CN101265800B

CN101265800B - Oil layer wax-condensing type oil reservoir mining method

Info

Publication number: CN101265800B
Application number: CN2007100864846A
Authority: CN
Inventors: 李向东
Original assignee: Individual
Current assignee: Panjin Hesheng Dadi Petroleum Technology Co ltd
Priority date: 2007-03-13
Filing date: 2007-03-13
Publication date: 2012-07-25
Anticipated expiration: 2027-03-13
Also published as: CN101265800A

Abstract

The invention discloses an oil layer wax precipitation type oil resource exploitation method which is progressed cyclically by the following steps: 1. 0.1-500 tons of pour point and viscosity depressant are injected into oil layers through an oil well; 2. 1-10000 tons of thermal fluids mixed with 30-400 DEG C of pour point and viscosity depressant are injected into the oil layers through an oil well; in the thermal fluids mixed with pour point and viscosity depressant, the weight proportion of the thermal fluids and the pour point and viscosity depressant is 100:0.001-10; 3. the oil well is closed, reacting for 2-240 hours when the well is closed; 4. a mixture of oil and water is sprayed through the oil well; 5. the oil is produced normally by a pumping unit. The exploitation method can effectively exploit the oil layer wax precipitation type oil resource, which greatly reduces the production cost, prolongs the production cycle of the oil well, improves the oil well production and increases the final recovery rate of the oil resource. Moreover, the exploitation method has the advantages of easy operation, safety and reliability and significant economic benefits.

Description

A kind of oil layer wax-condensing type oil reservoir mining method

Technical field

The present invention relates to a kind of crude oil production method, especially a kind of oil layer wax-condensing type oil reservoir mining method.

Background technology

At present, in the crude oil production exploitation, exploit oil layer wax-condensing type oil reservoir inevitably.The principal character of this type oil layer wax-condensing type oil reservoir is that its oil reservoir (oil reservoir) temperature is higher than the former oil freezing point of this oil reservoir, is lower than this crude oil dewaxing temperature, or close with this crude oil wax precipitation temperature; Though therefore this quasi-oil can flow in oil reservoir (oil reservoir), be prone to produce, separate out the wax crystalline substance, thereby stop up near very easily causing oil reservoir or oil well at oil reservoir; Perhaps cause himself viscosity increase, influence the oil well ordinary production, if do not take effective process; Such oil layer wax-condensing type oil reservoir exploitation difficulty is very big; Cost of winning is high, causes whole oil reservoir to exploit when serious, causes mass energy waste and economic loss.Processes such as the dynamic liquid method of process of existing such oil reservoir of exploitation, steaming process, microbial method, organic solvent method, shaft bottom electromagnetic method, oil reservoir electrothermal way, ripple method, artificial earthquake method, Splitting Method, catalystic pyrolysis, heating power cracking process, surfactant method, water flood all have different defects.

The power fluid method is that the high pressure-temperature crude oil that is used in the ground generation injects oil well as power fluid, utilizes the energy of power fluid and hydraulics such as the jet pump in the oil well, hydraulic piston pump to come out oil extraction.Because this method can not effectively solve the wax problem of analysing of oil layer wax-condensing type oil reservoir deep crude oil, therefore be used for the oil layer wax-condensing type oil reservoir exploitation and be difficult to practicability, and also with high costs, the therefore domestic application example that does not also have success at present.

