producing well to be " drive " that oil field is commonly called as；
Described chemical agent and hot fluid are added in oil reservoir after being mixed in ground or/and centerwell, can also be divided Not or be alternately added in oil reservoir；Continuously can add always in oil reservoir, can also be needed to suspend at any time according to production plus Enter in oil reservoir or adjustment adds the specific time of oil reservoir；It can be determined as those of ordinary skill in the art with existing method described Chemical agent and hot fluid add oil reservoir in concrete technical scheme；
Chemical agent-hot fluid joint displacement of reservoir oil that described centerwell should be able to meet centerwell addition-producing well extraction is recovered the oil The need for mode or technique, the need for meeting thick oil type oil deposit exploitation, existing side can be used as those of ordinary skill in the art Method determines particular geographic location and requirement of the centerwell in thick oil type oil deposit, can determine chemical agent and hot fluid From centerwell add oil reservoir in specific method, technical scheme, and can determine its particular number ratio with the producing well, The technical schemes such as relative position；
Chemical agent-hot fluid joint displacement of reservoir oil that described producing well should be able to meet centerwell addition-producing well extraction is recovered the oil The need for mode or technique, the need for meeting thick oil type oil deposit exploitation, existing side can be used as those of ordinary skill in the art Method determines particular geographic location and requirement of the producing well in thick oil type oil deposit, can determine that it allows crude oil to rise to ground The specific mode of production, technical scheme, and can determine its with particular number ratio, the relative position of the centerwell etc. technology Scheme.
Open source information shows：The oil recovery side of various " drives " such as water drive, chemical flooding, steam drive, surfactant flooding, gas drives The recovery ratio of method, ultimate recovery are higher than the oil production method of corresponding " handling up ", therefore chemical agent-hot fluid joint displacement of reservoir oil oil recovery side The effect of formula is better than chemical agent-hot fluid joint huff and puff oil recovery mode and is expected.
Open source information shows：Oil reservoir was produced after a period of time, and the pressure ratio reset pressure in oil reservoir is much lower；Flooding production Practice have shown that：Oilfield sewage can be by water injection well seepage flow into the oil well around it；Therefore, centerwell addition-producing well is adopted The chemical agent gone out-hot fluid joint displacement of reservoir oil oil production method can be implemented be expected in actual production.
Open source information shows：Current oil-field flooding mode typically uses or anti-9 arrangements at anti-5 points, i.e.,：Water injection well exists There is there are 5 mouthfuls of oil wells around 5 mouthfuls of oil wells or 9 mouthfuls of oil well production crude oil, water injection well to be commonly called as anti-5 water fillings around center, water injection well Have 9 mouthfuls of oil wells around method, water injection well is commonly called as anti-9 water floods；Therefore, chemical agent and hot fluid are added into oil using centerwell In layer, using 5 mouthfuls around centerwell or 9 mouthfuls of Production Wells crude oil, with corresponding anti-5 water floods, anti-9 water flood originals Reason is similar, therefore its effect is expected；Also therefore, 1 mouthful of centerwell is corresponded in 1 mouthful or 2 mouthfuls or more than 2 mouthfuls producing wells Chemical agent-hot fluid joint displacement of reservoir oil oil production method effect of heart well addition-producing well extraction is also what is be expected.
Open source information shows：Prospect pit can also be converted to production well, be ripe method and normal hair in the production of oil field Raw thing.
Further, in order to improve permeability, porosity and the percolation ability of oil reservoir, more cost-effective ground heavy crude producing type Oil reservoir, is first acidified or/and pressure break with existing method to oil reservoir, to improve permeability, porosity and the percolation ability of oil reservoir； Chemical agent and hot fluid are added into oil reservoir again, to melt the asphalitine phase in (or dissolving) oil reservoir, reduction oil reservoir Crude Oil Asphalitine phase Precipitation Temperature, makes the smooth seepage flow of the crude oil in oil reservoir to oil well, then allows crude oil to rise to ground from oil well；
Described acidifying refers to：The acid treatment of oil-water well, is a kind of maturation process method commonly used in production of recovering the oil, can be with Applied to oil well, water injection well can also be applied to；Described acidifying can be carried out periodically, but open source information shows described pressure Split and typically only carried out once in same a bite oil well or well；
Described pressure break refers to：Oil reservoir is pressed off with pressure, fracturing fluid etc. and crack is formed, is commonly used during oil recovery is produced A kind of maturation process method, can apply to oil well, can also be applied to water injection well；
The acidifying, pressure break should ensure that adverse chemical reaction does not occur with the chemical agent for the material used in it.For up to To preceding aim, as those of ordinary skill in the art can be determined using existing method the acidifying, pressure break technical scheme, And can determine the specific species of its material used.
Open source information shows：It is described acidifying, pressure break be maturation process method, each can independently carry out or combine into OK, the crude oil property and reservoir temperature in oil reservoir will not be changed, it is impossible to melt the asphalitine phase separated out in (or dissolving) oil reservoir, but Permeability, porosity and the percolation ability of oil reservoir can be improved；Therefore, first oil reservoir is acidified or/and pressure break, then to oil reservoir Middle addition chemical agent and hot fluid, the exploitation that would be even more beneficial to crude oil seepage flow and thick oil type oil deposit are expected.
Further, in order to prevent chemical agent largely enters hypertonic pervious bed from causing chemical agent to waste, also for allowing chemistry Different infiltrations of the agent more uniformly into same oil well or/and different permeability oil reservoirs or same oil reservoir in water injection well are commanded troops In position, hole, and ensure that chemical agent and hot fluid can be added smoothly in oil reservoir, first to oil well or/and water injection well or/and oil reservoir Hot fluid is squeezed in pilot scale, then adds chemical agent and hot fluid into oil reservoir, to melt the asphalitine phase in (or dissolving) oil reservoir, reduction The asphalitine phase Precipitation Temperature of oil reservoir Crude Oil, makes the smooth seepage flow of the crude oil in oil reservoir to oil well, then allows crude oil from oil well Rise to ground；
Described examination, which is squeezed, to be referred to：The experimental or exploratory or scouting property carried out to oil well or/and water injection well or/and oil reservoir Water-filling method or process, therefore chemical agent and hot fluid can be being added into oil well or/and water injection well or/and oil reservoir every time Preceding to carry out, open source information shows：It is the maturation process method commonly used in oil extraction in oil field production that described examination, which is squeezed, can every time to Chemical agent and hot fluid are added in oil well or/and water injection well or/and oil reservoir
The examination, which is squeezed, should ensure that chemical agent and hot fluid are smoothly added in oil reservoir, reduces chemical agent and wastes, allows chemical agent More uniformly enter same oil well or/and different permeability oil reservoirs or same oil reservoir in water injection well different permeability positions, In hole, and meet the countries concerned's standard, professional standard, the requirement of the regulation of company standard.To reach preceding aim, ability is used as Domain those of ordinary skill can determine that technical scheme is squeezed in specific examination with existing method, and can determine that hot fluid used is squeezed in examination The most lab scale of temperature range and hot fluid squeezes amount, maximum examination and squeezes amount.
The crowded hot fluid of the examination can also contain expansion-resisting agent or/and surfactant, and contained expansion-resisting agent should be able to Enough effectively reduction hot fluids enter clay swell caused by oil reservoir, and ensure that not anti-with chemical agent generation adverse chemical Should；Contained surfactant should be able to effectively reduce the interface of hot fluid and the grains of sand (or rock) in oil reservoir, crude oil Power, and ensure that not producing adverse chemical with the expansion-resisting agent, chemical agent reacts.To reach object defined above, this area is used as Those of ordinary skill can determine with existing method the expansion-resisting agent or/and the concrete composition of surfactant and its in hot-fluid Cmin, Cmax in body.
Open source information shows：Reservoir oil layer has the geological characteristics and anisotropism of complexity；Using quiet 35 blocks of east oil reservoirs as Example, Liaohe Oil Field open source information shows：Quiet 35 pieces of east oil reservoir interstitial space is mainly intergranular pore, and pore throat radius is 2.83 Micron, there is a small amount of corrosion hole and crack；Porosity type is that the uneven type of the thin larynx of hypertonic macropore oozes the uneven type of the thin larynx of macropore with, Pore radius is generally 5~50 microns, 13 microns of average out to；Reservoir pore throat uniformity coefficient is 0.342, and anisotropism is serious, storage The layer general 17-24% of porosity, permeability is generally 200~2000 × 10-3um2, permeability variation scope is up to more than 10 times；It is raw It is 50~150 meters, 24 meters of oil reservoir average thickness, 0.1~8 meter of individual layer core intersection, the individual well oil reservoir number of plies 3~25 to produce well section length Layer, average 3.1 meters of mudstone foundation thickness has a small amount of gas enclosure layer and water trapping layer, and most of well has more than 1 layer oil-water common-layer；Therefore, It is same also for allowing chemical agent more uniformly to enter in order to prevent chemical agent largely enters hypertonic pervious bed from causing chemical agent to waste In the different permeability positions of different permeability oil reservoirs or same oil reservoir in oil well or/and water injection well, hole, and ensure chemistry Agent and hot fluid can be added smoothly in oil reservoir, it is necessary to first be squeezed before chemical agent and hot fluid are added into oil reservoir to oil reservoir pilot scale Hot fluid.
Further, chemical agent is wasted in order to prevent chemical agent from largely entering high permeability water layer, makes chemical agent more Entrance oil reservoir in, first add organic solvent into oil reservoir, then add into oil reservoir chemical agent and hot fluid, it is (or molten to melt Change) asphalitine phase in oil reservoir, the asphalitine phase Precipitation Temperature of oil reservoir Crude Oil is reduced, makes the smooth seepage flow of the crude oil in oil reservoir extremely Oil well, then allows crude oil to rise to ground from oil well；
The organic solvent should be water insoluble, should be able to form effective when being contacted with the water in water layer or/and oil reservoir Liquid-liquid interface, the interfacial tension that should be able to be formed using the liquid-liquid interface effectively hinders chemical agent to enter in water layer, and Meet the countries concerned's standard or professional standard or company standard regulation in the application added to oil reservoir with requiring.It is foregoing to reach Purpose, the concrete composition or material kind of the organic solvent are can determine as those of ordinary skill in the art with existing method Class, minimum addition, maximum adding quantity.
Open source information shows：Water and water insoluble organic solvent such as oil, can form oil-water interface, produce interface Power；Because the space pore throat in oil reservoir belongs to capillary category, relevant calculate may indicate that；Produced in oil-water interface therein Raw interfacial tension or capillary force is very big, can effectively hinder have oil-water interface displacement in capillary；Therefore, it is described to have Machine solvent can form effective liquid-liquid interface when being contacted with the water in water layer or/and oil reservoir, and utilize the liquid-liquid interface institute The interfacial tension of formation effectively hinders chemical agent to enter in water layer.
Further, crude oil seepage flow resistance is increased in order to prevent hot fluid from causing the clay swell in oil reservoir, to oil reservoir Middle addition chemical agent, expansion-resisting agent and hot fluid, to melt the asphalitine phase in (or dissolving) oil reservoir, reduce the drip of oil reservoir Crude Oil Blue or green matter phase Precipitation Temperature, reduction hot fluid adds clay swell caused by oil reservoir, makes the smooth seepage flow of the crude oil in oil reservoir to oil Well, then allows crude oil to rise to ground from oil well；
Expansion-resisting agent, then addition chemical agent and hot fluid into oil reservoir can also be first added into oil reservoir.
The expansion-resisting agent can effectively reduce hot fluid and add clay swell caused by oil reservoir, and ensure that it is adding oil reservoir Application in meet regulation and the requirement of the countries concerned's standard or professional standard or company standard.To reach preceding aim, make The concrete composition of the expansion-resisting agent, specific type of merchandize, energy can be determined for those of ordinary skill in the art using existing method Enough determine that the expansion-resisting agent adds the specific Adding Way of oil reservoir and adds the technical schemes such as order with chemical agent, hot fluid, and It can determine its minimum addition, maximum adding quantity.
Open source information shows：Potassium chloride in sylvite belongs to expansion-resisting agent category, does not produce adverse chemical with surfactant Reaction.
Further, in order to improve the sweep efficiency of formation pressure and hot fluid, first added into oil reservoir special gas or Foam solution, then chemical agent and hot fluid are added into oil reservoir, to melt in the asphalitine phase in (or dissolving) oil reservoir, reduction oil reservoir The asphalitine phase Precipitation Temperature of crude oil, makes the smooth seepage flow of the crude oil in oil reservoir to oil well, then allows crude oil to rise to ground from oil well Face；
Chemical agent, then addition special gas or foam solution and hot fluid into oil reservoir can also be first added into oil reservoir；
Special gas or bubble can also be added into oil reservoir while chemical agent or/and hot fluid are added into oil reservoir Foam liquid；
Special gas or bubble can also be added into oil reservoir after addition chemical agent or/and hot fluid are finished into oil reservoir Foam liquid.
Described foam solution refers to：The foam solution being made up of special gas and foaming agent, water, described foaming agent is preferably non- Ionic surface active agent；
Described addition special gas or foam solution into oil reservoir refers to：Special gas or foam solution are added into oil reservoir Process and method, is the maturation process method commonly used during oil extraction in oil field is produced.
The special gas or foam solution should be able to effectively improve the sweep efficiency of formation pressure and hot fluid, should ensure that not with The chemical agent produces adverse chemical reaction, and meets in the application added to oil reservoir the countries concerned's standard, professional standard, enterprise The regulation requirement of industry standard.To reach object defined above, it be can determine as those of ordinary skill in the art with existing method described The concrete component of special gas or foam solution, specific species, addition temperature, minimum add pressure, the maximum pressure, minimum of adding and added Enter amount, maximum adding quantity, can determine specific method, the concrete technical scheme of the foam solution formation.
Open source information shows：It is the ripe work commonly used during oil extraction in oil field is produced that special gas or foam solution are added into oil reservoir Process, each can independently carry out or combine progress, the foam solution can effectively improve hot fluid sweep efficiency (referring to The 1st printing July the 1st edition in 2007 of publishing house of University of Petroleum《Oilfield chemistry》" due to bubble described in the row of inverse the 10th of page 118 The viscosity of foam is more than water, so it has the sweep efficiency more than water "), the special gas can effectively improve formation pressure；Cause This, first adds special gas or foam solution into oil reservoir, then adds chemical agent and hot fluid into oil reservoir, would be even more beneficial to crude oil The exploitation of seepage flow and thick oil type oil deposit.
Open source information shows：Anion surfactant met with cationic surfactant can produce precipitation etc. it is bad Chemical reaction, if the chemical agent contains anion surfactant, the foam solution cannot live containing cationic surface Property agent, vice versa.
Further, in order to improve formation pressure, the inert gas releasing agent aqueous solution is first added into oil reservoir, then to oil reservoir Middle addition chemical agent and hot fluid, to melt the asphalitine phase in (or dissolving) oil reservoir, reduce the asphalitine phase of oil reservoir Crude Oil Precipitation Temperature, improves formation pressure, makes the smooth seepage flow of the crude oil in oil reservoir to oil well, then allow crude oil to rise to ground from oil well Face；
Chemical agent, then addition inert gas releasing agent and hot fluid into oil reservoir can also be first added into oil reservoir；
The inert gas releasing agent refers to：Urea, ammonium carbonate, ammonium hydrogen carbonate, one kind of ammonium nitrate or ammonium nilrite or Person is the mixture of two or more arbitrary proportion mixture between them；
In the hot environment at 200 DEG C or oil reservoir gentle heat should be able to occur for the described inert gas releasing agent aqueous solution Decomposition reaction, discharges inert gas, and meets in the application for adding oil reservoir the countries concerned's standard, professional standard, enterprise's mark Accurate regulation and requirement.To reach preceding aim, it can be determined as those of ordinary skill in the art with existing method described lazy The concrete composition of property gas release agent, can determine Cmin, the Cmax of the inert gas releasing agent aqueous solution, energy Enough determine minimum addition, maximum adding quantity that the inert gas releasing agent aqueous solution added in oil reservoir；
The maximum level of ammonium nilrite and/or ammonium nitrate contained by the inert gas releasing agent aqueous solution is no more than 5%, the ammonium nilrite and/or ammonium nitrate sterling maximum adding quantity added in oil reservoir is no more than 10 tons.To reach foregoing mesh Mark, as those of ordinary skill in the art can be determined with existing method the inert gas releasing agent contain ammonium nilrite and/ Or maximum level, the minimum content of ammonium nitrate, and can determine that the inert gas containing ammonium nilrite and/or ammonium nitrate is released Put the maximum adding quantity of agent, minimum addition；
Described hot fluid can also contain inert gas releasing agent and/or expansion-resisting agent；
Described chemical agent can also contain inert gas releasing agent, can also be free of inert gas releasing agent；
Open source information shows：The reaction when heated of ammonium nilrite crystal is accelerated, and can be exploded when more than 60 DEG C；Ammonium nitrate Ammonium nilrite can be resolved into more than 110 DEG C；Therefore, the ammonium nilrite of concentration more than 10%, aqueous ammonium nitrate solution have danger Dangerous, relevant oilfield enterprise's standard regulation can be violated with requiring by being added into oil reservoir, be not belonging to indifferent gas of the present invention Body releasing agent category.
Further, in order to improve the viscosity of crude in formation pressure, reduction oil reservoir using liquid carbon dioxide, first to oil Specialty Chemical agent is added in layer, then adds into oil reservoir liquid carbon dioxide, then adds into oil reservoir hot fluid, to melt (or Dissolve) asphalitine phase in oil reservoir, the asphalitine phase Precipitation Temperature of oil reservoir Crude Oil is reduced, makes the smooth seepage flow of the crude oil in oil reservoir To oil well, then crude oil is allowed to rise to ground from oil well；
Liquid carbon dioxide can also be added into oil reservoir while chemical agent or/and hot fluid are added into oil reservoir；
Chemical agent (or Specialty Chemical agent) can also be being added into oil reservoir or/and while hot fluid, into oil reservoir or/ With special gas is added in hot fluid；
The harm that cooling is produced is vaporized in oil well, oil reservoir in order to reduce liquid carbon dioxide, can also be first into oil reservoir Hot fluid is added, oil well and reservoir temperature, then addition liquid carbon dioxide and chemical agent into oil well is improved, then add into oil well Enter hot fluid；
, can also be first with special gas by liquid in order to prevent hot fluid is contacted with liquid carbon dioxide from being frozen in oil well In carbon dioxide push-in oil reservoir, then addition Specialty Chemical agent and hot fluid into oil well；
Foam solution can also be added into oil reservoir or/and in hot fluid while hot fluid is added into oil reservoir；
The Specialty Chemical agent refers to：Freezing point is less than 0.5% chemical agent less than -18 DEG C, water content；
The liquid carbon dioxide, Specialty Chemical agent can also be added in oil well or water injection well simultaneously with arbitrary proportion；
The liquid carbon dioxide is commodity；
The liquid carbon dioxide should be able to effectively improve formation pressure, effectively reduction oil reservoir in viscosity of crude, and to Meet the countries concerned's standard, professional standard, the requirement of the regulation of company standard in the application that oil reservoir is added.To reach object defined above, The minimum pressure, most greatly of adding of the liquid carbon dioxide is can determine with existing method as those of ordinary skill in the art Enter pressure, minimum addition, maximum adding quantity.
The 1st printing July the 1st edition in 2007 of publishing house of University of Petroleum《Oilfield chemistry》The 13rd row of page 134 shows： " carbon dioxide soluble makes oily viscosity reduction in oil "；Therefore, liquid carbon dioxide, chemical agent and hot fluid are added into oil reservoir, will more Be conducive to the exploitation of crude oil seepage flow and thick oil type oil deposit.
Further, in order to more effectively reduce asphalitine phase Precipitation Temperature of the crude oil in oil reservoir, first add into oil reservoir Enter peroxide aqueous solution, then addition chemical agent and hot fluid into oil reservoir oil reservoir；
First chemical agent, then addition peroxide aqueous solution and hot fluid into oil reservoir can also be added to oil reservoir；
Described peroxide refers to：Performic acid, cumyl peroxide, dibenzoyl peroxide, methyl ethyl ketone peroxide, Peroxidized t-butyl perbenzoate, cyclohexanone peroxide, tertbutanol peroxide, cumyl hydroperoxide, hydrogen peroxide, peroxidating The mixing of any one or two or more any arbitrary proportion of sodium, carbamide peroxide, sodium peroxydisulfate or SODIUM PERCARBONATE Thing.
The peroxide aqueous solution maximum concentration is no more than 3%；
Described peroxide can guarantee that it can decomposite free oxygen in oil reservoir or can destroy asphaltene molecules, wax point Sub- carbochain can crush the brilliant structure of asphalitine phase, wax, and it should meet in chemical agent and/or hot fluid application is added to has Close national standard, professional standard, the requirement of the regulation of company standard.To reach object defined above, those of ordinary skill in the art are used as The concrete composition, minimum addition, maximum adding quantity of the peroxide are can determine with existing method.
Open source information shows：The peroxide has strong oxidisability, can effectively crush asphalitine phase, wax brilliant Structure, can be reacted by the micro heavy ionic catalysis in oil reservoir；Therefore, the peroxide aqueous solution tool of concentration more than 5% Dangerous property, relevant oilfield enterprise's standard regulation can be violated with requiring by being added into oil reservoir.
Laboratory test shows：The peroxide aqueous solution of content 2% is added in quiet 35 pieces of east oil well crude oils, can be by More than 1 DEG C of the low crude oil asphaltenes phase Precipitation Temperature.
Further, in order to which the chemical agent of nonfluid shape is added in oil reservoir, first with existing method by the nonfluid shape Chemical agent be made temperature be less than or equal to hot fluid temperature liquid (or emulsion, suspension), then again into oil reservoir plus Enter the liquid (or emulsion, suspension) and hot fluid, to melt the asphalitine phase in (or dissolving) oil reservoir, reduction oil reservoir Central Plains The asphalitine phase Precipitation Temperature of oil, makes the smooth seepage flow of the crude oil in oil reservoir to oil well, relief crude oil rises to ground from oil well；
The chemical agent of described nonfluid shape refers to the chemical agent in solid content under construction temperature at the scene；
Described fluid temperature should have good mobility less than or equal to hot fluid temperature and at such a temperature, as Those of ordinary skill in the art can determine the temperature that is made of the liquid (or emulsion, suspension) using existing method, and It can determine whether it needs insulation and corresponding insulation or tracing thermal-insulating technical scheme.
In order to solve the above technical problems, a kind of exploitation method of thick oil type oil deposit of the invention, comprises the following steps：
By oil well or/and the water filling casing or/and oil pipe of oil recovery production can be carried out, near wellbore zone oil reservoir plus Enter 1-10 tons of chemical agents and 10-100 tons of hot fluids, to release near wellbore zone oil layer blocking, enable the crude oil in oil reservoir deep Smooth seepage flow enters oil well or/and can carry out the water injection well of oil recovery production, then allows with existing method crude oil from oil well or/and can Ground is risen in the water injection well for carrying out oil recovery production；
Further, by oil well or/and the water filling casing or/and oil pipe of oil recovery production can also can be carried out, to Added in the oil reservoir of near wellbore zone the methyl naphthalene being in a liquid state under 1-10 tons of normal temperature, methyl naphthalene liquid, extraordinary organic liquid it is any one Kind or the mixture and 50-10000 standard cubic meter special gases of the mixing of two or more arbitrary proportion, use extraordinary gas The mixture is pushed into oil reservoir by body, to release near wellbore zone oil layer blocking, the smooth seepage flow of crude oil in oil reservoir deep is entered Oil well or/and the water injection well that oil recovery production can be carried out, then allow crude oil from oil well with existing method or/and oil recovery life can be carried out Ground is risen in the water injection well of production；
Further, chemical agent and hot fluid can also add oil reservoir behind ground or the mixing of oil well casing or/and oil pipe In；
The surface temperature of the chemical agent should be higher than that 25 DEG C, can be added before hot fluid in oil reservoir；
Described hot fluid surface temperature should be higher than that 80 DEG C, add oil well casing or/and oil pipe flow should be greater than 5 tons/ Hour；
Described chemical agent or/and hot fluid can also be no more than 50% expansion-resisting agent containing 1-10 tons of valid density.
The chemical agent and hot fluid should be able to synergy, the asphalitine for effectively melting or dissolving near wellbore zone is equal organic Thing, and the rule of the countries concerned's standard or professional standard or company standard should be met in the application added near wellbore zone oil reservoir Fixed and requirement.To reach preceding aim, the chemical agent can be determined using existing method as those of ordinary skill in the art Concrete composition, species, can determine preferable temperature, the maximum temperature of the chemical agent, hot fluid on ground.
The asphalitine phase fusion temperature in oil reservoir can be effectively reduced due to chemical agent of the present invention and hot fluid, the two Synergy can effectively melt the asphalitine phase in (or dissolving) oil reservoir；Due to the methyl being in a liquid state under normal temperature of the present invention The mixture of any one or the mixing of two or more arbitrary proportion of naphthalene, methyl naphthalene liquid, extraordinary organic liquid can Solidification will not be formed after effective melting asphalt matter phase, and entrance oil reservoir；Therefore those of ordinary skill in the art are according to institute of the present invention Technical scheme and experimental data are stated it can be anticipated that it releases the effect of the equal Organic Material Blocking oil reservoir of adjacent to oil well area asphalitine.
Further, clogging deposits oil is produced in order to prevent described hot fluid incompatible with the water chemistry in oil reservoir Layer hole, either in order to prevent described hot fluid serious scale or in order to anti-in oil well or/water injection well or/and oil reservoir Only described hot fluid serious scale in heat temperature raising equipment installation, is first carried out hot fluid before heating or/and after heating Scale control treatments, are then added in oil well or/water injection well or/oil reservoir；
The hot fluid should ensure that it is mixed with the water in oil reservoir after being handled will not produce clogging deposits oil reservoir Hole, will not in oil well or/water injection well, equipment, pipeline, oil reservoir serious scale.To reach object defined above, the common skill in this area Art personnel can determine the concrete technical scheme that scale control treatments are carried out to hot fluid.
Further, the hot fluid can be before oil well and/or water injection well and/or/oil reservoir be added with existing heating side Method is heated to 110~200 DEG C, to improve or keep hot fluid temperature, such as with heating stove heat, electrical heating method, Electromagnetic Heating Method, microwave (or ultrasonic wave) heating means；Heat the preferred biomass energy of fuel used in stove heat, natural gas, compress natural Gas, coal.
Further, the hot fluid can be after oil well and/or water injection well and/or/oil reservoir be added with existing heating side Method is heated to 110~200 DEG C, to improve or keep hot fluid temperature, such as with wellbore electric heating method, kelvin effect electrical heating side Method, shaft bottom electrical heating method, pit shaft or shaft bottom electromagnetic heating method, pit shaft or shaft bottom microwave (or ultrasonic wave) heating means.
Further, in order to keep the chemical agent to be in a liquid state when adding oil well and/or water injection well or/and oil reservoir, institute Stating chemical agent can be before or after oil well and/or water injection well be added with the heating of existing heating means, to improve or keep chemistry Agent temperature and its mobility；The chemical agent should meet the countries concerned's standard, professional standard, enterprise when being heated with existing heating means The requirement of industry standard, specific heating means can be determined as those of ordinary skill in the art with existing method.
Further, in order to ensure smoothly to add chemical agent and hot fluid into oil reservoir, well-flushing, drifting, replacing are first carried out The operation preliminary preparation such as tubing string, maintenance, then addition chemical agent and hot fluid into oil reservoir；
