CN106957640A - It is a kind of to increase the neutral composite drug that oil reservoir formation permeability carries out crude oil volume increase - Google Patents
It is a kind of to increase the neutral composite drug that oil reservoir formation permeability carries out crude oil volume increase Download PDFInfo
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- CN106957640A CN106957640A CN201710358176.8A CN201710358176A CN106957640A CN 106957640 A CN106957640 A CN 106957640A CN 201710358176 A CN201710358176 A CN 201710358176A CN 106957640 A CN106957640 A CN 106957640A
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- increase
- composite drug
- carries out
- crude oil
- volume increase
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Classifications
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- 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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/528—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
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- 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
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- 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
- C09K8/582—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of bacteria
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- 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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/06—Methods or apparatus for cleaning boreholes or wells using chemical means for preventing, limiting or eliminating the deposition of paraffins or like substances
-
- 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/32—Anticorrosion additives
Abstract
Increase the neutral composite drug that oil reservoir formation permeability carries out crude oil volume increase the present invention relates to a kind of.The invention belongs to offshore oilfield production technique field.It is a kind of to increase the neutral composite drug that oil reservoir formation permeability carries out crude oil volume increase, it is characterized in：The neutral composite drug that increase oil reservoir formation permeability carries out crude oil volume increase is made up of polyethylene glycol glycosides aliphatic ether, biology enzyme and lignin carboxylate, and composite drug each component mass percent is polyethylene glycol glycosides aliphatic ether 80% 90%, biology enzyme 5% 10%, lignin carboxylate 5% 10%.The present invention is using the neutral composite drug of volume increase " crude oil ", the characteristics of alkali non-with non-acid, completely neutral de-plugging agent, can completely avoid the injury of stratum that soda acid causes and gathering system, make the advantages of security and convenience of operation are greatly enhanced.
Description
Technical field
The invention belongs to offshore oilfield production technique field, more particularly to a kind of increase oil reservoir formation permeability carries out former
The neutral composite drug of oil volume increase.
Background technology
At present, offshore oilfield, because reservoir formation has inhomogeneity, often there is permeability pole during crude oil extraction
Low stratum, in addition in the injecting process for carrying out tertiary oil recovery, the near wellbore zone of pit shaft and producing horizon is caused due to incrustation
The permeability reduction of oil reservoir.In order to improve the formation physical property of production layer position, improve and often injected in the earth formation in permeability, oil field
Acid solution, the corrosion by acidic liquid to oil layer blocking thing and rock constituents, so as to reach oil layer unblocking and improve oil reservoir infiltration
Property purpose, improve oil well productivity (or water absorbing capacity of water injection well).
Chemical agent species used in the acidification that general oil field is used for：Acidic liquid is by acid and additive group
Into the conventional acid solution of acidification of oil field has hydrochloric acid, mud acid (hydrochloric acid+hydrofluoric acid), nitric acid, phosphoric acid etc..It is different for stratum
The difference of plugging reason and lithology selects different acid formulas, such as carbonate strata, is acidified using hydrochloric acid, for sandstone
Stratum, typically using soil acid acidizing.Additive used typically has corrosion inhibiter, stabilizer, surfactant, diverting agent in acidifying
Deng
But, the shortcoming of conventional acidulation operation is：1. due in construction pipeline, equipment rust bring the pipe that stratum is caused into
The blocking of post and formation void, the process control procedure of acidifying needs the accuracy of scheme, and control is bad to be produced to shaft column
The consequence of raw corrosion.2. acid and oil-gas Layer rock and fluid are incompatible the infringement caused to oil-gas Layer.
The content of the invention
The present invention provides a kind of increase oil reservoir formation permeability progress to solve technical problem present in known technology
The neutral composite drug of crude oil volume increase.
It is an object of the invention to provide it is a kind of with outstanding Reservoir Protection feature it is obvious, simple to operate, do not influence collection defeated
System, characteristic of environmental protection are obvious, can be the features such as the plugging removal and stimulation of near wellbore zone increase oil reservoir formation permeability carries out crude oil increasing
The neutral composite drug of production.
The features such as producing water fouling type water quality and working space, construction environment for offshore oilfield, never damages oil pipe
On the premise of tubing string and reservoir formation, the actual research and development technology scheme of science is set up.For increase oil reservoir formation permeability with
The neutral composite drug of crude oil volume increase is reached, main chemical compositions are polyethylene glycol glycosides aliphatic ether, biology enzyme and high-performance
Activating agent-lignin carboxylate, pH value is 7, belongs to neutral.Oil reservoir formation permeability can be increased to reach that crude oil increases production
Effect is not injured simultaneously to oil-gas Layer.