Steaming process is that high temperature and high pressure steam is injected oil reservoir, utilizes the heat oil layer wax-condensing type oil reservoir of steam self, utilizes heating power with the brilliant fusing of the wax of separating out, and condensation point of crude oil, viscosity is reduced the back exploit out with crude oil.This method directly is used for oil layer wax-condensing type oil reservoir and has following defective: the one, receive the serious restriction of reservoir geology condition, reservoir pressure etc., the steam in jection difficulty; The 2nd, can produce dysgenic wax precipitation oil reservoir to oil reservoir for those high temperature is that the serious wax precipitation oil reservoir of temperature-sensitive is difficult to use in a large number high temperature and high pressure steam; The 3rd, wax precipitation oil reservoir must maintain always and be higher than the crude oil wax precipitation temperature far away even above on the temperature of crude oil dewaxing temperature, need consume a large amount of steam for this reason in whole oil recovery process, causes cost for oil production high; The 4th, its complex process, vapor (steam) temperature, mass dryness fraction and reservoir temperature field control difficulty are prone to take place to coagulate oil recovery accidents such as pipe, wax card; The 5th, also rest on experimental stage in this France at present, be difficult to practicability, be difficult to large-scale application.

Microbial method is that microorganism is injected oil layer wax-condensing type oil reservoir, utilizes action of microorganisms to come out oil extraction.Because this method directly is used for the serious restriction that oil layer wax-condensing type oil reservoir receives reservoir geology condition, reservoir pressure etc.; The microbial survival rate is low; With high costs, therefore be used for the oil layer wax-condensing type oil reservoir exploitation and be difficult to practicability, the domestic application example that does not also have success at present.

Organic solvent method is to be that main emulsion injects oil reservoir with organic solvent or with the organic solvent, all is solvability dissolving part paraffin, asphalitine, colloids of utilizing organic solvent, and then reduces former oil freezing point and viscosity, and oil extraction is come out.This method directly is used for oil layer wax-condensing type oil reservoir and has following defective: the one, and organic solvent dissolution wax crystalline substance is limited in one's ability, and is limited in one's ability to wax precipitation oil reservoir pour point depression of crude oil viscosity reduction, is difficult to effectively solve the wax problem of analysing of oil layer wax-condensing type oil reservoir deep crude oil; The 2nd, its pour-viscosity reduction ability has very strong ageing; Promptly along with the continuity of time; Organic solvent in wax precipitation oil reservoir crude oil weakens gradually the pour-viscosity reduction ability of this crude oil or disappears, and the freezing point of this crude oil, viscosity can raise until reinstatement gradually, causes analysing the wax phenomenon and occurs once more or recover; Therefore be difficult to be provided the sufficient production time, do not reach the requirement of production practicability to oil recovery process; The 3rd, its safety is low; The 4th, its consumption is big, causes cost for oil production high, is used for the oil layer wax-condensing type oil reservoir exploitation and is difficult to practicability.

Shaft bottom electromagnetic method, oil reservoir electrothermal way are that electric energy is converted into heat energy, utilize heat energy heating oil reservoir, and oil extraction is come out.Because this method need consume a large amount of electric energy, need the complex matched technology, implement, management difficulty is big; With high costs, input-output ratio is low, therefore generally uses as the de-plugging measure; Be difficult to directly it is used for the oil layer wax-condensing type oil reservoir exploitation on a large scale the domestic application example that does not also have success at present.

The ripple method is that electric energy is converted into acoustic energy or microwave, utilizes its characteristic to handle oil reservoir, and oil extraction is come out.Because this method need consume a large amount of electric energy, need the complex matched technology, implement, management difficulty is big; The domestic field trial of also successfully not carrying out at present; And with high costs because of it, input-output ratio is low, the domestic very difficult at present oil layer wax-condensing type oil reservoir exploitation of directly using it for.

The artificial earthquake method is that other energy are converted into seismic wave input oil reservoir, and oil extraction is come out.Because this method can not effectively solve the wax problem of analysing of oil layer wax-condensing type oil reservoir crude oil, domesticly also successfully do not carry out field trial at present, and with high costs because of it, input-output ratio is low, domesticly is difficult to directly use it for the oil layer wax-condensing type oil reservoir exploitation at present.

Splitting Method is a kind of conventional oil recovery technique, is through transforming oil reservoir oil extraction to be come out.Because this method can not effectively solve the wax problem of analysing of oil layer wax-condensing type oil reservoir crude oil, can only use as supporting technology, domestic at present also of no use its carries out the precedent of oil layer wax-condensing type oil reservoir exploitation separately.