Described well-flushing refers to：Cleaned with water or hot fluid, replace oil well or/and injection well tubing, sleeve pipe Crude Oil Comprehensive sex work, belongs to the maturation process method commonly used in oil extraction in oil field production or action；
Described drifting refers to：With gauguste cutter dredging oil well or/and water filling casing, oil pipe etc. be any or comprehensive work Make, belong to the maturation process method commonly used in oil extraction in oil field production or action；
Described replacing tubing string refers to：Change oil pipe, sucker rod, oil well pump, downhole tool of oil well or/and water injection well etc. Any or comprehensive sex work, belongs to the maturation process method commonly used in oil extraction in oil field production or action；
Described maintenance refers to：Oil well or/and water injection well, oil pumper and its wellsite facility, flow, facility are appointed One or comprehensive sex work, belongs to the maturation process method commonly used in oil extraction in oil field production or action；
Described operation preliminary preparation, which should ensure that into oil reservoir, smoothly adds chemical agent and hot fluid, and meets and have Close national standard, professional standard, the requirement of the regulation of company standard.To reach object defined above, those of ordinary skill in the art are used as Particular content, the concrete technical scheme of the operation preliminary preparation are can determine with existing method.
Further, crude oil seepage flow resistance is increased in order to prevent the hot fluid from causing the clay swell in oil reservoir, institute The hot fluid stated can also contain expansion-resisting agent；
The expansion-resisting agent should be able to effectively prevent hot fluid caused clay swell in oil reservoir.To reach object defined above, make The concrete composition of the expansion-resisting agent, specific type of merchandize can be determined using existing method for those of ordinary skill in the art, and It can determine minimum content of the expansion-resisting agent in hot fluid, maximum level.
Further, in order to improve the heat energy contained by the hot fluid and its temperature in oil reservoir, hot fluid is reduced Into the heat loss before oil reservoir, more effectively the asphalitine phase in fusing (or dissolving) oil reservoir, described hot fluid can also contain There is the heat energy releasing agent that can occur thermal chemical reaction；
Described heat energy releasing agent refers to：Nitrite or/and nitrate and ammonium chloride, urea, ammonium carbonate, ammonium hydrogen carbonate In any one or two or more mixing mixture.
Gentle and effective exothermic reaction can occur in the hot fluid for described heat energy releasing agent, discharge heat, energy Effectively improve the heat energy contained by the hot fluid and its enter the temperature of oil reservoir, and ensure that it should in addition oil reservoir with hot fluid Meet the countries concerned's standard, professional standard, company standard regulation in.To reach object defined above, ordinary skill is used as Personnel can determine the mutual proportioning composition between the concrete component and component of the heat energy releasing agent using existing method, can be true Determine minimum content of the heat energy releasing agent in hot fluid, maximum level, and can determine that the heat energy releasing agent is added in oil reservoir Minimum addition, maximum adding quantity.
The maximum level of the nitrite and/or nitrate in hot fluid is added in oil reservoir no more than 5% Nitrite and/or nitrate sterling maximum adding quantity are no more than 10 tons.To reach preceding aim, the common skill in this area is used as Art personnel can determine maximum level containing nitrite and/or nitrate in hot fluid, minimum content with existing method, and It can determine nitrite and/or the maximum adding quantity in nitrate addition oil reservoir, minimum addition；
Open source information shows：The reaction when heated of ammonium nilrite crystal in nitrite is accelerated, energy when more than 60 DEG C Enough blasts；Ammonium nitrate can resolve into ammonium nilrite more than 110 DEG C；Therefore, the ammonium nilrite of concentration more than 10%, ammonium nitrate The aqueous solution has danger, and relevant oilfield enterprise's standard regulation can be violated with requiring by being added into oil reservoir, be not belonging to the present invention Described inert gas releasing agent category.
Further, in order to more effectively improve formation pressure, the hot fluid can also contain inert gas releasing agent；
The inert gas releasing agent refers to：Urea, ammonium carbonate, ammonium hydrogen carbonate, one kind of ammonium nitrate or ammonium nilrite or Person is the mixture of two or more arbitrary proportion mixture between them；
It is anti-that in the hot environment at 200 DEG C or oil reservoir gentle thermal decomposition should be able to occur for described inert gas releasing agent Should, discharge inert gas, and meet in the application for adding oil reservoir the rule of the countries concerned's standard, professional standard, company standard Fixed and requirement.To reach preceding aim, the inert gas can be determined with existing method as those of ordinary skill in the art The concrete composition of releasing agent, can determine Cmin, Cmax of the inert gas releasing agent in hot fluid, and energy Enough determine minimum addition, maximum adding quantity that the inert gas releasing agent added in oil reservoir；
The maximum level of the ammonium nilrite and/or ammonium nitrate in hot fluid is added in oil reservoir no more than 5% Ammonium nilrite and/or ammonium nitrate sterling maximum adding quantity are no more than 10 tons.To reach preceding aim, the common skill in this area is used as Art personnel can determine maximum level containing ammonium nilrite and/or ammonium nitrate in hot fluid, minimum content with existing method, and It can determine ammonium nilrite and/or the maximum adding quantity in ammonium nitrate addition oil reservoir, minimum addition；
Open source information shows：The reaction when heated of ammonium nilrite crystal is accelerated, and can be exploded when more than 60 DEG C；Ammonium nitrate Ammonium nilrite can be resolved into more than 110 DEG C；Therefore, the ammonium nilrite of concentration more than 10%, aqueous ammonium nitrate solution have danger Dangerous, relevant oilfield enterprise's standard regulation can be violated with requiring by being added into oil reservoir, be not belonging to indifferent gas of the present invention Body releasing agent category.
Further, it is described in order to reduce interfacial tension of the hot fluid in oil reservoir between crude oil, rock, sand grains Hot fluid can also contain surfactant (or surfactant liquids)；
Described surfactant should be able to effectively reduce the interfacial tension between hot fluid and crude oil, rock, sand grains, should ensure that It does not produce adverse chemical reaction with the chemical agent, and ensures what the hot fluid containing surfactant was added to oil reservoir Meet the countries concerned's standard, professional standard, the requirement of the regulation of company standard in.To reach preceding aim, this area is used as Those of ordinary skill can determine the concrete composition of the surfactant, particular type with existing method, and can determine institute State minimum content of the surfactant in hot fluid, maximum level；
Open source information shows：Anion surfactant met with cationic surfactant can produce precipitation etc. it is bad Chemical reaction, if the chemical agent contains anion surfactant, the surfactant and containing the surfactant Hot fluid cannot contain cationic surfactant, and vice versa.
Further, in order to more effectively reduce asphalitine phase Precipitation Temperature, the viscosity of crude oil, the chemical agent and/or Hot fluid can also be no more than 5% peroxide containing concentration.
Described peroxide refers to：Performic acid, cumyl peroxide, dibenzoyl peroxide, methyl ethyl ketone peroxide, Peroxidized t-butyl perbenzoate, cyclohexanone peroxide, tertbutanol peroxide, cumyl hydroperoxide, hydrogen peroxide, peroxidating The mixing of any one or two or more any arbitrary proportion of sodium, carbamide peroxide, sodium peroxydisulfate or SODIUM PERCARBONATE Thing.
When described chemical agent contains peroxide, it is impossible to contain high molecular surfactant and polymer.
Described peroxide should be able to decomposite free oxygen in oil reservoir or can destroy asphaltene molecules, wax molecule carbon chain Or can crush the brilliant structure of asphalitine phase, wax, should be be added to chemical agent and/or hot fluid and add should in the application of oil reservoir Meet the countries concerned's standard, professional standard, the requirement of the regulation of company standard.To reach object defined above, the common skill in this area is used as Art personnel can determine whether the peroxide can or allow to add the chemical agent and/or hot fluid with existing method In, it can determine the concrete composition of the peroxide and its contain in the chemical agent and/or hot fluid minimum content, maximum Amount, and can determine minimum, maximum that the peroxide is added in oil reservoir.
Open source information shows：The peroxide has strong oxidisability, can effectively crush asphalitine phase, wax brilliant Structure, can be reacted by the micro heavy ionic catalysis in oil reservoir；Therefore, the peroxide aqueous solution tool of concentration more than 5% Dangerous property, relevant oilfield enterprise's standard regulation can be violated with requiring by being added into oil reservoir.
Laboratory test shows：The peroxide aqueous solution of content 2% is added in quiet 35 pieces of east Reservoir Crude Oils, can be by Low 1 DEG C of crude oil wax precipitation temperature, and its viscosity more than 10% can be reduced.
The present invention has the advantages that：The present invention can effectively solve the problem that asphalitine of the crude oil in oil reservoir is mutually separated out and ask Topic, can effective heavy crude producing type oil reservoir, thick oil type oil deposit cost of winning is greatly reduced, extends the oil well production cycle, increase is oily Well production, improves oil reservoir ultimate recovery, and implements easy, safe and reliable, remarkable in economical benefits.
Embodiment
Embodiment 1
A kind of exploitation method of thick oil type oil deposit, comprises the following steps：Chemical agent and hot fluid are added into oil reservoir, they melt The asphalitine phase and wax changed in oil reservoir are brilliant, while the asphalitine phase Precipitation Temperature and wax precipitation temperature of oil reservoir Crude Oil are reduced, Make the smooth seepage flow of the crude oil in oil reservoir to oil well, crude oil is then promoted to ground from oil well.
The chemical agent is mixed methylnaphthalene；The hot fluid is 95~100 DEG C of oilfield sewages.
By taking the Jing35-31-41Jing application present invention as an example：
The open source information of Liaohe Oil Field shows：Jing35-31-41Jing belonged to quiet 35 pieces of east oil wells, on May 16th, 1994 It is constructed and put into operation, because Liquid output is low, aqueous high closing well, drives a well again in October, 2006, the daily output ton per day of liquid 1-2, aqueous 100%, Accumulative 190 tons of water of production, in June, 2007, cause oil reservoir feed flow deficiency can not be produced normally always, and using being driven a well every 2 days, oil recovery 12 is small When batch process, averagely produce the ton per day of liquid 0.7 daily, the average ton per day of day oil-producing 0.4 adds up to recover the oil in by the end of June, 2007 to 100 tons or so, produce 400 tons or so of liquid；
Production analysis and relevant calculating show：During the well opening well and making production, temperature of oil reservoir is already below asphalitine around it Phase Precipitation Temperature and wax precipitation temperature, separate out asphalitine phase in oil reservoir and wax is brilliant, analyse asphalitine phase and wax is brilliant serious stifled Oil reservoir seepage flow hole pore throat has been filled in, has caused reservoir permeability to be greatly reduced, the crude oil in oil reservoir is difficult to smooth seepage flow to oil well, from And causing oil reservoir feed flow not enough, oil well can not be produced normally, can only use Batch Process mode；
In order to improve the fluid supply capacity of oil reservoir, make the smooth seepage flow of the crude oil in oil reservoir to oil well, allow oil well normally to produce, should Well has carried out pilot production on June 27th, 2007 using the present invention, and its technical scheme is：First with high-pressure pump first to the casing Middle 20 tons of mixed methylnaphthalenes of squeezing (being commonly called as anti-squeeze), then squeeze and (are commonly called as anti-squeeze) 95~100 DEG C of oil fields into the casing again Mixed methylnaphthalene in sleeve pipe, is pushed into oil reservoir and is mixed with it in oil reservoir, utilize mixing by 600 tons of sewage using the sewage Methyl naphthalene and asphalitine phase and wax crystalline substance in joint synergy fusing (or dissolving) oil reservoir of 95~100 DEG C of oilfield sewages, drop The asphalitine phase Precipitation Temperature and wax precipitation temperature of low oil reservoir Crude Oil, while formation pressure is improved, to make the crude oil in oil reservoir Smooth seepage flow is to oil well.The crude oil entered in oil well is promoted to ground with the well and its existing oil production method again；
Open source information shows：20 DEG C of density of mixed methylnaphthalene are more than water, therefore after being added into oil well casing, Neng Gouyong Sewage is pushed it into oil reservoir；
Laboratory test and open source information show：The asphalitine phase fusion temperature of the well crude oil sample is 58 DEG C, dewaxing temperature For 55 DEG C, asphalitine phase Precipitation Temperature is 45 DEG C；Mixed methylnaphthalene can melt paraffin grade wax or candle at 40 DEG C, normal in normal temperature Pressure can dissolve (or dissolving) commodity pitch and commodity road asphalt；10% is added in 40 DEG C of crude oil samples of the well and mixes first Base naphthalene, can reduce by 22 DEG C of the well crude oil freezing point, reduce by 11 DEG C of its wax precipitation temperature, reduce its 9 DEG C of asphalitine phase Precipitation Temperature, Illustrate that asphalitine phase and wax crystalline substance are effectively melted or dissolved by mixed methylnaphthalene at 40 DEG C；It can thus be appreciated that：Mixed methylnaphthalene energy It is enough that the dewaxing temperature of the well oil sample is down to 40 DEG C by 55 DEG C, 15 DEG C of dewaxing temperature is reduced, and can be by the pitch of the well oil sample Matter phase fusion temperature is down to 40 DEG C, 18 DEG C of reduction asphalitine phase fusion temperature by 58 DEG C；
Relevant calculating shows：95~100 DEG C of 600 tons of oilfield sewages are added in the well, radius 10 around the well can be made Rice in reservoir temperature improve more than 4 DEG C, it was maintained at more than 45 DEG C in 48 hours, higher than mixed methylnaphthalene fusing (or Dissolve) more than 5 DEG C of the brilliant temperature of asphalitine phase and wax；It can thus be appreciated that：95~100 DEG C of oilfield sewages can be molten for mixed methylnaphthalene Change (or dissolving) asphalitine phase and wax crystalline substance creates thermal condition；
Therefore, mixed methylnaphthalene and 95~100 DEG C of oilfield sewage joint synergies, can be 10 meters by radius around the well Asphalitine phase and wax the crystalline substance fusing (or dissolving) separated out in interior oil reservoir, effectively reduces freezing point, wax precipitation point, the asphalitine of its crude oil Phase Precipitation Temperature；
The well shows using technical scheme of the present invention opening well and making production after 7 days, actual tests detection：The well producing initial stage Actual 40 DEG C of viscosity of oil sample are 160mPa.S, viscous less than 50% of 50 DEG C of original viscosities described in the open source information of Liaohe Oil Field, 50 DEG C Spend for 30mPa.S, less than 9% of 50 DEG C of original viscosities described in the open source information of Liaohe Oil Field, wax precipitation temperature is 32 DEG C, compares Liaohe Oil-bearing Quiet 35 pieces of eastern oil wax precipitation temperatures are 42 DEG C low 10 DEG C described in the open source information of field, and asphalitine phase Precipitation Temperature is 34 DEG C, than experiment Preceding asphalitine phase Precipitation Temperature is low 11 DEG C；40 DEG C of viscosity of actual oil sample when the well is produced 6 months are 280mPa.S, less than the Liao Dynasty The 78% of 50 DEG C of original viscosities described in the open source information of river oil field, 50 DEG C of viscosity are 150mPa.S, less than Liaohe Oil Field open source information The 42% of 50 DEG C of original viscosities, wax precipitation temperature is 35 DEG C, quiet 35 pieces of eastern oils analysis than described in the open source information of Liaohe Oil Field Wax temperature is 42 DEG C low 7 DEG C, and asphalitine phase Precipitation Temperature is 36 DEG C, lower 9 DEG C than asphalitine phase Precipitation Temperature before experiment；The well is given birth to 40 DEG C of viscosity of crude of actual oil sample when producing 12 months are 490mPa, and 50 DEG C of viscosity of crude is 260mPa.S, still less than the Liaohe River The 78% of 50 DEG C of original viscosities described in the open source information of oil field, wax precipitation temperature is 40 DEG C, quiet 35 than described in the open source information of Liaohe Oil Field Block eastern oil wax precipitation temperature is 42 DEG C low 2 DEG C, and asphalitine phase Precipitation Temperature is 40 DEG C, than the asphalitine phase Precipitation Temperature before experiment It is low 5 DEG C；
The mill trial results show：The well is used after technical scheme of the present invention, and oil reservoir seepage flow fluid supply capacity is obtained Greatly improve, effect of increasing production is extremely notable, effective time has exceeded 12 months；0.7 ton day of the average Liquid output before testing increases 6.2 ton per days are added to, 0.4 ton per day of the oil production before testing increases to 1.9 ton per days；Add up production crude oil 750 during experiment Ton, adds up net 590 tons of incremental oil production；Deduct after 600 tons of waters that experiment is added, averagely have a net increase of the ton per day of liquid measure 5.5, have a net increase of production The ton per day of oil mass 1.5；Efficiently solve the problem that the well continuously can not have been produced normally since build up always.
Open source information shows：Acidifying, pressure break are maturation process method, either each it is independent still combined into OK, permeability, porosity and the percolation ability of oil reservoir can be effectively improved；And the productive experiment has shown that chemical agent and heat The asphalitine phase and wax that fluid can be effectively melted in (or dissolving) oil reservoir are brilliant, and the crude oil asphaltenes in reduction oil reservoir mutually separate out temperature Degree and wax precipitation temperature, viscosity；Therefore, first oil reservoir is acidified or/and pressure break, then addition chemical agent and hot-fluid into oil reservoir Body, will be easier the crude oil seepage flow in oil reservoir；Therefore, acidifying or/and pressure break are combined for thick with chemical agent and hot fluid The exploitation effect of oil type oil reservoir is expected.
Embodiment 2
Embodiment 1 is repeated, its difference is, before chemical agent and hot fluid is added into oil reservoir, first taken The operation preliminary preparation steps such as well-flushing, drifting, replacing tubing string, maintenance：
By taking the Jing35-32-41Jing application present invention as an example.
From the well data, the well belongs to quiet 35 pieces of east oil wells, and its crude oil freezing point is 37 DEG C, after oil well stops production its Crude oil in oil pipe, sleeve pipe may solidify or viscosity of crude is significantly increased and mobility extreme difference, so as to cause by oil well Sleeve pipe or oil pipe, which add chemical agent and the technical scheme of hot fluid into oil reservoir, to be implemented；Accordingly, can oil well stopping production after, With more than 80 DEG C of oilfield sewage well-flushing, 80 DEG C of oilfield sewages are added in the casing, then allow its come out from oil pipe into Enter in surface technology flow, so as to replace out by the crude oil in oil well oil conduit, sleeve pipe with oilfield sewage, you can allow by oil well Sleeve pipe or oil pipe add chemical agent into oil reservoir and the technical scheme of hot fluid is smoothly implemented；
There is heating wire in hollow rod and oil well pump, hollow stem due to having in the well oil pipe, between oil pipe and sleeve pipe Annular space may have packer, so if adding chemical agent and hot fluid meeting into oil reservoir because oil pumping by the well oil pipe The stop of pump standing valve and can not implement, can also because of between sucker rod and well head can not high pressure sealing and can not implement；And If adding chemical agent and hot fluid into oil reservoir by the casing, may have because of annular space between oil pipe and sleeve pipe Packer stops and can not implemented；Accordingly, it is necessary to solve accordingly to ask by described this operation preliminary preparation of replacing tubing string Topic, can just enable to add chemical agent into oil reservoir and the technical scheme of hot fluid is smoothly implemented；Because of operation preliminary preparation Belong to the maturation process method commonly used in oil extraction in oil field production, as those of ordinary skill in the art be fully able to it is expected and according to Existing method completes the operation preliminary preparation.
Embodiment 3
A kind of exploitation method of thick oil type oil deposit, comprises the following steps：In order to prevent once into oil reservoir add chemical agent and The drawbacks of hot fluid total amount is too big, chemical agent and hot fluid are added around oil well in oil reservoir, then allow chemical agent and hot fluid companion Be back to the oil well with the crude oil seepage flow in oil reservoir and ground risen to by the oil well, realize the chemical agent of oil reservoir around oil well- Hot fluid joint huff and puff oil recovery mode (or technique), by oil well, is added chemical agent and hot fluid with existing method (as pumped) Enter in the oil reservoir around the oil well, it is brilliant to melt asphalitine phase and wax in (or dissolving) oil reservoir, reduce the drip of oil reservoir Crude Oil Blue or green matter phase Precipitation Temperature and wax precipitation temperature, make crude oil and chemical agent in oil reservoir, the smooth seepage flow of hot fluid mixture be back to this Oil well, then ground is risen to by the oil well, to realize chemical agent-hot fluid joint huff and puff oil recovery mode of oil reservoir around oil well (or technique)；
The chemical agent-hot fluid joint huff and puff oil recovery mode (or technique) refers to：By oil well by chemical agent and hot-fluid Body is added in oil reservoir, then the crude oil seepage flow allowed in chemical agent, hot fluid and oil reservoir is back to the oil well and risen to by the oil well The oil production method (or technique) on ground；Will chemical agent and hot fluid to add in oil reservoir be " the gulping down " being commonly called as, allow chemical agent, hot-fluid It is " telling " for being commonly called as that crude oil seepage flow in body and oil reservoir, which is back to the oil well and rises to ground by the oil well,；
From hydrodynamics：Due to there is very high pressure in oil reservoir, oil is added from oil well by chemical agent and hot fluid Around well after oil reservoir, the pressure of oil reservoir around oil well can be increased；If the pressure in oil well is less than the original in formation pressure, oil reservoir Oil just can be to oil well seepage flow, and the chemical agent and hot fluid added in oil reservoir also being capable of seepage flow oil return well；And crude oil and chemical agent, Hot fluid can nature mixing during to oil well seepage flow；Therefore, by oil well, with existing method (as pump) by chemical agent And hot fluid is added in the oil reservoir around the oil well, it can realize that chemical agent-hot fluid of oil reservoir around oil well combines to handle up and adopt Oily mode (or technique)；
By taking D3-X7 wells application present invention as an example：
Described chemical agent is：The chemical agent mixing being made in 50% mixed xylenes is dissolved in by 50% polyacrylate Thing；
The hot fluid is：60~70 DEG C of clear water；
Open source information shows：D3-X7 wells belong to Fularchi Oilfield, and Fularchi Oilfield is located at Qiqihaer City, average 450 meters of buried depth, the sixties have just verified nearly 20,000,000 tons of oil in place, but verify in decades always using steaming Vapour huff and puff oil recovery technique carries out pilot development, and the economic value of crude oil is produced by the cost for oil production of the DP technology has exceeded, Cause the oil field to never have commercial development value, verify certainly and start and get down from horse for several times in decades, can not obtain always effectively Exploitation；
D3-X7 wells belong to Fularchi Oilfield production well, can not with common oil production method after in September, 2007 is built up Produce crude oil；Using steam oil production method, 350 DEG C of 1100 tons of high-temperature steams are injected to oil reservoir, theoretical calculation is shown to be this Need to burn up 66 tons of fuel oil, it is actual to use 70 tons of fuel oil；Normal production 2 months of recovering the oil, adds up 200 tons of Liquid output after steam injection, Accumulative 60 tons of crude oil extraction, produces crude oil and is not enough to offset the fuel oil that steam injection consumes burning；Therefore, the well is gulped down with steam Telling thermal recovery technology does not have any economic value, and the well stops using the steam soak thermodynamic oil extraction process mode of production then, and closing well leaves unused；
It is actually detected to show：20 DEG C of reservoir temperature around the well, produce 20 DEG C of viscosity 11000mP.s of crude oil sample, containing glue Matter asphalitine 32%, paraffin content 21%, 23 DEG C of wax precipitation temperature, 27 DEG C of asphalitine phase Precipitation Temperature；Therefore, oil reservoir temperature around the well Degree is less than asphalitine phase Precipitation Temperature and wax precipitation temperature, and crude oil has separated out asphalitine phase in oil reservoir and wax is brilliant, is separated out Asphalitine phase and wax brilliant Severe blockage oil reservoir seepage flow hole, causes reservoir permeability to be greatly reduced, the crude oil in oil reservoir is difficult to Smooth seepage flow is to oil well, so as to cause oil reservoir feed flow difficult, oil well can not be produced normally；
In order to solve the feed flow difficult problem of oil reservoir around the well, make the smooth seepage flow of crude oil around the well in oil reservoir to oil Well, allows the oil well normally to produce, and the well has carried out pilot production in January, 2008 using the present invention, and its technical scheme is：First will 50% polyacrylate, which is dissolved in 50% mixed xylenes, is made chemical agent composition, then by the oil well casing, uses high pressure The oil that pump adds chemical 20 tons and 60~70 DEG C 500 tons of clear water of agent composition around the well according to the flow of 10-15 ton hours In layer, it is allowed to be mixed naturally with crude oil in oil reservoir, it is brilliant to melt asphalitine phase and wax in (or dissolving) oil reservoir, reduce oil reservoir The asphalitine phase Precipitation Temperature and wax precipitation temperature of Crude Oil, make crude oil and chemical agent, the smooth seepage flow of mixture of water in oil reservoir The oil well is back to, then ground is promoted to by the production well；
Laboratory test shows：The dewaxing temperature of the well crude oil sample is 28 DEG C, 30 DEG C of asphalitine phase fusion temperature；Describedization (or dissolving) commodity pitch and commodity road asphalt can be dissolved at 22 DEG C by learning agent composition；Add in 22 DEG C of crude oil samples of the well Enter chemical agent composition described in 10%, 10 DEG C of the well crude oil freezing point can be reduced, 8 DEG C of its wax precipitation temperature is reduced, reduce its drip Blue or green 10 DEG C of matter phase Precipitation Temperature, illustrate at 22 DEG C the chemical agent composition by the brilliant effectively fusing of asphalitine phase and wax (or Dissolve)；It can thus be appreciated that：The asphalitine phase fusion temperature of the well oil sample by 30 DEG C can be down to 22 by the chemical agent composition DEG C, its 8 DEG C of asphalitine phase fusion temperature is reduced, the dewaxing temperature of the well oil sample by 28 DEG C 22 DEG C can be down to, it is reduced and melts 6 DEG C of wax temperature；
Relevant calculating shows：60~70 DEG C of 500 tons of clear water are added in the well, can be made around the well in 12 meters of radius Reservoir temperature improves more than 5 DEG C, it was maintained at more than 25 DEG C in 48 hours, higher than the chemical agent composition fusing (or Dissolve) more than 3 DEG C of the brilliant temperature of asphalitine phase and wax；It can thus be appreciated that：60~70 DEG C of clear water can be the chemical agent composition Melt (or dissolving) asphalitine phase and wax crystalline substance creates thermal condition；
Therefore, the chemical agent composition and 60~70 DEG C of clear water joint synergies, can be by radius 12 around the well Asphalitine phase and wax the crystalline substance fusing (or dissolving) separated out in rice in oil reservoir, effectively reduces the freezing point of its crude oil, wax precipitation point, pitch Matter phase Precipitation Temperature；
The well shows using technical scheme of the present invention opening well and making production after 3 days, actual tests detection：The well produces 3 20 DEG C of viscosity of crude 150mP.s of actual oil sample during the moon, are the 1.4% of the well crude oil original viscosity, and wax precipitation temperature is 15 DEG C, than Its original wax precipitation temperature reduces by 8 DEG C, and asphalitine phase Precipitation Temperature is 16 DEG C, than its fossil bitumen matter phase Precipitation Temperature reduction by 11 DEG C, reservoir temperature around the well is below, therefore reservoir temperature will not separate out asphalitine phase again around the well and wax is brilliant.
The well applies normal production 6 months after technical scheme of the present invention, adds up Liquid output 500 in by the end of July, 2008 to Ton, adds up 300 tons of crude oil extraction, economic benefit is extremely notable.
The practice of construction as shown by data of the well：With high-pressure pump according to the flow of 10-15 ton hours by chemical agent composition 20 When ton and 60~70 DEG C of 500 tons of clear water are added in the oil reservoir around the well, its well head maximum pressure is 5-7MPa, even if on calculating Maximum pressure in head of liquid in oil well, the well oil reservoir is also not up to 13MPa；And the open source information of Fularchi Oilfield Show：The fracture pressure of the underground oil reservoir is more than 20MPa；Therefore, it will be changed according to the flow of 10-15 ton hours with high-pressure pump When 20 tons and 60~70 DEG C 500 tons of clear water of agent composition are added in the oil reservoir around the well, it will not press and wear the well oil reservoir, will not Crude oil pushing tow in oil reservoir is entered in non-oil reservoir.
The data of Fularchi Oilfield open source information and the well shows：D3-X7 wells oil pipe-casing annulus is not sealed Every device, oil reservoir buried depth is less than 1000 meters；Calculating shows, in the well when hot fluid is added in oil reservoir with the flow of 10-15 ton hours Temperature drop in annular space is not over 10 DEG C, therefore the well can directly utilize sleeve pipe (really between sleeve pipe and oil pipe Annular space) chemical agent and hot fluid are added in oil reservoir；It is costly because dynamic tubing string belongs to oil well operation category；Therefore, The well uses the construction method of fixed tubular column, can reduce operating expenses, saves cost for oil production, remarkable in economical benefits.