For Oil Field situation, mode of just being squeezed using injecting interval plug oil pipe is constructed.Concrete scheme is：Pass through
The water injection well of platform, is injected in the adding medicine mode of slug formula, mainly takes chelating mechanism：Releived as having an intravenous drip
Remove a small amount of inorganic scale to block, form the stable complex aqueous solution, do not change pH value, not only non-corrosiveness, also with anti-
After rotten effect, and chemicals treatment oil reservoir, it is not necessary to counter to be arranged, extra large pipe flow gathering system can be directly entered.Technology
It is advanced fairly obvious.
For pit shaft and near wellbore zone due to caused by fouling type water quality fouling concerns achieve preferably volume increase effect
Really, compare with acidifying very slowly can effectively ensure that de-plugging agent even into adjacent to oil well area depths because medicament reacts with dirt
New injury is not caused to stratum.Be not in that the skeleton injury formation collapse easily caused to stratum after conventional acidulation easily goes out
The problem of sand.Conventional acidulation is also overcomed easily to form that acidifying is uneven, form acid sludge, needing that anti-row, operating radius be small, the term of validity
It is short, the problems such as operational danger is big.
The principles of increase yield of the neutral composite drug is：Chelating mechanism mainly is taken, the removal releived as having an intravenous drip is few
The inorganic scale of amount is blocked, and forms the stable complex aqueous solution；Biology enzyme can block the deposition of organic deposition, and grease is decomposed to form
Oil or fat particles, carrying, which is portalled, to be shouted, while changing the wetting situation of rock, improves oleic permeability, eliminates water lock phenomenon.
The neutral composite drug that present invention increase oil reservoir formation permeability carries out crude oil volume increase is adopted the technical scheme that：
It is a kind of to increase the neutral composite drug that oil reservoir formation permeability carries out crude oil volume increase, it is characterized in：Increase oil reservoir rock
Layer permeability carries out the neutral composite drug of crude oil volume increase by polyethylene glycol glycosides aliphatic ether, biology enzyme and lignin carboxylate
Composition, composite drug each component mass percent be polyethylene glycol glycosides aliphatic ether 80%-90%, biology enzyme 5%-10%,
Lignin carboxylate 5%-10%.
The neutral composite drug that present invention increase oil reservoir formation permeability carries out crude oil volume increase can also use following technology
Scheme：
Described increase oil reservoir formation permeability carries out the neutral composite drug of crude oil volume increase, is characterized in：Polyethylene glycol
The structural formula of glucoside aliphatic ether is
Wherein, m=16 to 25, n=12 to 20.
Described increase oil reservoir formation permeability carries out the neutral composite drug of crude oil volume increase, is characterized in：Biology enzyme is
Fixed glucose isomerase.
Described increase oil reservoir formation permeability carries out the neutral composite drug of crude oil volume increase, is characterized in：Lignin carboxylic
Hydrochlorate is lignin carboxylic acid sodium.
The present invention has the advantages and positive effects of：
Increase oil reservoir formation permeability and carry out the neutral composite drug of crude oil volume increase as a result of the brand-new skill of the present invention
Art scheme, compared with prior art, the present invention are directed to Oil Field situation, and mode is just being squeezed using injecting interval plug oil pipe and is being carried out
Construction.Concrete scheme is：By the water injection well of platform, injected in the adding medicine mode of slug formula, mainly take chelating machine
Reason：The a small amount of inorganic scale that removes releived as having an intravenous drip is blocked, and is formed the stable complex aqueous solution, is not changed pH value,
Not only non-corrosiveness, also with antiseptic effect, and after chemicals treatment oil reservoir, it is not necessary to counter to be arranged, can be directly entered sea
Pipe flow gathering system.Technology it is advanced fairly obvious, the security and convenience of operation is greatly enhanced.
Embodiment
For the content of the invention, feature and effect of the present invention can be further appreciated that, following examples are hereby enumerated, and describe in detail
It is as follows：
Embodiment 1
It is a kind of to increase the neutral composite drug that oil reservoir formation permeability carries out crude oil volume increase, by polyethylene glycol glycosides fat
Ether, biology enzyme and lignin carboxylate composition, composite drug each component mass percent is polyethylene glycol glycosides aliphatic ether
80%th, biology enzyme 10%, lignin carboxylate 10%.
The structural formula of polyethylene glycol glycosides aliphatic ether is
Wherein, m=16 to 25, n=12 to 20
Biology enzyme is fixed glucose isomerase, and lignin carboxylate is lignin carboxylic acid sodium.
The neutral composite drug of crude oil volume increase uses mechanical mixture polyethylene glycol glycosides aliphatic ether, biology enzyme, lignin
Carboxylate and be made.
Embodiment 2
A kind of preparation for increasing the neutral composite drug that oil reservoir formation permeability carries out crude oil volume increase is applied with scene：
Increase the neutral composite drug that oil reservoir formation permeability carries out crude oil volume increase, by polyethylene glycol glycosides aliphatic ether,
Biology enzyme and lignin carboxylate composition, composite drug component proportion (by weight)：Polyethylene glycol glycosides aliphatic ether 88%,
Biology enzyme 4%, lignin carboxylate 8%.