Catalystic pyrolysis, heating power cracking process are to utilize catalyzer, heat energy that the big molecule of crude oil is become little molecule, and oil extraction is come out.Because this method supporting technology is complicated, it is big to implement difficulty, and cracking process is difficult to effective control; Need to consume the substantial oil in the oil reservoir; Produce polycondensation, coking phenomenon, domestic also of no use its at present successfully carries out the test of oil layer wax-condensing type oil reservoir exploitation site of deployment, and with high costs because of it; Input-output ratio is low, the domestic very difficult at present oil layer wax-condensing type oil reservoir exploitation of directly using it for.

Surfactant method is that surfactant is injected oil reservoir, and oil extraction is come out.Because this method is influenced by surfactant properties, can not effectively solve the wax problem of analysing of oil layer wax-condensing type oil reservoir crude oil, be difficult to directly use it for the oil layer wax-condensing type oil reservoir exploitation, the domestic oil layer wax-condensing type oil reservoir Mining Test of also successfully not using it at present.

Water flood is a kind of conventional oil recovery technique, is to utilize water that crude oil is replaced out.Because this method can not effectively solve the wax problem of analysing of oil layer wax-condensing type oil reservoir crude oil, inject difficulty, the domestic very difficult at present oil layer wax-condensing type oil reservoir exploitation of directly using it for.

In a word, the resultant effect of said method when the exploitation oil layer wax-condensing type oil reservoir is not ideal.

Summary of the invention

The technical problem that the present invention will solve provides a kind of oil layer wax-condensing type oil reservoir mining method, and this exploitation method can effectively be exploited oil layer wax-condensing type oil reservoir, significantly reduces cost of winning; Prolong the oil well production cycle; Increase oil well output, improve the oil reservoir ultimate recovery, implement easily; Safe and reliable, remarkable in economical benefits.

For solving the problems of the technologies described above, a kind of oil layer wax-condensing type oil reservoir mining method of the present invention is to circulate as follows to carry out:

1, in oil reservoir, injects 0.1～500 ton of pour-viscosity reduction agent through oil well;

2, inject 30～400 ℃ 1～10000 ton of the hot fluid that is mixed with the pour-viscosity reduction agent to oil reservoir through oil well; In the said hot fluid that is mixed with the pour-viscosity reduction agent, the ratio of weight and number of its hot fluid and said pour-viscosity reduction agent is 100:0.001～10;

3, close oil well, vexed well reaction 2～240 hours;

4, through oil well open flow oil water mixture;

5, normally recover the oil with oil pumper;

Said pour-viscosity reduction agent is any or any two kinds or the above mixture of nanometer displacement agent, pour-point depressant, extraordinary organic solvent; Said hot fluid is hot water or water vapour.

Further improve, a kind of oil layer wax-condensing type oil reservoir mining method of the present invention is to circulate as follows to carry out:

3, close oil well, vexed well reaction 2～240 hours;

4, through oil well open flow oil water mixture;

5, normally recover the oil with oil pumper;

6, when the load of oil pumper reaches relevant oil recovery rules regulation numerical value or in 24 hours, increases by 10～30% suddenly, the stopping production closing well; At first in oil reservoir, inject 0.1～500 ton of pour-viscosity reduction agent then through oil well casing; Then in oil reservoir, inject 30～300 ℃ 1～10000 ton of the hot fluid that is mixed with the pour-viscosity reduction agent through oil well casing; Carry out easy oil reservoir after-treatment; Vexed then well reaction 2～120 hours, the open flow oil water mixture normally recovers the oil with oil pumper then.

Said pour-viscosity reduction agent is any or any two kinds or the above mixture of pour-point depressant, nanometer displacement agent, extraordinary organic solvent; Said hot fluid is hot water or water vapour.