Embodiment 4
A kind of exploitation method of thick oil type oil deposit, comprises the following steps：In order to which the chemical agent of nonfluid shape is added in oil reservoir, The liquid that temperature is less than or equal to hot fluid temperature first is made in the chemical agent of the nonfluid shape, is then added again into oil reservoir The liquid and hot fluid, it is brilliant to melt asphalitine phase and wax in (or dissolving) oil reservoir, reduce the asphalitine phase of oil reservoir Crude Oil Precipitation Temperature and wax precipitation temperature, make the smooth seepage flow of the crude oil in oil reservoir to oil well, then are carried from oil well crude oil with existing method Rise to ground.
The chemical agent is 2- methyl naphthalenes；The hot fluid is 95~100 DEG C of oilfield sewages.
Described chemical agent fluid temperature should have good flowing less than or equal to hot fluid temperature and at such a temperature Property, the temperature that is made of the liquid can be determined using existing method as those of ordinary skill in the art, and can determine it Whether insulation and corresponding insulation or tracing thermal-insulating technical scheme are needed.
By taking the Zheng413Jing application present invention as an example.
The open source information of Shengli Oil Field shows：Zheng413Jing belongs to Shengli Oil Field Zhen411 block oil well, and indoor 50 DEG C of actual measurement takes off Gas viscosity 60000mPa.s, belongs to Extra-heavy oil reservoir, is constructed and put into operation in April, 2005, is adopted using hot gas thermodynamic oil extraction process of handling up Oil, 1500 tons of steam injection first adds up 176 tons of water of production, adds up 30 tons of oil-producing, and theoretical calculation shows that produced crude oil is not enough to counteracting Steam injection consumes the fuel oil of burning, therefore the well steam soak thermal recovery technology does not have any economic value, and the well stops then The steam soak thermodynamic oil extraction process mode of production is only used, closing well leaves unused.
It is actually detected to show：49 DEG C of reservoir temperature around the well, produce 50 DEG C of degassing viscosity 60000mPa.s of crude oil sample, 70 DEG C of asphalitine phase Precipitation Temperature；Therefore, reservoir temperature is less than 21 DEG C of asphalitine phase Precipitation Temperature around the well, and crude oil is in oil reservoir In separated out asphalitine phase, the asphalitine phase Severe blockage that is separated out oil reservoir seepage flow hole causes reservoir permeability significantly Crude oil in reduction, oil reservoir is difficult to smooth seepage flow to oil well, so as to cause oil reservoir feed flow difficult, oil well can not be produced normally；
In order to solve the feed flow difficult problem of oil reservoir around the well, make the smooth seepage flow of crude oil around the well in oil reservoir to oil Well, allows the oil well normally to produce, and the well has carried out pilot production in 2 months 2006 using the present invention, and its technical scheme is：First use 2- methyl naphthalenes are heated to 40 DEG C by the method for heating, and to be molten into liquid 2- methyl naphthalenes standby；Then high-pressure pump and 95~100 DEG C are used 50 tons of oilfield sewage cleans well oil, sleeve pipe and preheats its sleeve pipe stratum nearby, and 38 DEG C of temperature field is not less than to stratum foundation； Then squeeze and (be commonly called as anti-squeeze) 20 tons of 2- methyl naphthalenes and 95~100 DEG C of oilfield sewages 100 into the casing simultaneously with high-pressure pump Ton, keeps temperature of the temperature of 2- methyl naphthalenes in oil well casing to be higher than its freezing point, to prevent 2- methyl naphthalenes using the sewage Solidified in the casing；Then squeeze and (be commonly called as anti-squeeze) 95~100 DEG C of 650 tons of oilfield sewages into the casing again, utilize 2- methyl naphthalenes in sleeve pipe are pushed into oil reservoir and mixed with it in oil reservoir by the sewage, utilize 2- methyl naphthalenes and 95~100 DEG C Asphalitine phase and wax in joint synergy fusing (or dissolving) oil reservoir of oilfield sewage is brilliant, reduces the pitch of oil reservoir Crude Oil Matter phase Precipitation Temperature and wax precipitation temperature, while improving formation pressure, to make the smooth seepage flow of the crude oil in oil reservoir to oil well, then are used The crude oil entered in oil well is promoted to ground by the well and its existing oil production method.
From open source information：2- methyl naphthalene density ratios water is big, and calculating shows its 100 DEG C density and 100 DEG C of oil field dirts Water difference very little；It is a kind of Turbulence Flow state because oilfield sewage enters after oil well casing, can exists with liquid 2- methyl naphthalenes Constantly mix, therefore liquid 2- methyl naphthalenes can be pushed into oilfield sewage in oil reservoir in sleeve pipe.
Laboratory test and open source information show：The asphalitine phase fusion temperature of the well crude oil sample is 80 DEG C；2- methyl naphthalenes (or dissolving) commodity pitch and commodity road asphalt can be melted at 50 DEG C；The 2- of addition 10% in 50 DEG C of crude oil samples of the well Methyl naphthalene, can reduce by 24 DEG C of the well crude oil asphaltenes phase Precipitation Temperature, illustrate that 2- methyl naphthalenes are by asphalitine phase at 50 DEG C Effectively fusing (or dissolving)；It can thus be appreciated that：The asphalitine phase fusion temperature of the well oil sample can be down to by 2- methyl naphthalenes by 80 DEG C 50 DEG C, 30 DEG C of reduction asphalitine phase fusion temperature.
Calculating shows：95~100 DEG C of 650 tons of oilfield sewages are added in the well, can be made around the well in 10 meters of radius Reservoir temperature improve more than 5 DEG C, it was maintained at more than 54 DEG C in 48 hours, higher than 2- methyl naphthalenes fusing (or dissolving) drip More than 4 DEG C of the temperature of blue or green matter phase；It can thus be appreciated that：95~100 DEG C of oilfield sewages can melt (or dissolving) pitch for 2- methyl naphthalenes Matter mutually creates thermal condition.
Therefore, 2- methyl naphthalenes and 95~100 DEG C of oilfield sewage joint synergies, can be by 10 meters of radius around the well The asphalitine separated out in oil reservoir mutually melts (or dissolving), effectively reduces freezing point, the asphalitine phase Precipitation Temperature of its crude oil.
The well shows using technical scheme of the present invention opening well and making production after 3 days, actual tests detection：The well produces 2 50 DEG C of degassing viscosity of actual oil sample during the moon are 4500mPa.s, are the 7.5% of its original 50 DEG C of degassings viscosity, asphalitine is mutually analysed Go out temperature for 43 DEG C, it is lower 27 DEG C than its fossil bitumen matter phase Precipitation Temperature, it is lower than reservoir temperature around the well 6 DEG C, therefore at this Reservoir temperature will not separate out asphalitine phase around well；50 DEG C of actual oil sample degassing viscosity when the well is produced 4 months are 4900mPa.s, less than the 8.2% of its original 50 DEG C of degassings viscosity, asphalitine phase Precipitation Temperature is 45 DEG C, than its fossil bitumen matter Phase Precipitation Temperature is low 25 DEG C, lower than reservoir temperature around the well 4 DEG C, therefore reservoir temperature will not separate out asphalitine around the well Phase.
The mill trial results show：The well is used after technical scheme of the present invention, and oil reservoir seepage flow fluid supply capacity is significantly Improve, effect of increasing production is extremely notable, and effective time has reached 6 months, add up 1650 tons of Liquid output, add up 620 tons of crude oil extraction, Economic benefit is extremely notable；The problem that the well can not have been produced normally since build up always is efficiently solved, victory is efficiently solved The sharp block super heavy oil recovery difficult problem of oil field Zheng 411.
The practice of construction as shown by data of the well：Add into oil reservoir with the flow of 10-15 ton hours 95 with high-pressure pump~ There is not obvious lifting in 100 DEG C of oilfield sewages, the well mouth of oil well；Because the well casing programme belongs to thermal recovery structure design, because This, which implements technical solution of the present invention, will not produce the defect for damaging thermal recovery well wellbore and casing programme.
Embodiment 5
A kind of exploitation method of thick oil type oil deposit, comprises the following steps：In order to utilize chemical agent-hot fluid joint huff and puff oil recovery Oil well is controlled the oil extraction in oil reservoir to come out by mode (or technique), and then realizes the purpose of effective heavy crude producing type oil reservoir, First chemical agent is added in oil well with existing method (as pumped), hot fluid is then added into oil well with existing method (as pumped) In, chemical agent pushing tow to the oil well is controlled to the precalculated position of oil reservoir with hot fluid, to melt the pitch in (or dissolving) oil reservoir Matter phase and wax are brilliant, reduce the asphalitine phase Precipitation Temperature and wax precipitation temperature of oil reservoir Crude Oil, make crude oil and chemical agent in oil reservoir, The smooth seepage flow of hot fluid mixture is back to the oil well, then rises to ground by the oil well；Then these steps are repeated, by these Step cycle is carried out, and controls the oil extraction in oil reservoir to come out oil well；
The chemical agent-hot fluid joint huff and puff oil recovery mode (or technique) refers to：By oil well by chemical agent and hot-fluid Body is added in oil reservoir, then the crude oil seepage flow allowed in chemical agent, hot fluid and oil reservoir is back to the oil well and risen to by the oil well The oil production method (or technique) on ground；Will chemical agent and hot fluid to add in oil reservoir be " the gulping down " being commonly called as, allow chemical agent, hot-fluid It is " telling " for being commonly called as that crude oil seepage flow in body and oil reservoir, which is back to the oil well and rises to ground by the oil well,；
Described oil well control oil reservoir：Refer to centered on oil well, using oil well spacing half as the oil reservoir in radius, Also the oil reservoir controlled in well design control range is referred to, the design of its specific scope, index etc. is the conventional maturation side in oil field Method；The wells of described DX -7 oil well control oil reservoir refers to the oil reservoir in the range of 50 meters of well center；
Described precalculated position refers to：The oil reservoir position that chemical agent set in advance, hot fluid should be reached, can use oil Layer treatment radius, can also be with formation treatment volume as representing index as index is represented；Described formation treatment radius is Finger is by round dot of oil well bottom centre, the radius that chemical agent and hot fluid can be reached in oil reservoir；At described oil reservoir Reason volume refers to the total reservoir volume that line, chemical agent and hot fluid can be reached in oil reservoir centered on well center；
The crude oil and chemical agent, hot fluid mixture are mixed naturally in oil reservoir；The crude oil and chemistry Agent, hot fluid can in oil reservoir common seepage flow；
Described chemical agent, hot fluid can whole seepage flow be back to oil well, can also part seepage flow be back to oil well and A part is remained in oil reservoir；
The oil well spacing refers to：Designed distance between two mouthfuls of wells, belongs to oilfield design term, its setting side Method, technical scheme are the conventional maturation methods in oil field；Open source information shows：The oil well spacing of oil field at home is generally 100-500 Rice；The Fu Laer base oils well spacing is 100 meters；
Open source information shows：The basic recovery method of oil reservoir is to build oil well in oil reservoir, and corresponding oil reservoir is controlled with oil well Scope, is then controlled the oil extraction in oil reservoir to come out by oil well, and ripe method is belonged at home；The construction of oil well The method for falling within maturation；
Open source information shows：Oil well is connected with oil reservoir, and the crude oil in oil reservoir can enter oil well；Conversely, by fluid Add in oil well, can also be entered by oil well in oil reservoir；
Open source information shows：Oil well typically has oil pipe and sleeve pipe, and oil pipe has annular sky in sleeve pipe, between oil pipe and sleeve pipe Between, oil pipe and sleeve pipe can be connected as communicating pipe, can also be closed as not connecting with packer；
Open source information shows：Dynamic tubing string belongs to oil well operation category, costly, therefore fixed tubular column can reduce construction Expense, saves cost for oil production；
The chemical agent be weight than 80% mixed xylenes, 10% methanol, 10% oil-soluble petroleum sodium sulfonate mixing Thing；The hot fluid is 95~100 DEG C of clear water；
The wells of described DX -7 precalculated position is：It is using the formation treatment radius of present invention progress pilot production for the first time 12 meters, formation treatment volume is 900 cubic metres；The formation treatment radius that second of application present invention carries out pilot production is 17 Rice, formation treatment volume is 1800 cubic metres；The formation treatment radius that the third time application present invention carries out pilot production is 21 Rice, formation treatment volume is 2800 cubic metres；
By taking the wells of the DX -7 application present invention as an example：
Open source information shows：The wells of DX -7 belong to Fularchi Oilfield, and Fularchi Oilfield is located at Qiqihaer City, average 450 meters of buried depth, the sixties have just verified nearly 20,000,000 tons of oil in place, but verify in decades always using steaming Vapour huff and puff oil recovery technique carries out pilot development, and the economic value of crude oil is produced by the cost for oil production of the DP technology has exceeded, Cause the oil field to never have commercial development value, verify certainly and start and get down from horse for several times in decades, can not obtain always effectively Exploitation；
After the well in September, 2007 is built up, crude oil can not be produced with common oil production method；Using steam oil production method, 350 DEG C of 1100 tons of high-temperature steams are injected to oil reservoir, theoretical calculation, which is shown to be this, to be needed to burn up 66 tons of fuel oil, actually uses fuel oil 70 tons；Normal production 2 months of recovering the oil, adds up 300 tons of Liquid output, adds up 47 tons of crude oil extraction, produce crude oil and be not enough to after steam injection Offset the fuel oil that steam injection consumes burning；Therefore, the well steam soak thermal recovery technology does not have any economic value, the well Then stop using the steam soak thermodynamic oil extraction process mode of production, closing well leaves unused；
It is actually detected to show：20 DEG C of reservoir temperature around the well, produce 20 DEG C of viscosity 11000mP.s of crude oil sample, containing glue Matter asphalitine 32%, paraffin content 21%, 23 DEG C of wax precipitation temperature, 27 DEG C of asphalitine phase Precipitation Temperature；Therefore, oil reservoir temperature around the well Degree is less than asphalitine phase Precipitation Temperature and wax precipitation temperature, and crude oil has separated out asphalitine phase in oil reservoir and wax is brilliant, is separated out Asphalitine phase and wax brilliant Severe blockage oil reservoir seepage flow hole, causes reservoir permeability to be greatly reduced, the crude oil in oil reservoir is difficult to Smooth seepage flow is to oil well, so as to cause oil reservoir feed flow difficult, oil well can not be produced normally；
In order to solve the feed flow difficult problem that the well controls oil reservoir, make the smooth seepage flow of crude oil in well control liquefaction layer extremely Oil well, allows the oil well normally to produce, and the well has carried out pilot production using the present invention for the first time in January, 2008, its technical side Case is：First 80% mixed xylenes, 10% methanol, 10% oil-soluble petroleum sodium sulfonate are mixed into chemical agent composition, then used High-pressure pump squeezes and (is commonly called as anti-squeeze) 10 tons of chemical agent compositions into the casing, and then into the casing, squeezing is (popular again Claim anti-squeeze) 95~100 DEG C of 500 tons of clear water, using the clear water by chemical agent composition top in sleeve pipe and coming into oil reservoir It is pushed into the precalculated position (oil reservoir i.e. centered on oil well, in the range of 12 meters of formation treatment radius apart from 12 meters of the well center In), melt (or dissolving) formation treatment radius 12 using the joint synergy of the chemical agent composition and 95~100 DEG C of clear water Asphalitine phase and wax in the range of rice in oil reservoir is brilliant (that is, melting or dissolving the asphalitine in 900 cubic metres of reservoir volumes It is mutually brilliant with wax), the asphalitine phase Precipitation Temperature and wax precipitation temperature of oil reservoir Crude Oil are reduced, while formation pressure is improved, to make The smooth seepage flow of crude oil in oil reservoir is back to the oil well, then is carried the crude oil entered in oil well with the well and its existing oil production method Rise to ground；
Laboratory test shows：The change being mixed into by 80% mixed xylenes, 10% methanol, 10% oil-soluble petroleum sodium sulfonate Although learning, agent composition density ratio water is much smaller, and relatively stable emulsion can be formed when being mixed with water；Because clear water enters A kind of Turbulence Flow state after oil well casing, can with the chemical agent composition in sleeve pipe continuous mixing and emulsifying, therefore to the greatest extent Pipe clear water temperature is higher, is unfavorable for emulsion stability, but remained able in the chemical agent composition push-in oil reservoir with clear water；
Laboratory test shows：The dewaxing temperature of the well crude oil sample is 28 DEG C, 30 DEG C of asphalitine phase fusion temperature；Describedization (or dissolving) commodity pitch and commodity road asphalt can be dissolved at 25 DEG C by learning agent composition；Add in 25 DEG C of crude oil samples of the well Enter chemical agent composition described in 10%, 10 DEG C of the well crude oil freezing point can be reduced, 8 DEG C of its wax precipitation temperature is reduced, reduce its drip Blue or green 10 DEG C of matter phase Precipitation Temperature, illustrate at 25 DEG C the chemical agent composition by the brilliant effectively fusing of asphalitine phase and wax (or Dissolve)；It can thus be appreciated that：The asphalitine phase fusion temperature of the well oil sample by 30 DEG C can be down to 25 by the chemical agent composition DEG C, its 5 DEG C of asphalitine phase fusion temperature is reduced, the dewaxing temperature of the well oil sample can be down to 25 DEG C by 28 DEG C, dewaxing is reduced 3 DEG C of temperature；
Calculating shows：95~100 DEG C of 500 tons of clear water are added in the well, the oil in 12 meters of radius around the well can be made Layer temperature improves more than 8 DEG C, it was maintained at more than 28 DEG C in 48 hours, (or molten higher than the chemical agent composition fusing Change) more than 3 DEG C of the brilliant temperature of asphalitine phase and wax；It can thus be appreciated that：95~100 DEG C of clear water can melt for the chemical agent composition Change (or dissolving) asphalitine phase and wax crystalline substance creates thermal condition；
Therefore, the chemical agent composition and 95~100 DEG C of clear water joint synergies, can be by radius 12 around the well Asphalitine phase and wax the crystalline substance fusing (or dissolving) separated out in rice in oil reservoir, effectively reduces the freezing point of its crude oil, wax precipitation point, pitch Matter phase Precipitation Temperature；
Well first time application technical scheme of the present invention opening well and making production after 3 days, actual tests detection shows：The well is given birth to 20 DEG C of viscosity of crude 180mP.s of actual oil sample when producing 3 months, are the 1.6% of the well crude oil original viscosity, wax precipitation temperature is 16 DEG C, 7 DEG C are reduced than its original wax precipitation temperature, asphalitine phase Precipitation Temperature is 16 DEG C, than its fossil bitumen matter phase Precipitation Temperature drop It is low 11 DEG C, it is below the well and controls reservoir temperature, therefore asphalitine phase will not be separated out in the well controls oil reservoir and wax is brilliant；
The well using normal production 6 months after technical scheme of the present invention, adds up production liquid in by the end of June, 2008 for the first time 600 tons of amount, adds up 360 tons of crude oil extraction, economic benefit is extremely notable；
The crude oil seepage flow difficulty increase begun due in June, 2008 in the well oil reservoir, fluid supply capacity is not enough, well Liquid output drop To 0.5 ton per day, oil production is down to 0.3 ton per day, and oil well oil productive capacity is very low, is this well June 10 day in 2008 The secondary repeated application present invention has carried out pilot production, and its technical scheme carries out the skill of pilot production with the application present invention for the first time Art protocol step is essentially the same, except that second of concrete technical scheme data for carrying out pilot production using the present invention has Institute is different, and its technical scheme is：First by 80% mixed xylenes, 10% methanol, 10% oil-soluble being mixed into of petroleum sodium sulfonate Agent composition is learned, then squeezes and (be commonly called as anti-squeeze) 10 tons of chemical agent compositions into the casing with high-pressure pump, then again to this 95~100 DEG C of 1000 tons of clear water of squeezing (be commonly called as anti-squeeze) in casing, will be in sleeve pipe and come into oil reservoir using the clear water Chemical agent composition pushing tow to the precalculated position apart from 17 meters of the well center (i.e. centered on oil well, formation treatment radius 17 In oil reservoir in the range of rice), melt (or dissolving) using the joint synergy of the chemical agent composition and 95~100 DEG C of clear water Asphalitine phase and wax in the range of 17 meters of formation treatment radius in oil reservoir is brilliant (that is, melting or dissolving 1800 cubic metres of oil reservoirs Asphalitine phase and wax in volume is brilliant), the asphalitine phase Precipitation Temperature and wax precipitation temperature of oil reservoir Crude Oil are reduced, while improving oil Stressor layer, to make the smooth seepage flow of the crude oil in oil reservoir be back to the oil well, then will be entered with the well and its existing oil production method Crude oil in oil well is promoted to ground；
Second of application technical scheme of the present invention of well opening well and making production after 5 days, actual tests detection shows：The well is given birth to 20 DEG C of viscosity of crude 150mP.s of actual oil sample when producing 3 months, are the 1.4% of the well crude oil original viscosity, wax precipitation temperature is 15 DEG C, 8 DEG C are reduced than its original wax precipitation temperature, asphalitine phase Precipitation Temperature is 16 DEG C, than its fossil bitumen matter phase Precipitation Temperature drop It is low 11 DEG C, it is below the well and controls reservoir temperature, therefore asphalitine phase will not be separated out in the well controls oil reservoir and wax is brilliant；
Normal production 7 months, adds up production liquid in by the end of January, 2009 after second of application technical scheme of the present invention of the well 1300 tons of amount, adds up 500 tons of crude oil extraction, economic benefit is extremely notable；
Due to the crude oil seepage flow difficulty increase in the well oil reservoir in by the end of January, 2009, fluid supply capacity is not enough, well Liquid output drop To 0.5 ton per day, oil production is down to 0.35 ton per day, and oil well oil productive capacity is very low, is this well January 25 day in 2009 Three times the repeated application present invention has carried out pilot production, and its technical scheme using the present invention with being produced for the first time, for the second time The technical scheme steps of experiment are essentially the same, except that the third time application present invention carries out the particular technique side of pilot production Case data are different, and its technical scheme is：First by 80% mixed xylenes, 10% methanol, 10% oil-soluble petroleum sodium sulfonate Chemical agent composition is mixed into, then squeezes and (be commonly called as anti-squeeze) 10 tons of chemical agent compositions into the casing with high-pressure pump, so 95~100 DEG C of 1500 tons of clear water of squeezing (be commonly called as anti-squeeze) into the casing again afterwards, will be in sleeve pipe and using the clear water Into the chemical agent composition pushing tow of oil reservoir to the precalculated position apart from 21 meters of the well center (i.e. centered on oil well, at oil reservoir Manage in the oil reservoir in the range of 21 meters of radius), melted using the joint synergy of the chemical agent composition and 95~100 DEG C of clear water Asphalitine phase and wax in the range of 21 meters of (or dissolving) formation treatment radius in oil reservoir is brilliant (that is, it is vertical to melt or dissolve 2800 Asphalitine phase and wax in square rice reservoir volume is brilliant), the asphalitine phase Precipitation Temperature and wax precipitation temperature of oil reservoir Crude Oil are reduced, together Shi Tigao formation pressures, to make the smooth seepage flow of the crude oil in oil reservoir be back to the oil well, then with the well and its existing oil recovery side The crude oil entered in oil well is promoted to ground by method；
Well third time application technical scheme of the present invention opening well and making production after 5 days, actual tests detection shows：The well is given birth to 20 DEG C of viscosity of crude 120mP.s of actual oil sample when producing 3 months, are the 1.1% of the well crude oil original viscosity, wax precipitation temperature is 14 DEG C, 9 DEG C are reduced than its original wax precipitation temperature, asphalitine phase Precipitation Temperature is 15 DEG C, than its fossil bitumen matter phase Precipitation Temperature drop It is low 12 DEG C, it is below the well and controls reservoir temperature, therefore asphalitine phase will not be separated out in the well controls oil reservoir and wax is brilliant；
Normal production 9 months, adds up production liquid in by the end of September, 2009 after well third time application technical scheme of the present invention 1600 tons of amount, adds up 550 tons of crude oil extraction, economic benefit is extremely notable；
Due to the crude oil seepage flow difficulty increase in the well oil reservoir in by the end of September, 2009, fluid supply capacity is not enough, well Liquid output drop To 0.5 ton per day, oil production is down to 0.2 ton per day, and oil well oil productive capacity is very low, is this well in August in 2009 the 4th time The repeated application present invention has carried out pilot production, and its technical scheme is similar with first three application, i.e.,：Apply the technology of the present invention every time During scheme, the chemical agent composition added into the well oil reservoir is 10 tons, and 95~100 DEG C of clear water amounts added be then Previous application technical solution of the present invention is further added by more than 500 tons on the basis of water is added into oil reservoir, to prevent the well oil reservoir Energy deficit.
Technical solution of the present invention is so periodically applied repeatedly, you can by chemical agent composition and 95~100 DEG C of clear water weeks Phase property is added in the well controls of DX -7 liquefaction layer, the oil extraction in the well control liquefaction layer is come out, until belonging to the well or being controlled Untill oil extraction in oil reservoir (oil reservoir i.e. in the range of 50 meters of the wells of DX -7 center) is finished.
The mill trial results show：The wells of DX -7 are periodically applied after technical scheme of the present invention repeatedly, effective solution The problem that the natural seepage flow feed flow difficulty of the well control liquefaction layer of having determined, oil well can not be produced normally, the effect that increases production and improves productivity is extremely notable, It can realize the Fularchi Oilfield residing for the well and adopt the commercial mining target that crude oil economic value is more than cost for oil production, first The oil field is set to possess commercial development value and economic value.
The pilot production and laboratory test of the wells of DX -7 show：The joint synergy of chemical agent and hot fluid can be effective The asphalitine phase and wax melted in (or dissolving) the well oil reservoir is brilliant；Due to chemical agent and hot fluid no matter in ground, oil well be It is no mixing, addition sequence how, its enter oil reservoir after can all mix naturally；Due to hot-fluid physical efficiency is added into oil reservoir from oil pipe The temperature for making it into oil reservoir is higher；Therefore, chemical agent and hot fluid no matter whether mixed in ground, oil well, addition sequence How, how to add inherently will not influence the effect of its joint synergy；Therefore, the present invention in it is other such as " add oil with existing method (as pumped) after first mixing chemical agent and its 1-10 times hot fluid in ground or/and oil well In well, then hot fluid is added in oil well with existing method (as pump), with hot fluid by chemical agent pushing tow to the oil well control The precalculated position of liquefaction layer ", " with existing method (such as pump after first chemical agent and hot fluid mixs in ground or/and oil well Send) add in oil well, then the precalculated position that the oil well controls oil reservoir is entered by oil well ", " first with existing method (as pump) Chemical agent is added in oil well, then entered chemical agent pushing tow in oil reservoir with special gas, then with existing method (as pumped) By hot fluid add oil well in, with hot fluid by chemical agent pushing tow to the oil well control oil reservoir precalculated position ", " first by chemistry Agent and its 1-10 times hot fluid are added in oil well after being mixed in ground or/and oil well with existing method (as pumped), then Chemical agent, hot fluid mixture pushing tow are entered in oil reservoir with special gas, then added hot fluid with existing method (as pumped) Enter in oil well, chemical agent pushing tow to the oil well controlled to the precalculated position of oil reservoir with hot fluid ", " by oil well oil conduit with existing Chemical agent and hot fluid are added oil well and then are pushed into the predetermined of oil well control oil reservoir by method (as pumped) respectively or/and after mixing Position ", " special gas is first added into oil well casing, it is then by oil well oil conduit that chemical agent and hot fluid is respectively or/and mixed After conjunction add oil reservoir so that be pushed into oil well control oil reservoir precalculated position " etc. method the equal expectability of effect.
The practice of construction as shown by data of the well：Add into oil reservoir with the flow of 10-15 ton hours 95 with high-pressure pump~ There is not obvious lifting in 100 DEG C of oilfield sewages, the well mouth of oil well；Set because the well casing programme belongs to conventional cold structure of adopting Meter, therefore implementation technical solution of the present invention will not produce the defect for damaging common well wellbore and casing programme.
Embodiment 6