The structural formula of polyethylene glycol glycosides aliphatic ether is
Wherein, m=16 to 25, n=12 to 20
Biology enzyme is fixed glucose isomerase, and lignin carboxylate is lignin carboxylic acid sodium.
Preparation method：Uniformly it is made by formula ratio mechanical mixture.The preparation process of polyethylene glycol glycosides aliphatic ether：In dress
In the there-necked flask for having magnetic agitation, thermometer and division box, polyethylene glycol is added, acidic catalyst is then added, heated up
To 120 DEG C, glucose is added, and is decompressed to 2.5~0.8KPa, the water of extraction generation reacts 1~2 hour, examines anti-
Terminal is answered, it is 7~8 that pH value is neutralized to saturation sodium hydroxide solution, when product polyethylene glycol glycosides.Then equipped with machine
Polyethylene glycol glycosides, catalyst and emulsifying agent are added in tool stirring, thermometer, the four-hole boiling flask of division box, 100 are warming up to
DEG C, aliphatic acid, higher aliphatic are added, quick stirring makes the uniform emulsion of System forming, is to slowly warm up to 180~190 DEG C,
The water of nitrogen pressurize and extraction generation is passed through, reacts 8~10 hours, obtains product polyethylene glycol glycosides aliphatic ether.
Subjects：In the high water cut oil field of Bohai Sea offshore platform water flood recovery mode.
Testing program：Prized by injection device, using low power plunger pump, set implantation concentration as 500mg/L；Injection
Cycle is 3 months.
It the results are shown in Table 1.
Plugging removal effect contrast before and after the injection of the different time sections of table 1 (water injection well is constant with fluence)
The characteristics of the present embodiment uses " the neutral composite drug of crude oil volume increase ", alkali non-with non-acid, completely neutral solution
Blocking agent, can completely avoid the injury of stratum that soda acid causes and gathering system, obtain the security and convenience of operation
The good effect such as greatly improve.
Claims (4)
1. a kind of increase the neutral composite drug that oil reservoir formation permeability carries out crude oil volume increase, it is characterized in that：Increase oil reservoir rock stratum
Permeability carries out the neutral composite drug of crude oil volume increase by polyethylene glycol glycosides aliphatic ether, biology enzyme and lignin carboxylate group
Into composite drug each component mass percent is polyethylene glycol glycosides aliphatic ether 80%-90%, biology enzyme 5%-10%, wood
Quality carboxylate 5%-10%.
2. increase oil reservoir formation permeability according to claim 1 carries out the neutral composite drug of crude oil volume increase, its feature
It is：The structural formula of polyethylene glycol glycosides aliphatic ether is
Wherein, m=16 to 25, n=12 to 20.
3. increase oil reservoir formation permeability according to claim 1 carries out the neutral composite drug of crude oil volume increase, its feature
It is：Biology enzyme is fixed glucose isomerase.
4. increase oil reservoir formation permeability according to claim 1 carries out the neutral composite drug of crude oil volume increase, its feature
It is：Lignin carboxylate is lignin carboxylic acid sodium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710358176.8A CN106957640A (en) | 2017-05-19 | 2017-05-19 | It is a kind of to increase the neutral composite drug that oil reservoir formation permeability carries out crude oil volume increase |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710358176.8A CN106957640A (en) | 2017-05-19 | 2017-05-19 | It is a kind of to increase the neutral composite drug that oil reservoir formation permeability carries out crude oil volume increase |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109971444A (en) * | 2019-04-10 | 2019-07-05 | 苏州泽方新能源技术有限公司 | Biological enzymolysis blocking agent suitable for oil gas field |
| CN112358863A (en) * | 2021-01-12 | 2021-02-12 | 山东圣哲石油装备有限公司 | Chemical yield increasing liquid for low-permeability oil layer and yield increasing method |
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| CN1754940A (en) * | 2004-09-30 | 2006-04-05 | 天津市慧珍科技有限公司 | Accessory ingredient for viscous crude oil exploitation, its preparation and application |
| CN102373037A (en) * | 2010-08-10 | 2012-03-14 | 中国石油化工集团公司 | Novel biological blockage removing solution for well completion, and production method thereof |
| CN102504784A (en) * | 2011-11-10 | 2012-06-20 | 西安瑞捷生物科技有限公司 | Descaling blocking remover for oil-water wells |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109971444A (en) * | 2019-04-10 | 2019-07-05 | 苏州泽方新能源技术有限公司 | Biological enzymolysis blocking agent suitable for oil gas field |
| CN112358863A (en) * | 2021-01-12 | 2021-02-12 | 山东圣哲石油装备有限公司 | Chemical yield increasing liquid for low-permeability oil layer and yield increasing method |
| CN112358863B (en) * | 2021-01-12 | 2023-07-21 | 山东圣哲石油装备有限公司 | Chemical yield increasing liquid and method for low-permeability oil layer |
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Application publication date: 20170718 |
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