2, in oil reservoir, inject carbon dioxide or nitrogen 1000-100000 standard cubic meters of purity more than 92% through oil well;

3, inject 30～400 ℃ 1～10000 ton of the hot fluid that is mixed with the pour-viscosity reduction agent to oil reservoir through oil well; In the said hot fluid that is mixed with the pour-viscosity reduction agent, the ratio of weight and number of its hot fluid and said pour-viscosity reduction agent is 100:0.001～10;

4, close oil well, vexed well reaction 2～240 hours;

5, through oil well open flow oil water mixture;

6, normally recover the oil with oil pumper;

Further improve again, a kind of oil layer wax-condensing type oil reservoir mining method of the present invention is to circulate as follows to carry out:

1, in oil reservoir, injects 0.1～500 ton of pour-viscosity reduction agent through oil well

4, close oil well, vexed well reaction 2～240 hours;

5, through oil well open flow oil water mixture;

6, normally recover the oil with oil pumper;

7, when the load of oil pumper reaches relevant oil recovery rules regulation numerical value or in 24 hours, increases by 10～30% suddenly, the stopping production closing well; At first in oil reservoir, inject 0.1～500 ton of pour-viscosity reduction agent then through oil well casing; Then in oil reservoir, inject carbon dioxide or nitrogen 10-10000 standard cubic meters of purity more than 92% through oil well casing; Then in oil reservoir, inject 30～300 ℃ 1～10000 ton of the hot fluid that is mixed with the pour-viscosity reduction agent again, carry out easy oil reservoir after-treatment, vexed then well reaction 2～120 hours through oil well casing; The open flow oil water mixture normally recovers the oil with oil pumper then.

Said pour-point depressant is made up of following weight percentages:

1) mixture 20～40% a kind of or that two or more arbitrary proportion is mixed between them of the condensed ring aromatic hydrocarbon derivative of biphenyl, condensed ring aromatic hydrocarbon or not chloride element, element sulphur;

2) arene content surpasses 5% liquid petroleum product, Petropols or the normal temperature that normal temperature is liquid state down is the mixture 40～78.3% a kind of or that two or more arbitrary proportion is mixed between them in the hydro carbons nature aggregation of graininess down;

3) mixture 0.1～2% a kind of or that two or more arbitrary proportion is mixed between them of water soluble anionic surfactant, water soluble nonionic surfactant, oil-soluble anion surfactant or oil-soluble non-ionic surface active agent;

4) fusel oil 0.1～2%;

5) close flash point is greater than the mixture 0.5～6% a kind of or that two or more arbitrary proportion is mixed between them of 20 ℃ alcohol ether;

6) on main chain and/or side chain, have respectively and the nonpolar part of paraffin molecule eutectic and the oil of the polarity part of wax Jingjing type distortion is dissolved or the mixture 1～10% a kind of or that two or more arbitrary proportion is mixed between them of water-soluble polymer.

Said nanometer displacement agent is made up of following weight percentages:

1) mixture 4～34% a kind of or that two or more arbitrary proportion is mixed between them of the condensed ring aromatic hydrocarbon derivative of biphenyl, condensed ring aromatic hydrocarbon or not chloride element, element sulphur;

2) arene content surpasses 5% liquid petroleum product, Petropols or the normal temperature that normal temperature is liquid state down is the mixture 34～94.3% a kind of or that two or more arbitrary proportion is mixed between them in the hydro carbons nature aggregation of graininess down;

3) mixture 0.1～10% a kind of or that two or more arbitrary proportion is mixed between them of water soluble anionic surfactant, water soluble nonionic surfactant, oil-soluble anion surfactant or oil-soluble non-ionic surface active agent;

4) fusel oil 0.5～5%;

6) on main chain and/or side chain, have respectively and the nonpolar part of paraffin molecule eutectic and the oil of the polarity part of wax Jingjing type distortion is dissolved or the mixture 0.5～9% a kind of or that two or more arbitrary proportion is mixed between them of water-soluble polymer;

7) mixture 0.1～2% a kind of or that two or more arbitrary proportion is mixed between them of peroxide.