A kind of exploitation method of thick oil type oil deposit, comprises the following steps：In order to be recovered the oil using chemical agent-hot fluid joint displacement of reservoir oil Mode (or technique) more cost-effective ground heavy crude producing type oil reservoir, improves oil reservoir ultimate recovery, by centerwell, uses existing side Method (as pumped) adds chemical agent and hot fluid in oil reservoir, and the asphalitine phase and wax in fusing (or dissolving) oil reservoir are brilliant, reduction The asphalitine phase Precipitation Temperature and wax precipitation temperature of oil reservoir Crude Oil, and drive around the smooth seepage flow of the crude oil in oil reservoir to centerwell Producing well in, then allow crude oil to rise to ground from producing well, the oil extraction in oil reservoir come out；
In order to reduce hot fluid into the heat loss before oil reservoir in oil well, it is ensured that hot fluid enters the temperature of oil reservoir more Nitrogen is added in height, Xian Xiang centers casing to stop to 3.5~4MPa of casing pressure, then by centerwell oil pipe by chemical agent and Hot fluid is added in oil reservoir；Nitrogen pressure in the center casing will supplement nitrogen thereto to set when being down to 2MPa Pipe pressure reaches that 3.5~4MPa of pressure stops again, to supplement nitrogen into the loss in oil reservoir；
Described centerwell refers to：D5-2 water injection wells, for chemical agent and hot fluid are added in oil reservoir, are not used to production Crude oil；
Described producing well：Refer to D5-X3, D5-X5 oil well, for producing crude oil；
The D5-2 water injection wells are enough connected with D5-X3, D5-X5 oil well by oil reservoir；
Described chemical agent-hot fluid joint displacement of reservoir oil oil production method or technique：Refer to add chemical agent from D5-2 water injection wells And hot fluid, allow chemical agent, hot fluid drive the crude oil seepage flow in oil reservoir to D5-X3, D5-X52 mouthfuls of oil wells and by D5-X3, D5-X52 mouthfuls of oil wells rise to the oil production method or technique on ground, allow chemical agent, hot fluid to drive the crude oil seepage flow in oil reservoir to adopting Oil well is " drive " that oil field is commonly called as；
Described chemical agent and hot fluid are continuously alternately added in D5-2 water injection wells always, are then mixed in the well Enter oil reservoir after conjunction；
Chemical agent-hot fluid joint displacement of reservoir oil that described D5-2 water injection wells meet centerwell addition-producing well extraction is recovered the oil The need for mode or technique, the need for meeting thick oil type oil deposit exploitation；
Chemical agent-hot fluid joint that described D5-X3, D5-X5 oil well meets centerwell addition-producing well extraction is driven The need for oily oil production method or technique, the need for meeting thick oil type oil deposit exploitation；
The chemical agent is by the water-soluble pour-point depressant of 20% commodity, 20% mixed methylnaphthalene, the 20% commodity oil-soluble displacement of reservoir oil The chemical agent composition that agent, 20% commodity oil-base paraffin remover, 20% liquid petroleum resin are mixed；
The hot fluid is 70~80 DEG C of oilfield sewages；
70~80 DEG C of described oilfield sewages contain 0.5% commercial surfactant, can effectively reduce the oil field dirty Interfacial tension of the water in oil reservoir between crude oil, rock, sand grains；
Described D5-X3 wells, D5-X5 wells are in the symmetrical position in D5-2 both sides, and the design oil well spacing with D5-2 wells is 100；
Open source information shows：The oil recovery side of various " drives " such as water drive, chemical flooding, steam drive, surfactant flooding, gas drives The recovery ratio of method, ultimate recovery are higher than the oil production method of corresponding " handling up ", therefore chemical agent-hot fluid joint displacement of reservoir oil oil recovery side The effect of formula is better than chemical agent-hot fluid joint huff and puff oil recovery mode and is expected；
The production practices of Fularchi Oilfield show：The chemistry of D5-2 water injection wells addition-D5-X3, D5-X5 oil well produced Agent-hot fluid joint displacement of reservoir oil oil production method can be implemented be expected in actual production；
Using D5-2 as water injection well, D5-X3, D5-X5 as production well well group application the present invention exemplified by：
D5-2 wells belong to Fularchi Oilfield, are built up in September, 2007.Due to Fu Laer base oil oil reservoirs buried depth average 450 Rice, without associated gas, natural energy is low, and original reservoir pressure can supplement stratum energy less than 5MPa with water-filling method. The well original is designed as oil well, and because that can not produce crude oil with common oil production method, 2007 after building up year metaideophone in October (is changed into Water injection well), it is 50 sides/day, 8~10MPa of water injection pressure, 9~10 DEG C of water filling temperature, design effectively to note normal temperature earth's surface clear water amount day The oil reservoir scope that water filling scope is controlled by D5-2 wells, D5-X5 wells, D5-X3 wells, adds up 60 days total 3000 sides of effective water filling, Benefited producing well D5-X5 wells, the equal water breakthrough of D5-X3 wells, but there is no crude oil output, show the water injection method without actual beneficial effect Really, it is that this well stops water filling in January, 2008, closing well leaves unused；
D5-X3 wells, D5-X5 wells belong to Fularchi Oilfield, are built up in October, 2007, with common oil production method not Crude oil can be produced, does not have any economic value using steam soak thermal recovery technology, is opened with 1 pair 2 of water filling-oil recovery of D5-2 well constructions There is no any note after hair well group and adopt effect, the well stops then；
Analysis shows：D5-2 wells are because have been carried out the water filling of 60 days total 3000 sides, the crude oil of adjacent to oil well area Saturation degree is rational than D5-X3 well, D5-X5 wells, therefore as centerwell；Although and D5-X3 wells, D5-X5 wells are shown in Water, but there is no crude oil output, show that the Crude Oil between D5-X3 wells, D5-X5 wells and D5-2 wells seriously separates out asphalitine Mutually and wax is brilliant or solidify in oil reservoir, therefore the crude oil during the normal temperature surface water injected from D5-2 wells can not drive oil reservoir Into D5-X3 wells, D5-X5 wells and can only allow 2 mouthfuls of well water outlets；
Crude oil in the oil reservoir for being controlled the well group for chemical agent-hot fluid joint displacement of reservoir oil oil production method (or technique) Mined, the well group has carried out pilot production 2 months~July in 2008 using the present invention.Its technical scheme is：First, close Close D5-X3 wells, D5-X5 well well head techniques；Then, first with existing method by under commodity heat-sensitive packer tripping in D5-2 water injection wells In oil pipe-casing annulus at 400 meters, sleeve pipe top is risen to the hot fluid for preventing oil well bottom and causes hot fluid Heat loss, then 3000~5000 standard cubic meter nitrogen are injected into the well annular space with oil field special nitrogen car, allows its set Pressure reaches 3.5~4MPa, effectively to reduce heat loss of the hot fluid in oil well；Then, first with high-pressure pump into the well oil pipe Injection is clear by the water-soluble pour-point depressant of 20% commodity, 20% mixed methylnaphthalene, 20% commodity oil-soluble oil displacement agent, 20% commodity oil base 20 tons of the chemical agent composition that cerate, 20% liquid petroleum resin are mixed, then with high-pressure pump into the well oil pipe with 30 tons/ 70~75 DEG C oilfield sewages 500 ton of the flow injection containing 0.5% commercial surfactant of day；Then, constantly repeat to 20 tons of chemical agent compositions and 500 tons of 70~75 DEG C of oil fields containing 0.5% commercial surfactant are injected in the well oil pipe The step of sewage, and when the casing pressure is down to 2MPa nitrogen is supplemented into sleeve pipe with oil field special nitrogen car in period, To ensure that the nitrogen pressure in the casing is maintained between 2~4MPa；The chemical agent composition and the oilfield sewage are allowed in D5- 2 wells are mixed naturally into the oil reservoir between D5-X3 wells, D5-X5 wells, and the asphalitine phase and wax in fusing (or dissolving) oil reservoir are brilliant, The asphalitine phase Precipitation Temperature and wax precipitation temperature of oil reservoir Crude Oil are reduced, and drives the smooth seepage flow of the crude oil in oil reservoir to D5-X3 Well, D5-X5 wells；When D5-X3 wells, the oil pipe of D5-X5 wells or casing pressure rise to 0.5MPa by 0MPa, startup D5-X3 wells, The oil pumper of D5-X5 wells, ground is promoted to by crude oil.
Experiment shows：The chemical agent composition can be mixed into emulsion with the oilfield sewage, although therefore described 70-75 DEG C of oilfield sewage temperature can influence the stability of emulsion, but be turbulent condition because of the two flowing in oil pipe, because This its continuous mixing and emulsifying and can enter in D5-2 well oil pipes in oil reservoir；
Experiment shows：The dewaxing temperature of the well crude oil sample is 28 DEG C, 30 DEG C of asphalitine phase fusion temperature；In 23 DEG C of wells Chemical agent composition described in 10% is added in crude oil sample, 5 DEG C of its wax precipitation point can be reduced, its dewaxing temperature is reduced to 23 DEG C, Its 9 DEG C of asphalitine phase Precipitation Temperature is reduced, its 7 DEG C of asphalitine phase fusion temperature is reduced；
Calculating shows：70~75 DEG C of 500 tons of oilfield sewages are added in the well, can be made around the well in 10 meters of radius Reservoir temperature improves more than 5 DEG C, it was maintained at more than 25 DEG C in 48 hours, the asphalitine higher than the well crude oil sample mutually melts Change 2 DEG C of temperature, higher than 2 DEG C of the dewaxing temperature of the well crude oil sample；It can thus be appreciated that：70~75 DEG C of oilfield sewage can melt The asphalitine phase and wax changed in (or dissolving) oil reservoir are brilliant；
Because the chemical agent composition, 70~75 DEG C of oilfield sewages constantly enter D5-2 wells extremely by D5-2 wells oil pipe Between D5-X3 wells, D5-X5 wells in oil reservoir, therefore chemical agent and it can pass through connection with 70~80 DEG C of oilfield sewage place of arrival Close the asphalitine phase separated out in synergy, fusing (or dissolving) oil reservoir and wax is brilliant, effectively reduce wax precipitation point, the pitch of its crude oil Matter phase Precipitation Temperature；When chemical agent and 70~75 DEG C of oilfield sewages and the crude oil in oil reservoir from D5-2 wells seepage flow reach D5-X3 wells, After D5-X5 wells, D5-2 wells, D5-X3 wells, D5-X5 wells control asphalitine phase and wax in oil reservoir brilliant, i.e., all melted；
The well is using technical scheme of the present invention after 11 days, and D5-X3 wells, D5-X5 well oil pressure increase to 0.5MPa by zero, are This starts D5-X3 wells, the production of D5-X5 wells oil pumper, and in initial production 10 days, 2 mouthfuls of wells add up to the ton per day of water yield per day 40, raw Production starts to see oil after 15 days；2 mouthfuls of wells add up to the ton per day of day oil-producing 1 after producing 20 days, add up to the daily output ton per day of liquid 25；After production 26 days 2 mouthfuls of wells add up to the ton per day of day oil-producing 4, add up to the production ton per day of liquid 27；Actual tests detection shows：Actual oil when the well is produced 30 days 20 DEG C of viscosity of crude 210mP.s of sample, are the 2% of the well crude oil original viscosity, wax precipitation temperature is 19 DEG C, than its original wax precipitation temperature 4 DEG C of reduction, asphalitine phase Precipitation Temperature is 18 DEG C, reduces by 9 DEG C than its fossil bitumen matter phase Precipitation Temperature, is below oil reservoir temperature Degree, therefore asphalitine phase will not be separated out in oil reservoir and wax is brilliant；
3 mouthfuls of well groups apply continuous normally produce after technical scheme of the present invention to remain able to normal life after 12 months Production, adds up to add chemical 400 tons of agent composition to D5-2 wells, adds 11000 tons of hot fluid in by the end of November, 2008 to；D5-X3 wells, Accumulative total 13000 tons of the Liquid output of 2 mouthfuls of wells of D5-X5 wells, adds up 6000 tons of crude oil extraction, economic benefit is extremely notable.
Experiment in the present embodiment has shown that：By oil well oil conduit with existing method (as pump) by chemical agent and hot-fluid It is feasible that body, which is added in oil reservoir,；It is method ripe during oil field is produced because prospect pit is converted to production well, therefore in prospect pit The effect of upper application technical scheme of the present invention is expected.
Experiment in the present embodiment has shown that：Driven using chemical agent-hot fluid joint of 1 mouthful of centerwell, 2 mouthfuls of producing wells Oily oil production method (or technique) being capable of effectively heavy crude producing type oil reservoir, therefore the water injection well passed through using oil field at home is in There are 5 mouthfuls of oil wells or i.e. anti-5 points of 9 mouthfuls of oil wells or anti-9 arrangement applied chemistries agent-hot fluid joint to drive around the heart, water injection well Oily oil production method (or technique) heavy crude producing type oil reservoir effect is expected.
Experiment in the present embodiment has shown that：70~75 DEG C of hot fluids have been able to give play to well with the chemical agent Synergy；Due to hot fluid heating stove heat used before oil well and/or water injection well and/or/oil reservoir is entered, electrical heating Method, electromagnetic heating method, microwave (or ultrasonic wave) heating means itself be it is ripe, add oil well and/or water injection well and/ Or wellbore electric heating method, kelvin effect electrical heating method, shaft bottom electrical heating method, pit shaft or shaft bottom electricity used in after/oil reservoir Magnetic heating means, pit shaft or shaft bottom microwave (or ultrasonic wave) heating means itself are also ripe；Therefore, the hot fluid is existed Add be heated to before oil well and/or water injection well and/or/oil reservoir with existing heating means 110~200 DEG C and add oil well and/ Or the effect that after water injection well and/or/oil reservoir is heated to 110~200 DEG C with existing heating means is contemplated to.
Embodiment 7
A kind of exploitation method of thick oil type oil deposit, comprises the following steps：Hot fluid is first used existing before heating or/and after heating There is method to carry out scale control treatments, then add chemical agent and hot fluid into oil reservoir again, to melt the drip in (or dissolving) oil reservoir Blue or green matter phase and wax are brilliant, reduce the asphalitine phase Precipitation Temperature and wax precipitation temperature of oil reservoir Crude Oil, the crude oil in oil reservoir is smoothly oozed It flow to oil well, then crude oil is promoted to ground from oil well with existing method.First processing hot fluid purpose is described in order to prevent Hot fluid it is incompatible with the water chemistry in oil reservoir and produce clogging deposits oil reservoir hole, or in order to prevent described hot-fluid Body serious scale in oil well or/and oil reservoir, or in order to prevent described hot fluid in heat temperature raising equipment installation seriously Fouling；
Can guarantee that it is mixed with the water in oil reservoir after the hot fluid progress scale control treatments will not produce clogging deposits oil Layer space, will not in oil well, equipment, pipeline, middle oil reservoir serious scale, to reach object defined above, ordinary skill people Member can determine the concrete technical scheme handled hot fluid.
Open source information shows：Influenceed by complex geological condition, what the water in oil reservoir had belongs to sodium bicarbonate water type, some category In calcium chloride water type, what is had belongs to sulfate-sodium type, and what is had belongs to sodium bicarbonate-carbonate water type, and its salinity typically all exists More than 2000mg/L, even as high as more than the 100000mg/L having；From chemical knowledge：If calcium chloride water type oil field is dirty Water is added in sulfate-sodium type or sodium bicarbonate-carbonate water type oil reservoir, it is possible to produce calcium sulfate, precipitation of calcium carbonate；If Calcium chloride water type oilfield sewage is added in sodium bicarbonate water type oil reservoir, although sediment will not be produced, but due to bicarbonate radical Carbanion can be converted into pressure reduction, temperature rise, incrustation scale can be formed in pipeline, oil well, equipment with calcium ion；
To be used as hot fluid to add sulfate-sodium type 100 DEG C of calcium chloride water type or calcium ion content very high oilfield sewage Exemplified by oil reservoir；
, can be first with following in order to prevent calcium ion contacts mixing with sulfate ion in oil reservoir from producing precipitation or fouling Technical scheme handles calcium chloride water type or calcium ion content very high oilfield sewage：To calcium chloride water type or calcium ion content very first The compound alkali or buck being made up of sodium hydroxide, sodium carbonate each 50% are added in high oilfield sewage, the calcium in the sewage is removed Ion, is then again adjusted the pH value of the sewage to original value with hydrochloric acid, is then heated to 100 DEG C；Then again by 100 DEG C of dirts Water is added in sulfate-sodium type oil reservoir as hot fluid；
Exemplified by 100 DEG C of magnesium ions, iron ion contents very high clear water are added in oil reservoir as hot fluid.
In order to prevent magnesium ion, ferrous ion from being precipitated or fouling in firing equipment, pipeline, oil well, oil reservoir, Ke Yixian Magnesium ion, ferrous ion content very high clear water are handled with following technical scheme：First removed with existing aeration, manganese sand method for removing iron The iron ion gone in water, then the compound alkali or buck being made up of sodium hydroxide, sodium carbonate each 50% are added into water, remove the dirt Magnesium ion in water, is then again adjusted the pH value of water to original value with hydrochloric acid, is then heated to 100 DEG C；Then again by this 100 DEG C sewage is added in oil reservoir as hot fluid.
Embodiment 8
A kind of exploitation method of thick oil type oil deposit, comprises the following steps：In order to keep the chemical agent to be in when adding oil well Liquid, the chemical agent can be before or after oil well be added with the heating of existing heating means, to improve or keep chemical agent temperature Degree and its mobility；The chemical agent relevant should meet national standard, professional standard, enterprise's mark when being heated with existing heating means Alignment request, specific heating means can be determined as those of ordinary skill in the art with existing method.
So that the chemical agent is melting naphthalene liquid as an example.
Open source information shows：The fusing point of naphthalene is 80.5 DEG C, in order to not solidified when ensureing that melting naphthalene liquid adds oil well, with good Good mobility, can use following technical scheme：Melting naphthalene liquid is first heated to 100 DEG C with explosion-proof power adder heat, then with 1 100 DEG C of water more than times are added in oil well together.
Embodiment 9
A kind of exploitation method of thick oil type oil deposit, comprises the following steps：Enter oil reservoir to reduce hot fluid and/or chemical agent The preceding heat loss in oil well, it is ensured that the temperature that hot fluid, chemical agent enter oil reservoir is higher, first adds nitrogen into oil well casing Gas, natural gas, gaseous carbon dioxide, refinery gas, flue gas any one or it is any two or more with arbitrary proportion The mixture of mixing, then adds chemical agent and hot fluid into oil reservoir by oil well oil conduit, to melt in (or dissolving) oil reservoir Asphalitine phase and wax it is brilliant, reduce the asphalitine phase Precipitation Temperature and wax precipitation temperature of oil reservoir Crude Oil, make the crude oil in oil reservoir suitable Crude oil is promoted to ground by sharp seepage flow to oil well, then with existing method from oil well.
By taking the Zheng412Jing application present invention as an example：
Shengli Oil Field open source information shows：Zheng412Jing belongs to Shengli Oil Field Zhen411 block, and its 50 DEG C degassings of indoor actual measurement are former Oil viscosity is 150000mP.s, belongs to Extra-heavy oil reservoir, is constructed and put into operation in April, 2005, is handled up thermodynamic oil extraction process using hot gas Recover the oil, 1500 tons of steam injection first, add up production 500 tons of liquid, add up 76 tons of oil-producing, theoretical calculation show produced crude oil be not enough to The steam injection that disappears consumes the fuel oil of burning, therefore the well steam soak thermal recovery technology does not have any economic value, and the well is satisfied Stop using the steam soak thermodynamic oil extraction process mode of production, closing well leaves unused.
It is actually detected to show：49 DEG C of Zhen411 block reservoir temperature, the well of Zheng 412 produces 50 DEG C of degassing viscosity of crude oil sample and is 150000mP.s, 70 DEG C of asphalitine phase Precipitation Temperature；Therefore, reservoir temperature is less than asphalitine phase Precipitation Temperature 21 around the well DEG C, crude oil has separated out asphalitine phase in oil reservoir, the asphalitine phase Severe blockage that is separated out oil reservoir seepage flow hole, causes oil Layer permeability is greatly reduced, and the crude oil in oil reservoir is difficult to smooth seepage flow to oil well, so as to cause oil reservoir feed flow difficult, oil well can not Normal production；
In order to solve the feed flow difficult problem of oil reservoir around the well, make the smooth seepage flow of crude oil around the well in oil reservoir to oil Well, allows the oil well normally to produce, and the well has carried out pilot production in April, 2006 using the present invention, and its technical scheme is：First use Oil well pump in the well, taking out pumping rod are squeezed and (are commonly called as anti-squeeze) nitrogen by existing method with existing nitrogen car into the casing The standard cubic meter of gas 3000~5000, untill air pressure into sleeve pipe is more than 3MPa；Then squeezed with high-pressure pump into the well oil pipe 20 tons of note (being commonly called as just squeezing) is lived by 40% Span-20,20% fusel oil, 20% methanol, 20% biological surface Property the chemical agent composition that mixes of agent transparent aqueous solution body, then squeeze into the well oil pipe 120~130 DEG C of oilfield sewages 600 tons, the chemical agent composition in oil pipe is pushed into oil reservoir using the sewage and mixed with it in oil reservoir, chemical agent is utilized Mixture and asphalitine phase and wax crystalline substance in joint synergy fusing (or dissolving) oil reservoir of 120~130 DEG C of oilfield sewages, drop The asphalitine phase Precipitation Temperature and wax precipitation temperature of low oil reservoir Crude Oil, while formation pressure is improved, to make the crude oil in oil reservoir Smooth seepage flow will be promoted to ground to oil well, then with the well and its existing oil production method into the crude oil in oil well.
From open source information：Span-20 is emulsifying agent, biosurfactant transparent aqueous solution Also there is emulsification, therefore the chemical agent composition has good emulsifying capacity；Because oilfield sewage enters after oil well oil conduit It is a kind of Turbulence Flow state, can constantly mixes, emulsify in oil pipe with chemical agent composition, although therefore the oilfield sewage Temperature is up to 120~130 DEG C, can influence the stability of emulsion, but still can be mixed the chemical agent with the oilfield sewage In compound push-in oil reservoir.
Laboratory test and open source information show：The asphalitine phase fusion temperature of the well crude oil sample is 80 DEG C；Fusel oil exists 50 DEG C can melt (or dissolving) commodity pitch and commodity road asphalt；Added in 50 DEG C of crude oil samples of the well described in 10% Chemical agent composition, can reduce by 23 DEG C of the well crude oil asphaltenes phase Precipitation Temperature, illustrate the chemical agent composition at 50 DEG C By asphalitine mutually effectively fusing (or dissolving)；It can thus be appreciated that：The chemical agent composition can be by the pitch of the well oil sample Matter phase fusion temperature is down to 50 DEG C, 30 DEG C of reduction asphalitine phase fusion temperature by 80 DEG C.
Calculating shows：120~130 DEG C of 600 tons of oilfield sewages are added in oil reservoir by the well oil pipe, well week can be made The reservoir temperature enclosed in 7 meters of radius improves more than 10 DEG C, it was maintained at more than 59 DEG C in 48 hours, higher than the well crude oil sample More than 9 DEG C of the asphalitine phase fusion temperature of product；It can thus be appreciated that：120~130 DEG C of oilfield sewages can be the chemical agent composition Fusing (or dissolving) asphalitine mutually creates thermal condition.
Therefore, the chemical agent composition and 120~130 DEG C of oilfield sewage joint synergies, can be by around the well The asphalitine separated out in 7 meters of radius in oil reservoir mutually melts (or dissolving), effectively reduces the freezing point of its crude oil, asphalitine and mutually separates out Temperature.
The well shows using technical scheme of the present invention opening well and making production after 5 days, actual tests detection：The well produces 2 50 DEG C of degassing viscosity of actual oil sample during the moon are 6000mPa.s, are the 4% of its original 50 DEG C of degassings viscosity, asphalitine is mutually separated out Temperature is 42 DEG C, lower 28 DEG C than its fossil bitumen matter phase Precipitation Temperature, lower than reservoir temperature around the well 7 DEG C, therefore in the well Surrounding reservoir temperature will not separate out asphalitine phase；50 DEG C of actual oil sample degassing viscosity when the well is produced 4 months are 7200mPa.s, less than the 5% of its original 50 DEG C of degassings viscosity, asphalitine phase Precipitation Temperature is 44 DEG C, than its fossil bitumen matter phase Precipitation Temperature is low 26 DEG C, lower than reservoir temperature around the well 5 DEG C, therefore reservoir temperature will not separate out asphalitine around the well Phase.
The mill trial results show：The well is used after technical scheme of the present invention, and oil reservoir seepage flow fluid supply capacity is significantly Improve, effect of increasing production is extremely notable, and effective time has reached 5 months, add up 1950 tons of Liquid output, add up 800 tons of crude oil extraction, Economic benefit is extremely notable；The problem that the well can not have been produced normally since build up always is efficiently solved, victory is efficiently solved The sharp block super heavy oil recovery difficult problem of oil field Zheng 411.
The practice of construction as shown by data of the well：Add into oil reservoir with the flow of 8-12 ton hours 120 with high-pressure pump~ 130 DEG C of oilfield sewages, operation pressure is 15-20MPa, will not press and wear the well oil reservoir；The well mouth of oil well does not occur in construction Obvious lifting；Therefore the defect for damaging well wellbore and casing programme will not be produced by implementing technical solution of the present invention.
The practice of construction data and open source information of the well show：Under 15-20MPa pressure, 120~130 DEG C of hot fluid Liquid is still fallen within pipeline, oil well, can be pumped with high-pressure pump.
Embodiment 10
A kind of exploitation method of thick oil type oil deposit, comprises the following steps：In order to by the residue in oil reservoir around water injection well Oil extraction is come out, and water injection well first is converted into oil well, then with chemical agent-heat described in previous embodiment in the present invention 3 Fluid joint huff and puff oil recovery mode (or technique) is mined by the residual crude oil in oil reservoir around water injection well.
Open source information shows：The recovery ratio of thick oil type oil deposit is very low, by taking quiet 35 blocks of east oil reservoirs as an example, its adopting more than 15 years Yield only has 3%, and its projected ultimate recovery only has 10%, and its Theoretical Calibration ultimate recovery is 20%；Therefore, water injection well without By being to be converted by oil well or newly-built, still there is 80%-97% residual crude oil around institute in oil reservoir, if do not opened Extraction can cause the wasting of resources；Due to the difference of water injection well and oil well without essence, it is ripe that water injection well, which is converted into oil well, Foregoing embodiment 3 in method, therefore the water injection well application present invention, chemical agent-hot fluid described in embodiment 5, which are combined, to be handled up The effect of residual crude oil around oil production method (or technique) Mining Water Injection well in oil reservoir is expected.
By taking the D5-2 wells application present invention as an example.
The chemical agent is weight than 10% mixed methylnaphthalene, the water-soluble thinner of 10% commodity, 10% commodity oil-soluble The water-soluble commodity oil displacement agent of pour-point depressant, 10% containing surfactant, 10% methyl naphthalene fusel oil liquid, 10% biodiesel, 10% oil-soluble petroleum sodium sulfonate and butyl mixing liquid, 5% anthracene and aromatic solvent naphtha mixing liquid, 5% naphthols Be mixed into mixing liquid with liquid petroleum resin mixing liquid, 5% commodity wax-proofing agent, 5% pyridine, then by 5% Petropols, 5% ethene is dissolved in the mixing liquid with acrylate copolymer and chemical agent composition is made；The hot fluid is 45~55 DEG C Clear water；
D5-2 wells belong to Fularchi Oilfield, are built up in September, 2007.Due to Fu Laer base oil oil reservoirs buried depth average 450 Rice, without associated gas, natural energy is low, can supplement stratum energy with water-filling method.The well original is designed as production well, because with Common oil production method can not produce crude oil, and 2007 after building up year metaideophone in October (changing into water injection well), day notes earth's surface clear water Measure as 50 sides/day, 8~10MPa of water injection pressure, 9~10 DEG C of water filling temperature, design effectively water filling scope is D5-2 wells, D5-X5 The oil reservoir scope that well, D5-X3 wells are controlled, adds up 60 days total 3000 sides of effective water filling, and JingD5-X5Jing, D5-X3 well of being benefited are equal Water breakthrough, but there is no crude oil output, show that the water injection method, without actual beneficial effect, is that this well stops in January, 2008 Water filling, closing well leaves unused；
Actually detected and analysis shows：20 DEG C of reservoir temperature around the well, produce 20 DEG C of viscosity of crude oil sample 11000mP.s, containing gum asphalt 32%, paraffin content 21%, 23 DEG C of wax precipitation temperature, 27 DEG C of asphalitine phase Precipitation Temperature；Therefore, Reservoir temperature is less than crude oil wax precipitation temperature, asphalitine phase Precipitation Temperature around the well, and crude oil has separated out asphalitine in oil reservoir It is mutually brilliant with wax；By the water injected is surface water, 9~10 DEG C of water temperature is lower than crude oil wax precipitation temperature 13 DEG C, is mutually analysed than asphalitine Go out temperature low 17~18 DEG C, the inevitable Crude Oil that further aggravates separates out asphalitine phase and wax crystalline substance；The asphalitine phase that is separated out and Wax crystalline substance Severe blockage oil reservoir seepage flow hole, causes reservoir permeability to be greatly reduced, the viscosity of crude in oil reservoir is significantly increased, because The smooth seepage flow of crude oil that this water filling is difficult in effectively driving oil reservoir is produced to oil well；Therefore, although the well adds up water filling Crude oil around 3000 sides, but the well in oil reservoir is not driven away effectively by water；