The mixture that said extraordinary organic solvent is meant a kind of of following commodity or two or more arbitrary proportion is mixed between them:

1) close flash point >=20 ℃ and aromatic hydrocarbons or arene derivatives content are greater than 5% liquid petroleum product, and the content of its chlorine element and element sulphur is less than one thousandth;

2) normal temperature of close flash point >=20 ℃ is liquid alkene, cycloolefin, fragrant alkene;

3) residue at the bottom of the still that forms of the mixing heavy benzene of close flash point >=20 ℃ or Petropols production technology, the content of its chlorine element and element sulphur is less than one thousandth;

4) the liquid ketone of close flash point >=20 ℃;

5) liquid ether of close flash point >=20 ℃;

6) liquid alcohol of close flash point >=20 ℃;

7) the liquid alcohol ether of close flash point >=20 ℃;

8) fusel oil of close flash point >=20 ℃.

In described pour-point depressant, nanometer displacement agent and extraordinary organic solvent:

Said condensed ring aromatic hydrocarbon is: naphthalene, anthracene, phenanthrene, acenaphthene, aphthacene, pyrene or benzo acenaphthene; The condensed ring aromatic hydrocarbon derivative of said not chloride element, element sulphur is: methyl naphthalene, dimethylnaphthalene, naphthols, naphthalenediol, methylphenanthrene or phenanthrol.

Described aromatic hydrocarbons or arene derivatives content above 5% liquid petroleum product are: oils, emulsification oils or varsol; Said normal temperature for liquid Petropols is down: normal temperature is down that liquid hydrocarbon petroleum resin or normal temperature is liquid modification hydrocarbon petroleum resin down; Described arene content surpasses 5% liquid petroleum product, normal temperature and is liquid Petropols or normal temperature down in the hydro carbons nature aggregation for graininess down, and the content of its chlorine element and element sulphur is less than one thousandth; Above-mentioned raw materials can directly be bought from market.

Said oils is: diesel oil, solvent naphtha, heavy aromatics fuel oil or plastics, rubber cracking oil; The close flash point of said plastics, rubber cracking oil is greater than 20 ℃; Above-mentioned raw materials can directly be bought from market.

Said emulsification oils is: diesel oil emulsification, emulsification heavy aromatics fuel oil or oil-in-water type paraffin remover; Above-mentioned raw materials can directly be bought from market.

Said varsol is: mixed olefins, hybrid ring alkene, mix fragrant alkene, mix residue at the bottom of the still that heavy benzene or Petropols production technology form; Above-mentioned raw materials can directly be bought from market.

Said water soluble anionic surfactant is: sodium alkyl sulfonate, alkyltrimethyl ammonium chloride, polyethenoxy alkylphenols carboxylic acid sodium salt, polyoxyethylated alkyl alcohol carboxylic acid sodium salt, polyethenoxy alkylphenols sulfonate sodium, polyoxyethylated alkyl alcohol sulfonate sodium, polyoxyethylated alkyl alcohol sulfuric ester sodium salt, polyethenoxy alkylphenols sulfuric ester sodium salt, structural formula are C _nF _2n+1The carboxylic acid sodium type fluorine surfactant of COONa, wherein n representes that 4～10 integer, structural formula are C ₈F ₁₇CONH (CH ₂) ₅The carboxylic acid sodium type fluorine surfactant of COONa, structural formula are R _fOC ₆H ₄The carboxylic acid sodium type fluorine surfactant of COONa, structural formula are C _nF _2n+1SO ₃Na sodium sulfonate type fluorine surfactant, wherein n representes 5 or 7 or 9, structural formula is C ₃F ₇(CH ₂) _nSO ₃The sodium sulfonate type fluorine surfactant of Na, wherein n representes 5 or 7 or 9, structural formula is C _nF _2n+1C ₆H ₄SO ₃The sodium sulfonate type fluorine surfactant of H, wherein n representes 5 or 7 or 9, structural formula is C ₇F ₁₅CH ₂OSO ₃The sulfuric acid type fluorine surfactant of Na, structural formula are (CF ₃) ₂CF ₂(CH ₂) ₆OSO ₃The sulfuric acid type fluorine surfactant of Na or structural formula are C ₈F ₁₇SO ₂NH (CH ₂) ₃NH (CH ₂) ₃NHCH ₂CH ₂OSO ₃The sulfuric acid type fluorine surfactant of Na;

Said water soluble nonionic surfactant: polyoxyethylated alkyl alcohol, polyethenoxy alkylphenols, polyoxyethylene octyl phenol ether, polyoxyethylene polyoxypropylene propylene glycol or sorbitan monocarboxylate APEO;

Said oil-soluble anion surfactant is: petroleum sodium sulfonate, oil carboxylic acid sodium, mahogany acid potassium or mahogany acid ammonium;

Said oil-soluble non-ionic surface active agent is: F (CF ₂) _m(CH ₂) _nH, m=10 or 12 wherein, 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, C ₁₀F ₁₉O (CH ₂CH ₂O) ₂₃C ₁₀₀F ₁₉Or C ₃FO

Wherein n representes 1 or 2, A _rThe expression aryl.

Said have oil with the nonpolar part of paraffin molecule eutectic and the polarity part that makes the distortion of wax Jingjing type to dissolve on main chain and/or side chain respectively or water-soluble polymer is: alkylphenol formaldehyde resin, polyacrylate, polycarboxylic acids vinyl acetate; Ethene and vinyl carboxylate copolymer, ethene and carboxylic acid propylene ester copolymer, ethene and acrylate copolymer; Ethene and 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 maleic acid ester 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, vinyl carboxylates and propene sulfonic acid salt copolymer, ethene, acrylic acid ester and propene sulfonic acid salt copolymer or acrylic acid ester, vinylpyridine and butanediol double methacrylate copolymer.

Described peroxide is organic peroxide or inorganic peroxide, and said organic peroxide is performic acid, cumyl peroxide, dibenzoyl peroxide, methyl ethyl ketone peroxide, peroxidized t-butyl perbenzoate, cyclohexanone peroxide, tertbutanol peroxide or cumyl hydroperoxide; Said inorganic peroxide is hydrogen peroxide, sodium peroxide, carbamide peroxide, sodium peroxydisulfate or SODIUM PERCARBONATE.

The normal temperature of said close flash point >=20 ℃ is liquid alkene and is: 14-alkene or 12-alkene; The normal temperature of said close flash point >=20 ℃ is liquid cycloolefin and is: cyclopentadiene or dicyclopentadiene; The normal temperature of said close flash point >=20 ℃ is liquid fragrant alkene and is: styrene, methyl styrene or p-methylstyrene.

The liquid ketone of said close flash point >=20 ℃ is: cyclopentanone, hexanone, heptanone or octanone.

The liquid ether of said close flash point >=20 ℃ is: di-n-butyl ether, isoamyl ether or methyl phenyl ethers anisole.

The liquid alcohol of said close flash point >=20 ℃ is: isopropyl alcohol, butanols or ethylene glycol.

Said close flash point is butyl glycol ether, diethylene glycol ether or diethylene glycol butyl ether greater than 20 ℃ liquid alcohol ether.

The present invention has following beneficial effect:

1, owing to adopted pour-viscosity reduction agent and hot fluid combination and cooperation pour-viscosity reduction, pour-viscosity reduction, to remove the paraffin blockage effect remarkable, and it is ageing that the pour-viscosity reduction that weakened produces, and permission hot fluid temperature or total heat energy significantly reduce, and can significantly reduce cost of winning.