In order to the residual crude oil in oil reservoir around the well is mined, the well was in application present invention progress in 2 months 2008 Pilot production, its technical scheme is：D5-2 water injection wells are first transformed into oil well according to the requirement of oil pumper production crude oil, then By 10% mixed methylnaphthalene, the water-soluble thinner of 10% commodity, 10% commodity oil-soluble pour-point depressant, 10% containing surfactant Water-soluble commodity oil displacement agent, 10% methyl naphthalene fusel oil liquid, 10% biodiesel, 10% oil-soluble petroleum sodium sulfonate and diethyl Glycol butyl ether mixing liquid, 5% anthracene and aromatic solvent naphtha mixing liquid, 5% naphthols and liquid petroleum resin mixing liquid, 5% Commodity wax-proofing agent, 5% pyridine are mixed into mixing liquid, then 5% Petropols, 5% ethene and acrylate copolymer are dissolved Chemical agent composition is made in the mixing liquid, then again by the water filling casing, with high-pressure pump according to 10-15 ton hours Flow chemical 20 tons and 45~55 DEG C 500 tons of clear water of agent composition are added in the oil reservoir around the water injection well, allow it in oil Mixed naturally with crude oil in layer, it is brilliant to melt asphalitine phase and wax in (or dissolving) oil reservoir, reduce the pitch of oil reservoir Crude Oil Matter phase Precipitation Temperature and wax precipitation temperature, make the smooth seepage flow of mixture of crude oil and chemical agent in oil reservoir, water be back to the water filling Well, then ground is risen to by the production well；
Experiment shows：The dewaxing temperature of the affiliated Reservoir Crude Oil sample of the well is 28 DEG C, 30 DEG C of asphalitine phase fusion temperature； The chemical agent composition can dissolve (or dissolving) commodity pitch and commodity road asphalt at 22 DEG C；Belonging to the well at 22 DEG C Chemical agent composition described in 10% is added in Reservoir Crude Oil sample, 10 DEG C of the well crude oil freezing point can be reduced, it is reduced and analyses wax 8 DEG C of point, reduces its 10 DEG C of asphalitine phase Precipitation Temperature, illustrates that the chemical agent composition is by asphalitine phase and wax at 22 DEG C Brilliant effectively fusing (or dissolving)；It can thus be appreciated that：The chemical agent composition can be by the pitch of the affiliated Reservoir Crude Oil oil sample of the well Matter phase fusion temperature is down to 22 DEG C by 30 DEG C, reduces its 8 DEG C of asphalitine phase fusion temperature, can be by the dewaxing temperature of the well oil sample 22 DEG C are down to by 28 DEG C, 6 DEG C of its dewaxing temperature is reduced；
Calculating shows：45~55 DEG C of 500 tons of clear water are added in the well, the oil reservoir in 10 meters of radius around the well can be made Temperature improves more than 3 DEG C, it was maintained at more than 23 DEG C in 48 hours, higher than the chemical agent composition fusing (or dissolving) More than 1 DEG C of the brilliant temperature of asphalitine phase and wax；It can thus be appreciated that：45~55 DEG C of clear water can be the chemical agent composition fusing (or dissolving) asphalitine phase and wax crystalline substance create thermal condition；
Therefore, the chemical agent composition and 45~55 DEG C of clear water joint synergies, can be by radius 10 around the well Asphalitine phase and wax the crystalline substance fusing (or dissolving) separated out in rice in oil reservoir, effectively reduces the freezing point of its crude oil, wax precipitation point, pitch Matter phase Precipitation Temperature；
The well using technical scheme of the present invention after 3 days opening well and making production gone out crude oil, actual tests detection shows：The well 20 DEG C of viscosity of crude 150mP.s of actual oil sample when producing 3 months, are the 1.4% of the well crude oil original viscosity, wax precipitation temperature is 18 DEG C, 5 DEG C are reduced than its affiliated original wax precipitation temperature of Reservoir Crude Oil, asphalitine phase Precipitation Temperature is 16 DEG C, than its fossil bitumen Matter phase Precipitation Temperature reduces by 11 DEG C, is below reservoir temperature around the well, therefore will not separate out in oil reservoir around the well pitch Matter phase and wax are brilliant；
The well applies normal production 6 months after technical scheme of the present invention, adds up Liquid output 470 in by the end of July, 2008 to Ton, adds up 230 tons of crude oil extraction, the residual crude oil around water injection well in oil reservoir has been obtained effective exploitation, economic benefit is extremely Significantly.
The production practices of open source information and oil field show：Can mutually it be changed between water injection well and oil well；Therefore oil well energy The method water injection well enough applied can equally be applied；Therefore, it is heretofore described other as " passed through water injection well existing method (as pump) will chemical agent and hot fluid add respectively or/and after mixing in oil reservoir ", " pass through water filling casing existing method (as pump) adds chemical agent and hot fluid in oil reservoir ", " by injection well tubing with existing method (as pumped) by chemical agent Added with hot fluid in oil reservoir ", " it is first that special gas is added into water filling casing, then by injection well tubing into oil reservoir Add chemical agent and hot fluid ", " by water injection well, chemical agent and hot fluid are periodically added into oil reservoir ", " in order to will note Oil extraction in well control oil reservoir comes out, and then realizes the purpose of effective heavy crude producing type oil reservoir, first changes water injection well For oil well, water injection well is then controlled into oil with afore mentioned chemical agent in the present invention-hot fluid joint huff and puff oil recovery mode (or technique) Layer in oil extraction come out " etc. method effect it can be anticipated that.
Embodiment 11
A kind of exploitation method of thick oil type oil deposit, comprises the following steps：In order to prevent hot fluid from causing the clay in oil reservoir swollen It is swollen and increase crude oil seepage flow resistance, chemical agent, expansion-resisting agent and hot fluid are added into oil reservoir, to melt in (or dissolving) oil reservoir Asphalitine phase and wax are brilliant, reduce the asphalitine phase Precipitation Temperature and wax precipitation temperature of oil reservoir Crude Oil, and reduction hot fluid adds oil reservoir In caused by clay swell, make the smooth seepage flow of the crude oil in oil reservoir to oil well, then lifted from oil well crude oil with existing method To ground.
The chemical agent is 1- methyl naphthalene of the weight than 25%, 20% 0# diesel oil, 2% chlorination dodecylbenzyl diformazan Base ammonium, 3% polyoxyethylated alkyl alcohol, the emulsion of 50% clear water mixing and emulsifying；The hot fluid is 75~80 DEG C of oil Field sewage；The expansion-resisting agent is that weight is dissolved in the aqueous solution being made in 70% water than 30% potassium chloride；
The expansion-resisting agent is containing 20% potassium chloride, 5% ammonium chloride, 1% aluminium polychloride, 1% chlorination dodecyl ammonium The aqueous solution.
So that careless 109- equals the 1 well application present invention as an example：
The open source information of Shengli Oil Field shows：Careless 109- puts down 1 well and belongs to the newly-built horizontal well of the careless bridge zone block of Shengli Oil Field；Careless bridge 50 DEG C of block oil reservoir original temperature, its 50 DEG C of degassed crude viscosity of indoor actual measurement are 40000mP.s, asphalitine phase Precipitation Temperature 70 DEG C, belong to Extra-heavy oil reservoir；Therefore, reservoir temperature is less than its 20 DEG C of asphalitine phase Precipitation Temperature around the well, and crude oil is in oil reservoir Asphalitine phase is separated out, the asphalitine separated out is met Severe blockage oil reservoir seepage flow hole, causes reservoir permeability significantly to drop Low, the crude oil in oil reservoir is difficult to smooth seepage flow to oil well；Therefore, elimination or fusing carburetion layer if the well is not adopted an effective measure In the asphalitine phase that has separated out, and prevent asphalitine from mutually separating out herein, oil reservoir feed flow will be caused difficult, cause oil well can not be just Often production；The means of production of the block show：The block either common straight well or horizontal well, with steam soak thermal recovery work Skill is recovered the oil, and power consumption is big, and cost for oil production is high, and oil production is low.
The geologic information of the block：The just residing careless bridge zone block oil reservoir of the well is argillaceous agglutination, clay mineral content 7.5%, the quick property of water-sensitive, salt is medium partially strong, so if a large amount of injection secondary waters into the oil reservoir, can cause the clay in oil reservoir Mineral expand (i.e. so-called water-sensitive), and reservoir permeability, the resistance of increase crude oil seepage flow to oil well is greatly reduced.
High in order to solve careless bridge zone block steam soak thermal recovery technology cost for oil production, the low production problem of oil production is prevented Only hot fluid causes the clay swell in oil reservoir, improves the fluid supply capacity of oil reservoir, makes the smooth seepage flow of the crude oil in oil reservoir to oil well, Oil well is allowed normally to produce, the well has carried out pilot production on January 20th, 2006 using the present invention, and its technical scheme is：First will 20% potassium chloride, 8% ammonium chloride, 1% aluminium polychloride, 1% chlorination dodecyl ammonium are dissolved in 70% water that expansion-resisting agent is made is standby With, then by 25% 1- methyl naphthalenes, 20% 0# diesel oil, 2% chlorination dodecylbenzyl Dimethyl Ammonium, 3% polyoxyethylene alkane Base alcohol ether, 50% clear water mixing and emulsifying are standby into chemical agent；Then first squeezed into the casing with high-pressure pump and (be commonly called as anti-squeeze) 20 tons of expansion-resisting agents, then 40 tons of chemical agents are squeezed into the casing, expansion-resisting agent is pushed into oil reservoir using the chemical agent；Then, 75~80 DEG C of 1000 tons of oilfield sewages are squeezed into the casing with high-pressure pump again, the chemical agent in sleeve pipe are pushed away using the sewage Enter in oil reservoir and mixed with chemical agent, expansion-resisting agent in oil reservoir；Glued using expansion-resisting agent reduction oilfield sewage is caused in oil reservoir Soil expansion, the asphalitine phase and wax in (or dissolving) oil reservoir are melted using the joint synergy of chemical agent and the oilfield sewage Crystalline substance, it is brilliant to melt asphalitine phase and wax in (or dissolving) oil reservoir, reduce asphalitine phase Precipitation Temperature and the analysis of oil reservoir Crude Oil Wax temperature, reduction oilfield sewage adds clay swell caused by oil reservoir, makes the smooth seepage flow of the crude oil in oil reservoir to oil well, then use Crude oil is promoted to ground by existing method from oil well；
Laboratory test shows：Contain 20% potassium chloride, 5% ammonium chloride, 1% aluminium polychloride, 1% chlorination dodecyl ammonium The density of the aqueous solution, which is more than, is set forth in chemical agent, therefore, it is possible to which expansion-resisting agent is pushed into oil reservoir with the chemical agent；
Experiment shows：Described 20 DEG C of density of chemical agent are more or less the same with oilfield sewage；Because oilfield sewage enters oil well oil It is a kind of Turbulence Flow state after pipe, can constantly mixes, emulsify in oil pipe with the chemical agent, although therefore the oil field is dirty Coolant-temperature gage is up to 75~80 DEG C, can influence the stability of emulsion, but still can be pushed away the chemical agent with the oilfield sewage Enter in oil reservoir；
Laboratory test and open source information show：The asphalitine phase fusion temperature of the well crude oil sample is 78 DEG C；In the well 50 Added in DEG C crude oil sample 10% the chemical agent, 24 DEG C of the well crude oil asphaltenes phase Precipitation Temperature can be reduced, illustrate 50 The chemical agent is by asphalitine mutually effectively fusing (or dissolving) at DEG C；It can thus be appreciated that：The chemical agent can be by well oil The asphalitine phase fusion temperature of sample is down to 50 DEG C, 28 DEG C of reduction asphalitine phase fusion temperature by 78 DEG C；
Calculating shows：75~80 DEG C of 1000 tons of oilfield sewages are added in oil reservoir by the casing, well week can be made The reservoir temperature enclosed in 12 meters of radius improves more than 5 DEG C, it was maintained at more than 55 DEG C in 48 hours, higher than the well crude oil sample More than 5 DEG C of the asphalitine phase fusion temperature of product；It can thus be appreciated that：75~80 DEG C of oilfield sewages can melt for the chemical agent composition Change (or dissolving) asphalitine and mutually create thermal condition；
Therefore, the chemical agent and 75~80 DEG C of oilfield sewage joint synergies, can be 12 meters by radius around the well The asphalitine separated out in interior oil reservoir mutually melts (or dissolving), effectively reduces freezing point, the asphalitine phase Precipitation Temperature of its crude oil；
The well shows using technical scheme of the present invention opening well and making production after 7 days, actual tests detection：The well produces 3 50 DEG C of degassing viscosity of actual oil sample during the moon are 3500mPa.s, are the 8.75% of its original 50 DEG C of degassings viscosity, asphalitine is mutually analysed Go out temperature for 46 DEG C, it is lower 24 DEG C than its fossil bitumen matter phase Precipitation Temperature, it is lower than reservoir temperature around the well 4 DEG C, therefore at this Reservoir temperature will not separate out asphalitine phase around well；50 DEG C of actual oil sample degassing viscosity when the well is produced 6 months are 5000mPa.s, less than the 13% of its original 50 DEG C of degassings viscosity, asphalitine phase Precipitation Temperature is 48 DEG C, than its fossil bitumen matter Phase Precipitation Temperature is low 22 DEG C, lower than reservoir temperature around the well 2 DEG C, therefore will not separate out in oil reservoir around the well asphalitine Phase；
The mill trial results show：The well is used after technical scheme of the present invention, and oil reservoir seepage flow fluid supply capacity is significantly Improve, effect of increasing production is extremely notable, and effective time has reached 6 months, add up 2150 tons of Liquid output, add up crude oil extraction 1050 Ton, economic benefit is extremely notable；Efficiently solve that careless bridge zone block steam soak thermal recovery technology cost for oil production is high, oil production is low Production problem.
The practice of construction as shown by data of the well：Disposably added into oil reservoir with the flow of 8-12 ton hours with high-pressure pump 75~80 DEG C of 1000 tons of oilfield sewages, operation pressure is 17-20MPa, will not press and wear the well oil reservoir；The oil well belongs to level oil Well, well head is in construction without the obvious lifting of appearance；Therefore damage level oil well well will not be produced by implementing technical solution of the present invention The defect of cylinder and casing programme.
Embodiment 12
A kind of exploitation method of thick oil type oil deposit, comprises the following steps：Chemical agent and hot fluid are added into oil reservoir, meanwhile, Contain energy to improve in temperature of the hot fluid in oil reservoir, the heat loss that reduction hot fluid enters before oil reservoir, the hot fluid Enough occurs the heat energy releasing agent of thermal chemical reaction；
The chemical agent is the water-soluble thinner of commodity that principle active component is dodecyltrimethyl；It is described Hot fluid is 60~65 DEG C of clear water；
Described heat energy releasing agent is natrium nitrosum and ammonium chloride 1：1 mixture.
By taking D4-X2 application present invention as an example：
D4-X2 wells belong to Fularchi Oilfield, and after in September, 2007 is built up, original can not be produced with common oil production method Oil；Using steam oil production method, 350 DEG C of 1500 tons of high-temperature steams are injected to oil reservoir, theoretical calculation, which is shown to be this, to be needed to burn Fall 82 tons of fuel oil, it is actual to use 85 tons of fuel oil；Normal production 2 months of recovering the oil, adds up 500 tons of Liquid output after steam injection, accumulative to open 72 tons of crude oil is adopted, crude oil is produced and is not enough to offset the fuel oil that steam injection consumes burning；Therefore, well steam soak thermal recovery Technique does not have any economic value, and the well stops using the steam soak thermodynamic oil extraction process mode of production then, and closing well leaves unused；
It is actually detected to show：20 DEG C of reservoir temperature around the well, produce 20 DEG C of viscosity 11000mP.s of crude oil sample, containing glue Matter asphalitine 32%, paraffin content 21%, 23 DEG C of wax precipitation temperature, 27 DEG C of asphalitine phase Precipitation Temperature；Therefore, oil reservoir temperature around the well Degree is less than asphalitine phase Precipitation Temperature and wax precipitation temperature, and crude oil has separated out asphalitine phase in oil reservoir and wax is brilliant, is separated out Asphalitine phase and wax brilliant Severe blockage oil reservoir seepage flow hole, causes reservoir permeability to be greatly reduced, the crude oil in oil reservoir is difficult to Smooth seepage flow is to oil well, so as to cause oil reservoir feed flow difficult, oil well can not be produced normally；
In order to solve the feed flow difficult problem of the well oil reservoir, make the smooth seepage flow of the crude oil in oil reservoir to oil well, allow the oil well Normal production, the well has carried out pilot production in March, 2008 using the present invention, and its technical scheme is：With high-pressure pump first to this Water-soluble 20 tons of the thinner (principle active component is dodecyltrimethyl) of commodity is squeezed in casing, then again to The casing squeezes 500 tons of the clear water of 60~65 DEG C of natrium nitrosum-ammonium chloride mixts containing 5% weight concentration, uses the clear water By in the chemical agent composition push-in oil reservoir in sleeve pipe；Then 40~70 DEG C of 50 tons of clear water are squeezed to the casing again, will contained In the clear water push-in oil reservoir of natrium nitrosum-ammonium chloride, it is allowed to be mixed naturally with crude oil in oil reservoir, to melt (or dissolving) oil reservoir In asphalitine phase and wax it is brilliant, reduce the asphalitine phase Precipitation Temperature and wax precipitation temperature of oil reservoir Crude Oil, make the crude oil in oil reservoir With the smooth seepage flow of mixture of chemical agent, water ground is risen to the production well, then by the production well；
Experiment shows：The chemical agent mixture density and the clear water difference containing natrium nitrosum, ammonium chloride are larger, describedization Learn agent time and 70 DEG C of hot water can form stable emulsion in several minutes；It is one because the clear water enters after oil well oil conduit Turbulence Flow state is planted, can constantly mix, emulsify in oil pipe with the chemical agent composition, although therefore the clear water temperature 60~65 DEG C, the stability of emulsion can be influenceed, but still the chemical agent can be pushed into oil reservoir with the clear water；Due to not Clear water containing natrium nitrosum, ammonium chloride is smaller than the clear water density containing natrium nitrosum, ammonium chloride, thus can use without natrium nitrosum, Clear water containing natrium nitrosum, ammonium chloride in sleeve pipe is pushed into oil reservoir by the clear water of ammonium chloride from top to bottom；
Experiment shows：The aqueous solution containing 5% natrium nitrosum, 5% ammonium chloride spontaneous can be produced in 60~65 DEG C of temperature Exothermic reaction, releases heat and nitrogen；In sour environment, the reaction speed of the reaction can be accelerated；
Experiment shows：The dewaxing temperature of the well crude oil sample is 28 DEG C, 30 DEG C of asphalitine phase fusion temperature；In 28 DEG C of the well Chemical agent composition described in 10% is added in crude oil sample, 5 DEG C of its wax precipitation point can be reduced, its asphalitine phase Precipitation Temperature is reduced 9℃；
Calculating shows：60~65 DEG C of 500 tons of clear water containing 5% natrium nitrosum, 5% ammonium chloride are added in the well, can The reservoir temperature around the well in 12 meters of radius is improved more than 11 DEG C, it was maintained at more than 31 DEG C in 48 hours, be higher than More than 1 DEG C of chemical agent fusing (or dissolving) asphalitine phase and the brilliant temperature of wax；It can thus be appreciated that：60~65 DEG C contain 5% nitrous The asphalitine phase and wax that sour sodium, the clear water of 5% ammonium chloride can be melted in (or dissolving) oil reservoir are brilliant；
Therefore, the chemical agent and 60~65 DEG C contain 5% natrium nitrosum, the clear water joint synergy of 5% ammonium chloride, energy It is enough by the asphalitine phase separated out in oil reservoir in 12 meters of radius around the well and wax crystalline substance fusing (or dissolving), effectively reduce its crude oil Freezing point, wax precipitation point, asphalitine phase Precipitation Temperature；
The well shows using technical scheme of the present invention opening well and making production after 3 days, actual tests detection：The well produces 3 20 DEG C of viscosity of crude 170mP.s of actual oil sample during the moon, are the 1.5% of the well crude oil original viscosity, and wax precipitation temperature is 17 DEG C, than Its original wax precipitation temperature reduces by 6 DEG C, and asphalitine phase Precipitation Temperature is 18 DEG C, and 9 DEG C are reduced than its fossil bitumen matter phase Precipitation Temperature, Reservoir temperature around the well is below, therefore asphalitine phase will not be separated out in oil reservoir around the well and wax is brilliant.
The well applies normal production 6 months after technical scheme of the present invention, adds up Liquid output 500 in by the end of October, 2008 to Ton, adds up 320 tons of crude oil extraction, economic benefit is extremely notable.
Embodiment 13
A kind of exploitation method of thick oil type oil deposit, comprises the following steps：In order to prevent chemical agent from largely entering hypertonic pervious bed Chemical agent is caused to waste, also for the different permeabilities oil for allowing chemical agent more uniformly to enter in same oil well or/and water injection well In layer or the different permeability positions of same oil reservoir, hole, and ensure that chemical agent and hot fluid can be added smoothly in oil reservoir, first Hot fluid is squeezed to oil well or/and water injection well or/and oil reservoir pilot scale, then adds into oil reservoir chemical agent and hot fluid, to melt (or Dissolve) asphalitine phase in oil reservoir and wax it is brilliant, reduce the asphalitine phase Precipitation Temperature and wax precipitation temperature of oil reservoir Crude Oil, make oil reservoir In the smooth seepage flow of crude oil to oil well, then allow crude oil to rise to ground from oil well.
Described examination, which is squeezed, to be referred to：Oil well or/and water injection well or/and oil reservoir are carried out experimental or exploratory or scouting property Water-filling method, is the maturation process method commonly used during oil extraction in oil field is produced.The examination, which is squeezed, can guarantee that the smooth additionization into oil reservoir Agent and hot fluid are learned, and meets the countries concerned's standard, professional standard, the requirement of the regulation of company standard.
By taking the quiet 35 blocks of east oil reservoirs in Liaohe Oil Field as an example.
Liaohe Oil Field open source information shows：Quiet 35 pieces of east oil reservoir interstitial space is mainly intergranular pore, pore throat radius For 2.83 microns, there are a small amount of corrosion hole and crack；Porosity type is that the uneven type of the thin larynx of hypertonic macropore oozes the thin larynx of macropore not with Uniform type, pore radius is generally 5~50 microns, 13 microns of average out to；Reservoir pore throat uniformity coefficient is 0.342, anisotropism Than more serious, the general 17-24% of reservoir porosity, permeability is generally 200~2000 × 10-3um2；Producing well segment length is 50 ~150 meters, 24 meters of oil reservoir average thickness, 0.1~8 meter of individual layer core intersection, 3~25 layers of the individual well oil reservoir number of plies, average mud stone folder 3.1 meters of thickness degree, there is a small amount of gas enclosure layer and water trapping layer, and most of well has more than 1 layer oil-water common-layer；
Because quiet 35 pieces of east Reservoir Crude Oil wax precipitation point is 42 DEG C, asphalitine phase Precipitation Temperature is 45 DEG C, less than the analysis wax Point, the oilfield sewage of asphalitine phase Precipitation Temperature or clear water, which enter, can aggravate oil reservoir precipitation asphalitine phase and wax in the block oil reservoir Crystalline substance, therefore the temperature of the oilfield sewage or clear water into the block oil reservoir cannot be below 45 DEG C；Accordingly, it is to utilize to be squeezed according to examination Oil pipe or sleeve pipe are carried out, by that can draw the surface temperature scope of the oilfield sewage or clear water about calculating；For example adopt With sleeve pipe examination squeeze, calculating show the oilfield sewage or clear water surface temperature be not less than 65 DEG C, examination squeeze flow be not less than 10 tons/it is small When, its temperature for entering oil reservoir will be greater than 45 DEG C, meets examination and squeezes temperature requirement；
Because water is less than low-permeability oil reservoir from oil well into the resistance of high permeability oil reservoir, therefore try crowded water meeting Preferentially enter in high permeability oil reservoir, so as to improve the resistance that chemical agent enters high permeability oil reservoir, enter chemical agent hypotonic The amount of saturating oil reservoir is relative to be improved；Accordingly, according to the different situations of every mouthful of well each oil reservoir, one of ordinary skill in the art Using existing method and data calculate and can draw the examination water squeezing amount scope of the oilfield sewage or clear water；With quiet 35-31- Exemplified by 41 wells, using the borehole logging tool data and quiet 35 pieces of geologic informations, show by calculating：10~20 tons of oil field dirts are squeezed in well examination Water can greatly improve the resistance that chemical agent enters high permeability oil reservoir, the active balance well high permeability oil reservoir and low-permeability The anisotropism of oil reservoir, enables chemical agent to enter with the speed of relative equilibrium in each oil reservoir；Accordingly, quiet 35-31-31 is determined It is 10~20 tons that oilfield sewage or clear water amount are squeezed in well examination；Oilfield sewage or clear water are squeezed by examination, solves and allows chemical agent, hot fluid More uniformly into different oil reservoirs in same oil well or/and allow different parts of the chemical agent more uniformly into same oil reservoir Problem.
Open source information shows：Water and water insoluble organic solvent such as oil, can form oil-water interface, produce interface Power；The pore throat radius of quiet 35 blocks of oil reservoirs (reservoir) intergranular pore in Liaohe Oil Field is 2.83 microns, corrosion hole and fracture pore radius one As be 5~50 microns, 13 microns of average out to belongs to capillary category, and the crude oil in oil reservoir is stored in wherein；Relevant calculating can To show；Interfacial tension or capillary force produced by oil-water interface in the radius capillary is very big；First add into oil reservoir Enter organic solvent such as oil, if there is water in capillary, the organic solvent will produce oil-hydrosphere with water formation oil-water interface Face tension force, hinders organic solvent such as the oily displacement into capillary；And because organic solvent such as oil can dissolve each other with crude oil, if hair Be present in tubule oil and it is non-aqueous, organic solvent cannot with crude oil produce interfacial tension, will not prevent organic solvent as oil The displacement into capillary；Therefore, no matter add and add chemical agent into oil reservoir again after organic solvent whether can be with organic solvent Produce new liquid-liquid interface, can all be hindered because of the presence of the oil-water interfacial tension chemical agent preferentially enter it is aqueous many or The entirely capillary of water, and can prioritizing selection enter in the capillary containing crude oil without the oil-water interfacial tension or aqueous In low tubule；Therefore, organic solvent is first added into oil reservoir, then chemical agent and hot fluid are added into oil reservoir, can be effective Chemical agent is hindered to enter water layer；It can not be played a role because chemical agent enters water layer, the amount into water layer fewer is meant that more Many chemical agents enter oil reservoir and played a role, therefore organic solvent, then the additionization into oil reservoir are added into oil reservoir with first Learn the method for agent and hot fluid is come its beneficial effect for preventing chemical agent from largely entering high permeability water layer and wasting chemical agent It can be anticipated that.
Embodiment 14
A kind of exploitation method of thick oil type oil deposit, comprises the following steps：It is to improve formation pressure and involving for hot fluid Number, first adds special gas or foam solution into oil reservoir, then adds chemical agent and hot fluid into oil reservoir, to melt (or dissolving) Asphalitine phase and wax in oil reservoir is brilliant, reduces the asphalitine phase Precipitation Temperature and wax precipitation temperature of oil reservoir Crude Oil, makes in oil reservoir Then the smooth seepage flow of crude oil allow crude oil to rise to ground from oil well to oil well；
The foam solution is less than 5MPa nitrogen by pressure and is made up of 5% lauryl sodium sulfate and 95% clear water Expanding foam solution is made in the high pressure line of ground；The chemical agent is the oil-soluble oil displacement agent that main component is luxuriant and rich with fragrance organic solution； The hot fluid is 50~60 DEG C of clear water.
By taking the D5-X5 application present invention as an example：
D5-X5 wells belong to Fularchi Oilfield, and after in September, 2007 is built up, crude oil can not be produced with common oil production method； Using steam oil production method, 350 DEG C of 1500 tons of high-temperature steams are injected to oil reservoir, theoretical calculation, which is shown to be this, to be needed to burn up combustion 82 tons of material oil, it is actual to use 85 tons of fuel oil；Normal production 2 months of recovering the oil, adds up 400 tons of Liquid output, adds up exploitation former after steam injection 60 tons of oil, produces crude oil and is not enough to offset the fuel oil that steam injection consumes burning；Therefore, well steam soak thermal recovery technology There is no any economic value, the well stops using the steam soak thermodynamic oil extraction process mode of production then, and closing well leaves unused；
It is actually detected to show：20 DEG C of reservoir temperature around the well, produce 20 DEG C of viscosity 11000mP.s of crude oil sample, containing glue Matter asphalitine 32%, paraffin content 21%, 23 DEG C of wax precipitation temperature, 27 DEG C of asphalitine phase Precipitation Temperature；Therefore, oil reservoir temperature around the well Degree is less than asphalitine phase Precipitation Temperature and wax precipitation temperature, and crude oil has separated out asphalitine phase in oil reservoir and wax is brilliant, is separated out Asphalitine phase and wax brilliant Severe blockage oil reservoir seepage flow hole, causes reservoir permeability to be greatly reduced, the crude oil in oil reservoir is difficult to Smooth seepage flow is to oil well, so as to cause oil reservoir feed flow difficult, oil well can not be produced normally；
In order to solve the feed flow difficult problem of the well oil reservoir, make the smooth seepage flow of the crude oil in oil reservoir to oil well, allow the oil well Normal production, the well has carried out pilot production in April, 2008 using the present invention, and its technical scheme is：By 10000 standard cubes Rice pressure is less than 5MPa nitrogen and 20 tons of expanding foam solution being made up of 5% lauryl sodium sulfate, 95% clear water in ground high pressure Foam solution is made in pipeline, is then injected the foam solution in oil reservoir from the casing with existing method；Then again to the well Sleeve pipe squeezing main component is 10 tons of the commodity oil-soluble oil displacement agent of luxuriant and rich with fragrance organic solution；Then again to the casing squeezing 50~ 60 DEG C of 400 tons of clear water are no more than the 12MPa standard cubic meter of nitrogen 10000 with pressure, with the clear water and nitrogen by sleeve pipe In foam solution, oil displacement agent push-in oil reservoir；Foam solution, oil displacement agent, 50~60 DEG C of clear water are allowed to be mixed naturally with crude oil in oil reservoir, with The asphalitine phase and wax melted in (or dissolving) oil reservoir is brilliant, reduces the asphalitine phase Precipitation Temperature and analysis wax temperature of oil reservoir Crude Oil Degree, improves the sweep efficiency of formation pressure and water, crude oil and oil displacement agent in oil reservoir, foam solution, the mixture of water is smoothly oozed The production well is flow to, then ground is risen to by the production well.
Experiment shows：Although the oil displacement agent can be by the foam solution separated and dissolved into liquids and gases, by institute It is a kind of Turbulence Flow state to state clear water to enter after oil well oil conduit, can constantly be mixed in oil pipe with foam solution, oil displacement agent, nitrogen Close, emulsify, therefore, it is possible to which the foam solution, oil displacement agent, nitrogen are pushed into oil reservoir with the clear water；
Open source information shows：High pressure nitrogen can lead to the expanding foam solution being made up of 5% lauryl sodium sulfate, 95% clear water Cross special ejector, foam maker and high-pressure foam liquid is formed in the high pressure line of ground；
Experiment shows：The dewaxing temperature of the well crude oil sample is 28 DEG C, 30 DEG C of asphalitine phase fusion temperature；In 22 DEG C of the well Oil displacement agent described in adding 10% in crude oil sample, can reduce by 5 DEG C of its wax precipitation point, reduce its 10 DEG C of asphalitine phase Precipitation Temperature；
Calculating shows：50~60 DEG C of 400 tons of clear water are added in the well, the oil reservoir in 12 meters of radius around the well can be made Temperature improves more than 5 DEG C, it was maintained at more than 25 DEG C in 48 hours, oil displacement agent fusing (or dissolving) the asphalitine phase and More than 3 DEG C of the temperature of wax crystalline substance；It can thus be appreciated that：50~60 DEG C of clear water can melt asphalitine phase and wax in (or dissolving) oil reservoir It is brilliant；
Therefore, the oil displacement agent and 50~60 DEG C of clear water joint synergies, can be by oil in 12 meters of radius around the well Asphalitine phase and wax the crystalline substance fusing (or dissolving) separated out in layer, freezing point, wax precipitation point, the asphalitine for effectively reducing its crude oil is mutually analysed Go out temperature；
The well shows using technical scheme of the present invention opening well and making production after 3 days, actual tests detection：The well produces 3 20 DEG C of viscosity of crude 130mP.s of actual oil sample during the moon, are the 1% of the well crude oil original viscosity, wax precipitation temperature is 17 DEG C, than it Original wax precipitation temperature reduces by 6 DEG C, and asphalitine phase Precipitation Temperature is 17 DEG C, and 10 DEG C are reduced than its fossil bitumen matter phase Precipitation Temperature, Reservoir temperature around the well is below, therefore asphalitine phase will not be separated out in oil reservoir around the well and wax is brilliant；
The well applies normal production 6 months after technical scheme of the present invention, adds up Liquid output 700 in by the end of October, 2008 to Ton, adds up 500 tons of crude oil extraction, economic benefit is extremely notable.
Embodiment 15
A kind of exploitation method of thick oil type oil deposit, comprises the following steps：Formation pressure, reduction oil are improved with liquid carbon dioxide Viscosity of crude in layer, first adds Specialty Chemical agent into oil reservoir, then adds liquid carbon dioxide into oil reservoir, then to oil reservoir Middle addition hot fluid, brilliant to melt asphalitine phase and wax in (or dissolving) oil reservoir, the asphalitine of reduction oil reservoir Crude Oil is mutually analysed Go out temperature and wax precipitation temperature, improve formation pressure energy, make the smooth seepage flow of the crude oil in oil reservoir to oil well, then will with existing method Crude oil is promoted to ground from oil well；
The Specialty Chemical agent be 10% n-butyl ether, 50% mixing heavy benzene, 10% methyln-hexyl ketone, 10% fusel oil, The chemical agent that 10% dimethylnaphthalene, 10%1- methyl naphthalenes are mixed；The hot fluid is 80~90 DEG C of oilfield sewages；
By taking the D5-X3 application present invention as an example：
D5-X3 wells belong to Fularchi Oilfield, and after in October, 2007 builds up, original can not be produced with common oil production method Oil；Using steam oil production method, 350 DEG C of 1500 tons of high-temperature steams are injected to oil reservoir, theoretical calculation, which is shown to be this, to be needed to burn Fall 82 tons of fuel oil, it is actual to use 85 tons of fuel oil；Normal production 2 months of recovering the oil, adds up 400 tons of Liquid output after steam injection, accumulative to open 30 tons of crude oil is adopted, crude oil is produced and is not enough to offset the fuel oil that steam injection consumes burning；Therefore, well steam soak thermal recovery Technique does not have any economic value, and the well stops using the steam soak thermodynamic oil extraction process mode of production then, and closing well leaves unused；
It is actually detected to show：20 DEG C of reservoir temperature around the well, produce 20 DEG C of viscosity 11000mP.s of crude oil sample, containing glue Matter asphalitine 32%, paraffin content 21%, 23 DEG C of wax precipitation temperature, 27 DEG C of asphalitine phase Precipitation Temperature；Therefore, oil reservoir temperature around the well Degree is less than asphalitine phase Precipitation Temperature and wax precipitation temperature, and crude oil has separated out asphalitine phase in oil reservoir and wax is brilliant, is separated out Asphalitine phase and wax brilliant Severe blockage oil reservoir seepage flow hole, causes reservoir permeability to be greatly reduced, the crude oil in oil reservoir is difficult to Smooth seepage flow is to oil well, so as to cause oil reservoir feed flow difficult, oil well can not be produced normally；
In order to solve the feed flow difficult problem of the well oil reservoir, make the smooth seepage flow of the crude oil in oil reservoir to oil well, allow the oil well Normal production, the well has carried out pilot production in April, 2008 using the present invention, and its technical scheme is：With high-pressure pump to the well Injected in sleeve pipe by 10% n-butyl ether, 50% mixing heavy benzene, 10% methyln-hexyl ketone, 10% fusel oil, 10% dimethylnaphthalene, 20 tons of the chemical agent composition that 10%1- methyl naphthalenes are mixed, oil reservoir is pushed back with the chemical agent composition by the water in oil well In；Then 50 tons of liquid carbon dioxide is squeezed to the casing with carbon dioxide special high-pressure pump again, will with liquid carbon dioxide Chemical agent composition is promoted in oil reservoir；Then 80~90 DEG C of 600 tons of oilfield sewages are injected into the casing with high-pressure pump again, used Liquid carbon dioxide in sleeve pipe is pushed into oil reservoir by the clear water；Liquid carbon dioxide, chemical agent, 80~90 DEG C of clear water are allowed in oil Mixed naturally with crude oil in layer, it is brilliant to melt asphalitine phase and wax in (or dissolving) oil reservoir, reduce the pitch of oil reservoir Crude Oil Matter phase Precipitation Temperature and wax precipitation temperature and viscosity, improve formation pressure energy, make crude oil and carbon dioxide, the chemistry in oil reservoir Agent, the smooth seepage flow of mixture of water rise to ground to the production well, then by the production well；
Open source information shows：Commodity liquid carbon dioxide can the accumulating more than -10 DEG C, CO 2 reduction crude oil glue Degree；
Experiment shows：Liquid carbon dioxide is suitable with the chemical agent mixture density, therefore, it is possible to use liquid titanium dioxide Carbon promotes the chemical agent composition in sleeve pipe in oil reservoir from top to bottom；Because liquid carbon dioxide runs into 80~90 DEG C clearly Water can be vaporized, dissolved, therefore, it is possible to which liquid carbon dioxide is pushed into oil reservoir with the clear water；
Experiment shows：The dewaxing temperature of the well crude oil sample is 28 DEG C, 30 DEG C of asphalitine phase fusion temperature；The chemical agent Mixture can dissolve (or dissolving) commodity pitch and commodity road asphalt at 22 DEG C；Added in 22 DEG C of crude oil samples of the well Chemical agent composition, can reduce by 6 DEG C of its wax precipitation point, reduce its 12 DEG C of asphalitine phase Precipitation Temperature described in 10%；Illustrate 22 DEG C Under the chemical agent composition by the brilliant effectively fusing (or dissolving) of asphalitine phase and wax；
Calculating shows：50 tons of liquid carbon dioxide is added in oil reservoirs, oil reservoir in 12 meters of radius can be made around the well 1 DEG C of temperature drop, it is not less than -15 DEG C in the limit minimum temperature of oil reservoir；
Calculating shows：80~90 DEG C of 600 tons of oilfield sewages are added in the well, 50 tons of liquid carbon dioxide vapour can be supplemented Change institute from oil reservoir absorb heat, and can make around the well in 12 meters of radius reservoir temperature raising more than 5 DEG C, make it 48 More than 25 DEG C are maintained in hour, higher than chemical agent composition fusing (or dissolving) the asphalitine phase and 3 DEG C brilliant of temperature of wax More than；It can thus be appreciated that：The asphalitine phase and wax that 80~90 DEG C of oilfield sewage can be melted in (or dissolving) oil reservoir are brilliant；
Therefore, the chemical agent composition and 80~90 DEG C of oilfield sewage joint synergy, can be by around the well Asphalitine phase and wax the crystalline substance fusing (or dissolving) separated out in 12 meters of radius in oil reservoir, effectively reduces freezing point, the analysis wax of its crude oil Point, asphalitine phase Precipitation Temperature；
The well shows using technical scheme of the present invention opening well and making production after 5 days, actual tests detection：The well produces 3 20 DEG C of viscosity of crude 110mP.s of actual oil sample during the moon, are the 1% of the well crude oil original viscosity, wax precipitation temperature is 16 DEG C, than it Original wax precipitation temperature reduces by 7 DEG C, and asphalitine phase Precipitation Temperature is 14 DEG C, and 13 DEG C are reduced than its fossil bitumen matter phase Precipitation Temperature, Reservoir temperature around the well is below, therefore asphalitine phase will not be separated out in oil reservoir around the well and wax is brilliant；
The well applies normal production 7 months after technical scheme of the present invention, adds up Liquid output 800 in by the end of November, 2008 to Ton, adds up 630 tons of crude oil extraction, economic benefit is extremely notable.
Embodiment 16
A kind of exploitation method of thick oil type oil deposit, comprises the following steps：In order to more effectively reduce drip of the crude oil in oil reservoir Blue or green matter phase Precipitation Temperature and wax precipitation temperature, first add peroxide aqueous solution, then the addition chemistry into oil reservoir oil reservoir into oil reservoir Agent and hot fluid；
The peroxide aqueous solution is 70~80 DEG C of clear water of the 1wt% containing carbamide peroxide；The chemical agent is respectively Dibenzoyl peroxide containing 1wt% -99wt% 1- methyl naphthalenes mixed liquor and the melt liquid of polyoxethylene octylphenyl phenol ether -10； The hot fluid is 70~80 DEG C of oilfield sewages and 70~80 DEG C of oilfield sewages containing 0.2% hydrogen peroxide respectively；
By taking the 705-1 wells application present invention as an example：
705-1 wells belong to Fularchi Oilfield, and after in June, 2006 builds up, crude oil can not be produced with common oil production method； Using steam oil production method, 350 DEG C of 1500 tons of high-temperature steams are injected to oil reservoir, theoretical calculation, which is shown to be this, to be needed to burn up combustion 82 tons of material oil, it is actual to use 85 tons of fuel oil；Normal production 2 months of recovering the oil, adds up 400 tons of Liquid output, adds up exploitation former after steam injection 80 tons of oil, produces crude oil and is not enough to offset the fuel oil that steam injection consumes burning；Therefore, well steam soak thermal recovery technology There is no any economic value, the well stops using the steam soak thermodynamic oil extraction process mode of production then, and closing well leaves unused；
It is actually detected to show：20 DEG C of reservoir temperature around the well, produce 20 DEG C of viscosity 11000mP.s of crude oil sample, containing glue Matter asphalitine 32%, paraffin content 21%, 23 DEG C of wax precipitation temperature, 27 DEG C of asphalitine phase Precipitation Temperature；Therefore, oil reservoir temperature around the well Degree is less than asphalitine phase Precipitation Temperature and wax precipitation temperature, and crude oil has separated out asphalitine phase in oil reservoir and wax is brilliant, is separated out Asphalitine phase and wax brilliant Severe blockage oil reservoir seepage flow hole, causes reservoir permeability to be greatly reduced, the crude oil in oil reservoir is difficult to Smooth seepage flow is to oil well, so as to cause oil reservoir feed flow difficult, oil well can not be produced normally；
In order to solve the feed flow difficult problem of the well oil reservoir, make the smooth seepage flow of the crude oil in oil reservoir to oil well, allow the oil well Normal production, the well has carried out pilot production in April, 2008 using the present invention, and its technical scheme is：First with high-pressure pump to this 70~80 DEG C of 50 tons of clear water of the 1wt% containing carbamide peroxide are injected in casing；Injected and contained into the casing with high-pressure pump again 10 tons of the 1- methyl naphthalenes mixed liquor of 1wt% dibenzoyl peroxides and 99wt%；Again 70 are injected with high-pressure pump into the casing ~80 DEG C of 100 tons of oilfield sewages, carbamide peroxide, dibenzoyl peroxide, 1- methyl naphthalenes are pushed into oil reservoir；High-pressure pump is used again Into the casing, implantation temperature is 40 DEG C of 10 tons of -10 melt liquid of polyoxethylene octylphenyl phenol ether；Again with high-pressure pump to this Inject 70~80 DEG C of 100 tons of oilfield sewages in casing the melt liquid of polyoxethylene octylphenyl phenol ether -10 is pushed into oil reservoir；Again 100 tons of 70~80 DEG C of oilfield sewages containing 0.2% hydrogen peroxide are injected into the casing with high-pressure pump；Again with high-pressure pump to this Casing injects 70~80 DEG C of 150 tons of oilfield sewages；It is brilliant to melt asphalitine phase and wax in (or dissolving) oil reservoir, reduce oil reservoir The asphalitine phase Precipitation Temperature and wax precipitation temperature of Crude Oil, make crude oil and chemical agent, the smooth seepage flow of mixture of water in oil reservoir Ground is risen to the production well, then by the production well；
Open source information shows：The porosity 33% of the well, permeability is 1200~2000 × 10-3um2, oil reservoir natural energy Viscosity of crude under deficiency, oil reservoir is 11000mPa.S, and crude oil has certain fluidity in oil reservoir；
Open source information shows：Although carbamide peroxide, hydrogen peroxide, dibenzoyl peroxide can be released from former by oxygen Son, the micro heavy ion that temperature can speed up in the reaction speed, oil reservoir can also accelerate the reaction speed, but due to its Concentration in sewage is very low, and produced reaction pressure can be to can absorb by oil reservoir, and oil well, oil reservoir will not be caused harm, Therefore, it is possible to applied in the well oil reservoir；
Although carbamide peroxide, hydrogen peroxide, dibenzoyl peroxide can decompose polyoxethylene octylphenyl phenol ether -10, But because the technical scheme is isolated with 100 tons of sewage, therefore carbamide peroxide, hydrogen peroxide, diphenyl peroxide first Acyl reacts before polyoxethylene octylphenyl phenol ether -10 is run into oil reservoir to be finished, will not severe decomposition polyoxethylene octylphenyl Phenol ether -10；
Experiment shows：Polyoxethylene octylphenyl phenol ether -10 is water insoluble, but can form emulsion with water, oil, therefore, it is possible to Effectively reduction carbamide peroxide, hydrogen peroxide, the decomposition of dibenzoyl peroxide, can also be promoted in oil reservoir by sewage；
Laboratory test shows：1- methyl naphthalene density is suitable with sewage, can be promoted by sewage in oil reservoir；
Relevant information and experiment show：Less than 100 DEG C, carbamide peroxide, hydrogen peroxide, dibenzoyl peroxide can be preferential Macromolecular substances such as asphalitine, colloid, wax molecule are decomposed, therefore can not largely decompose 1- methyl naphthalenes and offset its effect；
Experiment shows：The dewaxing temperature of the well crude oil sample is 28 DEG C, 30 DEG C of asphalitine phase fusion temperature；In 22 DEG C of the well 1- methyl naphthalene mixed liquors described in adding 10% in crude oil sample, can reduce by 7 DEG C of its wax precipitation point, reduce its asphalitine and mutually separate out temperature 12 DEG C of degree；
Calculating shows：70~80 DEG C of 500 tons of oilfield sewages are added in the well, can be made around the well in 12 meters of radius Reservoir temperature improves more than 5 DEG C, it was maintained at more than 25 DEG C in 48 hours, higher than 1- methyl naphthalenes mixed liquor fusing More than 3 DEG C of the brilliant temperature of (or dissolving) asphalitine phase and wax；It can thus be appreciated that：70~80 DEG C of oilfield sewage can melt (or molten Change) asphalitine phase in oil reservoir and wax it is brilliant；
Therefore, the 1- methyl naphthalenes mixed liquor and 70~80 DEG C of oilfield sewage joint synergy, can be by well week The asphalitine phase separated out in 12 meters of radius in oil reservoir and wax crystalline substance fusing (or dissolving) are enclosed, freezing point, the analysis of its crude oil is effectively reduced Wax point, asphalitine phase Precipitation Temperature；
The well shows using technical scheme of the present invention opening well and making production after 5 days, actual tests detection：The well produces 3 20 DEG C of viscosity of crude 160mP.s of actual oil sample during the moon, are the 1.5% of the well crude oil original viscosity, and wax precipitation temperature is 18 DEG C, than Its original wax precipitation temperature reduces by 5 DEG C, and asphalitine phase Precipitation Temperature is 16 DEG C, than its fossil bitumen matter phase Precipitation Temperature reduction by 11 DEG C, reservoir temperature around the well is below, therefore asphalitine phase will not be separated out in oil reservoir around the well and wax is brilliant；
The well applies normal production 6 months after technical scheme of the present invention, adds up Liquid output 480 in by the end of November, 2008 to Ton, adds up 310 tons of crude oil extraction, economic benefit is extremely notable.
It should be noted that during described chemical agent addition peroxide, it is impossible to contain high molecular surfactant and poly- Compound.
Described peroxide should ensure that it can decomposite free oxygen in oil reservoir or can destroy asphaltene molecules, wax Molecule carbon chain or the structure that asphalitine phase can be destroyed, and ensure that it meets in chemical agent and/or hot fluid application is added to The countries concerned's standard, professional standard, the requirement of the regulation of company standard.
Embodiment 17
A kind of exploitation method of thick oil type oil deposit, comprises the following steps：In order to improve formation pressure, first added into oil reservoir lazy Property the gas release agent aqueous solution, then chemical agent and hot fluid are added into oil reservoir, to melt the asphalitine in (or dissolving) oil reservoir It is mutually brilliant with wax, the asphalitine phase Precipitation Temperature and wax precipitation temperature of oil reservoir Crude Oil are reduced, formation pressure is improved, makes the original in oil reservoir Crude oil is promoted to ground by oily smoothly seepage flow to oil well, then with existing method from oil well；
The chemical agent is the water-soluble pour-point depressant of commodity；The hot fluid is 70~80 DEG C of oilfield sewages；The indifferent gas Body releasing agent is the normal temperature oilfield sewage solution of the ammonium nilrite containing 3wt% and 30~40 DEG C of oil fields of the ammonium carbonate containing 5wt% respectively Two kinds of sewage solution；
Open source information shows：The reaction when heated of ammonium nilrite crystal is accelerated, and can be exploded when more than 60 DEG C；Ammonium nitrate Ammonium nilrite can be resolved into more than 110 DEG C；Therefore, the ammonium nilrite of concentration more than 10%, aqueous ammonium nitrate solution have danger Dangerous, relevant oilfield enterprise's standard regulation can be violated with requiring by being added into oil reservoir, be not belonging to indifferent gas of the present invention Body releasing agent category, and no more than 10 tons of the maximum adding quantity of its equivalent 100% sterling.
By taking the D6-X3 wells application present invention as an example：
D6-X3 wells belong to Fularchi Oilfield, and after in November, 2007 builds up, original can not be produced with common oil production method Oil；Using steam oil production method, 350 DEG C of 1500 tons of high-temperature steams are injected to oil reservoir, theoretical calculation, which is shown to be this, to be needed to burn Fall 82 tons of fuel oil, it is actual to use 85 tons of fuel oil；Normal production 2 months of recovering the oil, adds up 400 tons of Liquid output after steam injection, accumulative to open 40 tons of crude oil is adopted, crude oil is produced and is not enough to offset the fuel oil that steam injection consumes burning；Therefore, well steam soak thermal recovery Technique does not have any economic value, and the well stops using the steam soak thermodynamic oil extraction process mode of production then, and closing well leaves unused；
It is actually detected to show：20 DEG C of reservoir temperature around the well, produce 20 DEG C of viscosity 11000mP.s of crude oil sample, containing glue Matter asphalitine 32%, paraffin content 21%, 23 DEG C of wax precipitation temperature, 27 DEG C of asphalitine phase Precipitation Temperature；Therefore, oil reservoir temperature around the well Degree is less than asphalitine phase Precipitation Temperature and wax precipitation temperature, and crude oil has separated out asphalitine phase in oil reservoir and wax is brilliant, is separated out Asphalitine phase and wax brilliant Severe blockage oil reservoir seepage flow hole, causes reservoir permeability to be greatly reduced, the crude oil in oil reservoir is difficult to Smooth seepage flow is to oil well, so as to cause oil reservoir feed flow difficult, oil well can not be produced normally；
In order to solve the feed flow difficult problem of the well oil reservoir, make the smooth seepage flow of the crude oil in oil reservoir to oil well, allow the oil well Normal production, the well has carried out pilot production in May, 2008 using the present invention, and its technical scheme is：First with high-pressure pump to this Water-soluble 20 tons of the pour-point depressant of commodity is injected in casing；30 of the ammonium carbonate containing 5wt% are injected into the casing with high-pressure pump again ~40 DEG C of 100 tons of oilfield sewage solution；Inject the normal temperature oil field dirt of the ammonium nilrite containing 3wt% into the casing with high-pressure pump again 50 tons of the aqueous solution；80~90 DEG C of 550 tons of oilfield sewages are injected into the casing with high-pressure pump again；To melt (or dissolving) oil reservoir In asphalitine phase and wax it is brilliant, reduce the asphalitine phase Precipitation Temperature and wax precipitation temperature of oil reservoir Crude Oil, make the crude oil in oil reservoir To the production well, then by the production well ground is risen to the smooth seepage flow of mixture of inert gas, chemical agent, water；
Open source information shows：The porosity 33% of the well, permeability is 1200~2000 × 10-3um2, oil reservoir natural energy Viscosity of crude under deficiency, oil reservoir is 11000mPa.S, and crude oil has certain fluidity in oil reservoir；
Open source information shows：Although ammonium nilrite under 80~90 DEG C of environment can with ammonium carbonate fast reaction, due to Its concentration in sewage is very low, and produced reaction pressure can be to can absorb by oil reservoir, and danger will not be caused to oil well, oil reservoir Evil, therefore, it is possible to applied in the well oil reservoir；
Although the decomposition reaction of ammonium nilrite can break the polymer substance in the water-soluble thinner of meeting commodity, because should Technical scheme is isolated the water-soluble thinner of ammonium nilrite and commodity with 100 tons of ammonium carbonate solutions, after oil reservoir is entered The ammonium nilrite preferred ammonium carbonate reaction of meeting rather than the water-soluble thinner of commodity, and because the obstruction of crude oil is difficult to comprehensive engagement commodity again Water-soluble thinner, although therefore the decomposition reaction of ammonium nilrite may have certain influence to the water-soluble thinner of commodity, not It is enough to cause it to fail；
Open source information shows：Ammonium carbonate will not produce free epoxide, will not decompose the water-soluble thinner of commodity；
Experiment shows：Commodity water solubility pour-point depressant is suitable with the density of water, although less than ammonium carbonate solution, but can be with It is constantly mixed in sleeve pipe, therefore, it is possible to be promoted commodity water-soluble pour-point depressant in oil reservoir with ammonium carbonate solution；
Experiment shows：The dewaxing temperature of the well crude oil sample is 28 DEG C, 30 DEG C of asphalitine phase fusion temperature；In 28 DEG C of wells The water-soluble pour-point depressant of 10% commodity is added in crude oil sample, 5 DEG C of its wax precipitation point can be reduced, its asphalitine phase Precipitation Temperature is reduced 8℃；
Calculating shows：80~90 DEG C of 600 tons of oilfield sewages are added in the well, can be made around the well in 10 meters of radius Reservoir temperature improves more than 11 DEG C, it was maintained at more than 31 DEG C in 48 hours, higher than the asphalitine phase of the well crude oil sample More than 1 DEG C of fusion temperature；It can thus be appreciated that：80~90 DEG C of oilfield sewage can melt asphalitine phase in (or dissolving) oil reservoir and Wax is brilliant；
Therefore, the water-soluble thinner of the commodity and 70~80 DEG C of oilfield sewage joint synergy, can be by the well Separated out in 10 meters of surrounding radius in oil reservoir asphalitine phase and wax crystalline substance fusing (or dissolving), effectively reduce its crude oil freezing point, Wax precipitation point, asphalitine phase Precipitation Temperature；
The well shows using technical scheme of the present invention opening well and making production after 3 days, actual tests detection：The well produces 3 20 DEG C of viscosity of crude 190mP.s of actual oil sample during the moon, are the 1.7% of the well crude oil original viscosity, and wax precipitation temperature is 18 DEG C, than Its original wax precipitation temperature reduces by 5 DEG C, and asphalitine phase Precipitation Temperature is 18 DEG C, and 9 DEG C are reduced than its fossil bitumen matter phase Precipitation Temperature, Reservoir temperature around the well is below, therefore asphalitine phase will not be separated out in oil reservoir around the well and wax is brilliant；
The well applies normal production 5 months after technical scheme of the present invention, adds up Liquid output 580 in by the end of November, 2008 to Ton, adds up 270 tons of crude oil extraction, economic benefit is extremely notable.
Embodiment 18
A kind of exploitation method of thick oil type oil deposit, comprises the following steps：In order to release adjacent to oil well area by asphalitine phase and Oil layer blocking caused by the organic matters such as wax crystalline substance, by oil well or/and can carry out the water filling casing or/and oil of oil recovery production Pipe, 1-10 tons of chemical agents and 10-100 tons of hot fluids are added near wellbore zone oil reservoir, to release near wellbore zone oil layer blocking, The smooth seepage flow of crude oil in oil reservoir deep is entered oil well or/and the water injection well of oil recovery production can be carried out, then use existing method Crude oil is allowed to rise to ground from oil well or/and the water injection well that oil recovery production can be carried out；
The surface temperature of the chemical agent should be higher than that 25 DEG C, can be added before hot fluid in oil reservoir；
Described hot fluid surface temperature should be higher than that 80 DEG C, add oil well casing or/and oil pipe flow should be greater than 5 tons/ Hour；
Described chemical agent or/and hot fluid contains the expansion-resisting agent that 1-10 tons of valid density are no more than 50%；
The chemical agent and hot fluid are added in oil reservoir behind ground or the mixing of oil well casing or/and oil pipe.
Because chemical agent of the present invention and hot fluid can effectively reduce the asphalitine phase fusion temperature in oil reservoir and melt Wax temperature, the asphalitine phase and wax that the two synergy can be effectively melted in (or dissolving) oil reservoir is brilliant；Therefore this area is common Technical staff is according to technical scheme of the present invention and experimental data it can be anticipated that it releases adjacent to oil well area by asphalitine phase With the effect of the Organic Material Blocking oil reservoir such as wax crystalline substance.
Embodiment 19
A kind of exploitation method of thick oil type oil deposit, comprises the following steps：By oil well or/and the note of oil recovery production can be carried out Well sleeve pipe or/and oil pipe, near wellbore zone oil reservoir add 1-10 tons of normal temperature under be in a liquid state methyl naphthalene, methyl naphthalene liquid, The mixture and 50-10000 standard cubes of any one or two or more arbitrary proportion mixing of extraordinary organic liquid The mixture, is pushed into oil reservoir, to release near wellbore zone oil layer blocking, makes oil reservoir deep by rice special gas with special gas Crude oil smoothly seepage flow can enter oil well or/and can carry out the water injection well of oil recovery production, then allow with existing method crude oil from oil well Or/and can carry out rising to ground in the water injection well of oil recovery production；
Due to any one of the methyl naphthalene being in a liquid state under normal temperature of the present invention, methyl naphthalene liquid, extraordinary organic liquid Or the mixture of two or more arbitrary proportion mixing being capable of effectively melting asphalt matter phase and wax crystalline substance, and enter after oil reservoir not Solidification can be formed；Therefore those of ordinary skill in the art according to technical scheme of the present invention and experimental data it can be anticipated that its solve Except adjacent to oil well area is by the effect of the Organic Material Blocking oil reservoir such as asphalitine phase and wax crystalline substance.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not pair The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description To make other changes in different forms.Here all embodiments can not be exhaustive.It is every to belong to this hair Row of the obvious changes or variations that bright technical scheme is extended out still in protection scope of the present invention.

Claims (6)

1. a kind of exploitation method of thick oil type oil deposit, it is characterised in that comprise the following steps：By oil well or/and it can be adopted The sleeve pipe or/and oil pipe of the water injection well of oil production, the methyl being in a liquid state under 1-10 tons of normal temperature is added near wellbore zone oil reservoir Naphthalene, methyl naphthalene liquid, the mixture and 50-10000 of two or more any arbitrary proportion mixing of extraordinary organic liquid The mixture, is pushed into oil reservoir, the crude oil in oil reservoir deep is smoothly oozed by standard cubic meter special gas with special gas Flow into oil well or/and the water injection well of oil recovery production can be carried out, then by crude oil is from oil well or/and can carry out the note of oil recovery production Ground is risen in well；
The methyl naphthalene is by any one in 1- methyl naphthalenes, 2- methyl naphthalenes, mixed methylnaphthalene or two or more arbitrary proportions Mixture composition；
The methyl naphthalene liquid be by any one in following liquid either between them it is any two or more Meaning ratio mixture and without bad chemical reaction mixture composition：
1) methyl naphthalene, fusel oil mixing liquid；
2) methyl naphthalene, organic solvent mixing liquid；
3) methyl naphthalene emulsion, suspension；
4) less than the 50 DEG C methyl naphthalene liquid that are in a liquid state；
5) less than the 100 DEG C methyl naphthalenes that are in a liquid state and polycyclic aromatic hydrocarbon mixing liquid；
6) less than the 100 DEG C methyl naphthalenes that are in a liquid state and polycyclic aromatic hydrocarbon derivative mixing liquid；
7) less than the 100 DEG C methyl naphthalenes that are in a liquid state and biphenyl mixing liquid；
8) less than 50 DEG C methyl naphthalenes and crude oil mixed liquor body that are in a liquid state；
9) methyl naphthalene and liquid petroleum resin mixing liquid；
10) less than the 100 DEG C methyl naphthalenes that are in a liquid state and Petropols mixing liquid；
11) methyl naphthalene and organic liquid mixing liquid；The organic liquid is pyridine, quinoline, furans organic liquid；
The extraordinary organic liquid be by following liquid any one either between them it is any two or more Meaning ratio mixture and without bad chemical reaction mixture composition：
1) alcohol-based liquid；
2) diol, derivatives liquid；
3) ethers liquid；
4) ester liquid；
5) ketone liquid；
6) aromatic hydrocarbons class I liquid I；
7)；Heavy aromatics liquid；
8) aromatic hydrocarbons or arene derivatives content are more than 5% liquid petroleum product liquid；
9) olefin liquid；
10) solvent naphtha liquid；
11) Petropols liquid byproduct；
12) under normal temperature be liquid Petropols liquid；
13) fusel iol liquid；
14) less than the 100 DEG C hydro carbons autopolymer liquid that are in a liquid state；
15) less than the 50 DEG C methyl naphthalene melt liquids that are in a liquid state；
16) 50 DEG C of viscosity are less than 60mPa.S crude oil；
17) chlorine element, the organic liquid of element sulphur are free of in molecular formula；Have without chlorine element, element sulphur in the molecular formula Machine liquid is pyridine, quinoline, furans organic liquid；
18) less than the 100 DEG C Petropols liquid that are in a liquid state；
19) less than 100 DEG C be in a liquid state bio-oil, cracking bio-oil liquid.
2. exploitation method of thick oil type oil deposit according to claim 1, it is characterised in that：It is in a liquid state under 1-10 tons of normal temperature Methyl naphthalene, methyl naphthalene liquid, the ground of the mixture of two or more any arbitrary proportion mixing of extraordinary organic liquid Face temperature is higher than 25 DEG C, is added before hot fluid in oil reservoir.
3. exploitation method of thick oil type oil deposit according to claim 1, it is characterised in that：Described hot fluid surface temperature is higher than 80 DEG C, the flow for adding oil well or/and water filling casing or/and oil pipe should be greater than 5 ton hours.
4. exploitation method of thick oil type oil deposit according to claim 1, it is characterised in that：It is in liquid under 1-10 tons of described normal temperature The methyl naphthalene of state, methyl naphthalene liquid, the mixture of two or more any arbitrary proportion mixing of extraordinary organic liquid or/ With the expansion-resisting agent for being no more than 50% in hot fluid containing 1-10 tons of valid density.
5. exploitation method of thick oil type oil deposit according to claim 4, it is characterised in that：The expansion-resisting agent is amine salt type cation Surfactant, quaternary ammonium salt cationic surfactant, pyridine salt type cationic surfactant, sylvite, ammonium salt, water solubility Any one or two or more arbitrary proportions mixing in aluminium salt, water soluble zirconium salt, ammoniacal liquor, aluminium polychloride clear water solution and nothing The mixture of adverse chemical reaction.
6. exploitation method of thick oil type oil deposit according to claim 1, it is characterised in that：The special gas is natural gas, two The mixture of any one or two or more arbitrary proportions of carbonoxide, nitrogen, refinery gas, flue gas.
CN201710544538.2A 2010-04-12 2010-04-12 A kind of exploitation method of thick oil type oil deposit Pending CN107130950A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710544538.2A CN107130950A (en) 2010-04-12 2010-04-12 A kind of exploitation method of thick oil type oil deposit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201010144443A CN101839127A (en) 2010-04-12 2010-04-12 Exploitation method of thick oil type oil deposit
CN201710544538.2A CN107130950A (en) 2010-04-12 2010-04-12 A kind of exploitation method of thick oil type oil deposit

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CN201010144443A Division CN101839127A (en) 2010-04-12 2010-04-12 Exploitation method of thick oil type oil deposit

Publications (1)

Publication Number Publication Date
CN107130950A true CN107130950A (en) 2017-09-05

Family

ID=42742762

Family Applications (3)

Application Number Title Priority Date Filing Date
CN201010144443A Pending CN101839127A (en) 2010-04-12 2010-04-12 Exploitation method of thick oil type oil deposit
CN201710544538.2A Pending CN107130950A (en) 2010-04-12 2010-04-12 A kind of exploitation method of thick oil type oil deposit
CN201710544537.8A Pending CN107091075A (en) 2010-04-12 2010-04-12 A kind of exploitation method of thick oil type oil deposit

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CN201010144443A Pending CN101839127A (en) 2010-04-12 2010-04-12 Exploitation method of thick oil type oil deposit

Family Applications After (1)

Application Number Title Priority Date Filing Date
CN201710544537.8A Pending CN107091075A (en) 2010-04-12 2010-04-12 A kind of exploitation method of thick oil type oil deposit

Country Status (1)

Country Link
CN (3) CN101839127A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108798623A (en) * 2018-06-27 2018-11-13 中国石油化工股份有限公司 A kind of natural gas mixes dilute gaslift technological parameter preferred method
CN110500073A (en) * 2018-05-17 2019-11-26 陈光凌 A kind of device and method measuring urea foam assisted steam flooding heavy crude reservoir effect
CN113882840A (en) * 2021-11-12 2022-01-04 浙江工业大学 Method for heavy oil huff-puff cold recovery by using raw nano material

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102485771A (en) * 2010-12-03 2012-06-06 中国石油天然气股份有限公司 Fatty alcohol polyoxypropylene polyoxyethylene ether carboxylate, preparation thereof and application thereof
CN102410007B (en) * 2010-12-14 2014-11-19 中国海洋石油总公司 Pressure-maintaining thermal recovery process for thick oil field
CN102230372A (en) * 2011-06-24 2011-11-02 中国海洋石油总公司 Thermal recovery technology of multielement thermal fluid of thickened oil well
CN103114834B (en) * 2011-11-17 2015-11-25 中国石油化工股份有限公司 A kind of method reducing viscosity of thickened oil
CN102635342B (en) * 2012-04-10 2014-12-24 中国海洋石油总公司 Thermo-chemical oil extraction method of offshore thickened oil
CN102852489B (en) * 2012-09-04 2014-11-26 中国石油天然气股份有限公司 Method for treating cold oil extraction layer of thickened oil
CN102852505A (en) * 2012-09-24 2013-01-02 于文英 Oil production method for thin-medium thick layer super heavy oil hard-to-recover reserve
CN103225497B (en) * 2013-04-16 2015-07-08 中国石油天然气股份有限公司 Exploitation method of vaporizing formation water and displacing heavy oil by microwaves in situ
CN103450868A (en) * 2013-08-12 2013-12-18 新疆天普石油天然气工程技术有限公司 Heat-resistant salt-tolerant water-soluble amphiphilic polymer composite thick oil viscosity reducer
CN104632161A (en) * 2013-11-13 2015-05-20 中国石油化工股份有限公司 Multiple thermal fluid composite system oil displacing method
CN104650824A (en) * 2013-11-16 2015-05-27 中国石油化工股份有限公司 Oil-gas bed well drilling anti-water blocking composition
CN103923631A (en) * 2014-04-16 2014-07-16 吴应莉 Auxiliary for cold production of thickened oil
CN105089590A (en) * 2014-05-08 2015-11-25 中国石油化工股份有限公司 Method for improving yield of common heavy oil reservoir after water flooding
CN105567201A (en) * 2014-10-09 2016-05-11 中国石油天然气股份有限公司 Oil well oil-based wax removing agent
CN104403650B (en) * 2014-12-02 2018-01-02 中国石油天然气股份有限公司 A kind of viscous crude chemical huff-puff agents and preparation method and application
CN104481481B (en) * 2014-12-09 2017-02-22 中国石油天然气股份有限公司 Method for reducing viscosity of casing of heavy oil well by agent blending
CN105089592B (en) * 2015-07-17 2017-07-28 中国石油大学(华东) Chemical Self-heating system injection technology and injection device in thick oil reservoir
CN105134151B (en) * 2015-08-21 2017-06-30 山东恒业石油新技术应用有限公司 Hot nitrogen energization Viscosity Reduction And Stimulation
CN105201468B (en) * 2015-09-06 2017-12-05 中国石油天然气股份有限公司 A kind of method of UNICOM between auxiliary water horizontal well
CN105567210B (en) * 2016-03-10 2018-06-29 胡海军 A kind of preparation method of heat-resistance type emulsifying and viscosity-reducing agent for condensed oil
CN105888631B (en) * 2016-05-10 2018-06-26 中国海洋石油集团有限公司 A kind of determining method of fractured heavy oil reservoir hot water flooding physical analogy similarity numbers
CN106221840A (en) * 2016-09-18 2016-12-14 中国海洋石油总公司 Offshore oilfield utilizes high pressure to produce the device and method of Water Sproading low pressure associated gas
CN106593379B (en) * 2016-12-21 2019-06-11 中国石油天然气股份有限公司 A kind of horizontal well steam assisted gravity drainage starting method and device
CN108441199A (en) * 2018-03-23 2018-08-24 北京捷贝通石油技术股份有限公司 A kind of environment-friendly highly efficient heavy crude thinner
CN108676551A (en) * 2018-05-18 2018-10-19 淄博清泉生态科技有限公司 foam displacing agent
CN108915654A (en) * 2018-08-02 2018-11-30 西南石油大学 Thickened oil recovery method and system
CN109135704B (en) * 2018-09-26 2020-09-04 中国海洋石油集团有限公司 Thickened oil asphaltene dispersant for improving stability of thickened oil
CN111075414B (en) * 2018-10-22 2022-07-05 中国石油化工股份有限公司 Effective oil-utilizing process for shallow medium-high permeability super heavy oil reservoir
GB201901921D0 (en) * 2019-02-12 2019-04-03 Innospec Ltd Treatment of subterranean formations
GB201901928D0 (en) * 2019-02-12 2019-04-03 Innospec Ltd Treatment of subterranean formations
CN110118079B (en) * 2019-03-22 2021-10-22 中国石油化工股份有限公司 Fracturing exploitation method for high-wax-content oil layer
CN111205843B (en) * 2019-06-18 2021-06-25 中国石油大学(北京) Thick oil viscosity reducer, preparation method and use method thereof
CN110257042B (en) * 2019-07-06 2021-06-04 西南石油大学 Clean fracturing fluid for automatic reservoir gel breaking and preparation method thereof
CN110257043B (en) * 2019-07-06 2021-06-04 西南石油大学 Stimulus-response type clean fracturing fluid and preparation method thereof
CN110484230B (en) * 2019-08-22 2022-08-09 成都能生材科技开发有限责任公司 Thick oil cold water injection fat-soluble dissolution nano oil displacement agent and preparation method and application thereof
CN112708406B (en) * 2019-10-24 2023-01-24 中国石油化工股份有限公司 Biochemical composite blocking remover and preparation method and application thereof
CN112619370B (en) * 2020-12-01 2022-12-27 成都正升能源技术开发有限公司 Carbon dioxide flooding oilfield associated gas recovery device and use method
CN112175601A (en) * 2020-12-03 2021-01-05 山东新港化工有限公司 Low-tension thick oil viscosity reduction washing oil agent for cold production of common thick oil and preparation method and application thereof
CN114370259A (en) * 2022-01-27 2022-04-19 中国海洋石油集团有限公司 Offshore low-yield heavy oil cold production well thermal composite huff and puff synergy system and operation method
CN114961639B (en) * 2022-07-28 2022-10-14 新疆新易通石油科技有限公司 Steam flooding blocking and dredging combined development method for heavy oil reservoir

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1030118A (en) * 1987-05-28 1989-01-04 切夫尔昂研究公司 Improve the method that steam flooding improves crude yield with the branched alkyl aromatic sulphonate
CN1549885A (en) * 2001-08-31 2004-11-24 Method and equipment for raising oil recovery through filling gas
CN2806760Y (en) * 2005-04-14 2006-08-16 湖南天一赛马工程机械有限公司 Composite carrier injection plant unit for petroleum thermal production
US20080073079A1 (en) * 2006-09-26 2008-03-27 Hw Advanced Technologies, Inc. Stimulation and recovery of heavy hydrocarbon fluids
CN101235279A (en) * 2007-02-02 2008-08-06 富顺集团控股有限公司 Highly effective viscosity-reducing agent for thermodynamic oil extraction process
CN101255788A (en) * 2008-04-15 2008-09-03 中国石化集团胜利石油管理局石油开发中心 Thermochemistry auxiliary reinforced steam flooding method
CN101265801A (en) * 2008-05-06 2008-09-17 西南石油大学 Oil gas well gas injection oil extraction gas production technological process
CN101314710A (en) * 2008-07-18 2008-12-03 中国石油大学(华东) Oil displacement profile control agent, displacement of reservoir oil system and displacement of reservoir oil method
CN101328798A (en) * 2008-07-31 2008-12-24 中国石油天然气股份有限公司 Method for extracting thick oil

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4461350A (en) * 1981-12-16 1984-07-24 Mobil Oil Corporation Thermal solvent recovery method utilizing visbroken produced crude oil
US4565249A (en) * 1983-12-14 1986-01-21 Mobil Oil Corporation Heavy oil recovery process using cyclic carbon dioxide steam stimulation
CN1208808A (en) * 1998-09-01 1999-02-24 冯国营 Method and equipment for prodn. of thick oil by injecting detackifier
CN1253648C (en) * 2002-11-29 2006-04-26 中国石油化工股份有限公司河南油田分公司石油工程技术研究院 Thickened oil steam production synergist and its preparing method
CN1228412C (en) * 2003-11-28 2005-11-23 东营市芳华石化科技有限责任公司 Preparation method of CO2-N2 composite foam synergist for improving thick oil heat gathering effect
CN101210173B (en) * 2006-12-28 2013-04-24 李向东 Highly effective pour depressant for thermodynamic oil extraction process
CN101240701B (en) * 2007-02-07 2012-04-18 北京东方亚洲石油技术服务有限公司 Non-strong water-sensitive special oil reservoir heating power oil extraction method
CN101240702B (en) * 2007-02-09 2012-04-18 北京东方亚洲石油技术服务有限公司 Oil layer coagulating type oil reservoir mining method
CN101265800B (en) * 2007-03-13 2012-07-25 李向东 Oil layer wax-condensing type oil reservoir mining method
CN101417200B (en) * 2007-10-22 2012-06-27 辽河石油勘探局 Carbon dioxide, nitrogen gas recovering method in boiler flue gas
RU2373383C1 (en) * 2008-07-11 2009-11-20 Открытое акционерное общество "Татнефть" им. В.Д. Шашина Method for increased oil recovery in beds with carbonate rocks
CN101555784B (en) * 2009-06-01 2013-04-17 李向东 Clean natural gas exploiting method

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1030118A (en) * 1987-05-28 1989-01-04 切夫尔昂研究公司 Improve the method that steam flooding improves crude yield with the branched alkyl aromatic sulphonate
CN1549885A (en) * 2001-08-31 2004-11-24 Method and equipment for raising oil recovery through filling gas
CN2806760Y (en) * 2005-04-14 2006-08-16 湖南天一赛马工程机械有限公司 Composite carrier injection plant unit for petroleum thermal production
US20080073079A1 (en) * 2006-09-26 2008-03-27 Hw Advanced Technologies, Inc. Stimulation and recovery of heavy hydrocarbon fluids
CN101235279A (en) * 2007-02-02 2008-08-06 富顺集团控股有限公司 Highly effective viscosity-reducing agent for thermodynamic oil extraction process
CN101255788A (en) * 2008-04-15 2008-09-03 中国石化集团胜利石油管理局石油开发中心 Thermochemistry auxiliary reinforced steam flooding method
CN101265801A (en) * 2008-05-06 2008-09-17 西南石油大学 Oil gas well gas injection oil extraction gas production technological process
CN101314710A (en) * 2008-07-18 2008-12-03 中国石油大学(华东) Oil displacement profile control agent, displacement of reservoir oil system and displacement of reservoir oil method
CN101328798A (en) * 2008-07-31 2008-12-24 中国石油天然气股份有限公司 Method for extracting thick oil

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110500073A (en) * 2018-05-17 2019-11-26 陈光凌 A kind of device and method measuring urea foam assisted steam flooding heavy crude reservoir effect
CN108798623A (en) * 2018-06-27 2018-11-13 中国石油化工股份有限公司 A kind of natural gas mixes dilute gaslift technological parameter preferred method
CN113882840A (en) * 2021-11-12 2022-01-04 浙江工业大学 Method for heavy oil huff-puff cold recovery by using raw nano material

Also Published As

Publication number Publication date
CN101839127A (en) 2010-09-22
CN107091075A (en) 2017-08-25

Similar Documents

Publication Publication Date Title
CN107130950A (en) A kind of exploitation method of thick oil type oil deposit
CN101839123B (en) Exploitation method for wax precipitation oil reservoir
Kumar et al. A comprehensive review on chemically enhanced water alternating gas/CO2 (CEWAG) injection for enhanced oil recovery
Alagorni et al. An overview of oil production stages: enhanced oil recovery techniques and nitrogen injection
Xu et al. A review of development methods and EOR technologies for carbonate reservoirs
Taber et al. EOR screening criteria revisited—Part 1: Introduction to screening criteria and enhanced recovery field projects
Awan et al. A survey of North Sea enhanced-oil-recovery projects initiated during the years 1975 to 2005
Omari et al. A comprehensive review of recent advances on surfactant architectures and their applications for unconventional reservoirs
CN103937475B (en) Carbon dioxide acidification blocking remover and process of not reversely discharging raffinate after acidification
CN102746838A (en) Blocking remover of gas well shaft
CN105940080A (en) Stimulation method and system for enhancing oil production
Wang et al. Review on oil displacement technologies of enhanced oil recovery: state-of-the-art and outlook
Nianyin et al. Recent advances in waterless fracturing technology for the petroleum industry: An overview
Yuan et al. Overview of formation damage during improved and enhanced oil recovery
CN108930529B (en) Oil-heat-electricity co-production method based on waste oil and gas wells
Manrique et al. Enhanced oil recovery field experiences in carbonate reservoirs in the United States
Wei et al. CO2 huff-n-puff after surfactant-assisted imbibition to enhance oil recovery for tight oil reservoirs
CN101255332A (en) Solid-free high temperature resistant petroleum oil well completion working liquid
CN109294544A (en) Non-oxidized polymer chemistry de-plugging gel breaker and preparation method thereof
Wan Report on developing a US-China joint project on CO2-based fracturing techniques
CN103045211A (en) Method for preparing repeated fracturing blocking agent based on selective gel breaker
EP2904066B1 (en) A method for recovering oil
US20240067860A1 (en) Compositions and methods for carbon dioxide solidification
RU2527432C1 (en) Method of oil deposit development by water and gas injection
Osterloh et al. Evaluation of tall oil fatty acid salt as a steam/foam surfactant

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20191009

Address after: 124010 no.42-2-502, Shencai community, Gaosheng street, Xinglongtai District, Panjin City, Liaoning Province

Applicant after: Li Xiang Dong

Address before: 124010 room 232, office building, Panjin Economic Development Zone, Liaoning

Applicant before: Beijing Dongfang Asian Petroleum Technology Service Co., Ltd.

WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20170905