2, owing to adopted pour-viscosity reduction agent and hot fluid combination and cooperation pour-viscosity reduction; Pour-viscosity reduction, to remove the paraffin blockage effect remarkable, and pour-viscosity reduction produces ageingly obtains maximum reduction, makes to carry out easy oil reservoir after-treatment through the method for the motionless down-hole string of oil well casing and become and maybe and realize practicability; Not only further reduced cost of winning; And further prolonged the oil well production cycle, increased oil well output, remarkable in economical benefits.

The specific embodiment

Embodiment 1

A kind of oil layer wax-condensing type oil reservoir mining method is to circulate as follows to carry out:

1, in oil reservoir, injects 0.1 ton of pour-point depressant through oil well

2, inject 400 ℃ 1 ton of the hot water that is mixed with pour-point depressant to oil reservoir through oil well; In the said hot water that is mixed with pour-point depressant, the ratio of weight and number of its hot water and pour-point depressant is 10:1;

3, close oil well, vexed well reaction 2 hours;

4, through oil well open flow oil water mixture;

5, normally recover the oil with oil pumper;

Said pour-point depressant is made up of following weight percentages:

1) biphenyl 20%;

2) diesel oil 78.3%;

3) sodium alkyl sulfonate 0.1%;

4) fusel oil 0.1%;

5) butyl glycol ether 0.5%;

6) alkylphenol formaldehyde resin 1%;

Chlorine element in the said diesel oil, the content of element sulphur are less than one thousandth; Said pour-point depressant is to be mixed by the above-mentioned raw materials normal temperature and pressure.

Embodiment 2

1, in oil reservoir, injects 500 tons of pour-point depressants through oil well

2, inject 30 ℃ 10000 tons of hot water that is mixed with the pour-viscosity reduction agent to oil reservoir through oil well; In the said hot water that is mixed with pour-point depressant, the ratio of weight and number of its hot water and said pour-point depressant is 100:0.001;

3, close oil well, vexed well reaction 240 hours;

4, through oil well open flow oil water mixture;

5, normally recover the oil with oil pumper;

Said pour-point depressant is made up of following weight percentages:

1) naphthalene 20%;

Anthracene 20%

2) normal temperature is the natural aggregation 40% of the hydro carbons of graininess down;

3) alkyltrimethyl ammonium chloride 2%;

4) fusel oil 2%;

5) diethylene glycol ether 6%;

6) polyacrylate 10%;

Chlorine element in the natural aggregation of the following hydro carbons for graininess of said normal temperature, the content of element sulphur are less than one thousandth; Said pour-point depressant is to be mixed by the above-mentioned raw materials normal temperature and pressure.

Embodiment 3

1, in oil reservoir, injects 10 tons of pour-point depressants through oil well

2, inject 50 ℃ 500 tons of hot water that is mixed with pour-point depressant to oil reservoir through oil well; In the said hot water that is mixed with pour-point depressant, the ratio of weight and number of its hot water and said pour-point depressant is 100:1;

3, close oil well, vexed well reaction 15 hours;

4, through oil well open flow oil water mixture;

5, normally recover the oil with oil pumper;

Said pour-point depressant is made up of following weight percentages:

1) methyl naphthalene 32%;

2) diesel oil emulsification 60%;

3) the polyethenoxy alkylphenols carboxylic acid sodium salt 1.2%;

4) fusel oil 1.2%;

5) the diethylene glycol butyl ether 2%;

6) the polycarboxylic acids vinyl acetate 3.6%;

Chlorine element in the said diesel oil emulsification, the content of element sulphur are less than one thousandth; Said pour-point depressant is to be mixed by the above-mentioned raw materials normal temperature and pressure.

Embodiment 4

1, in oil reservoir, injects 35 tons of pour-point depressants through oil well

2, inject 70 ℃ 1000 tons of hot water that is mixed with pour-point depressant to oil reservoir through oil well; In the said hot water that is mixed with pour-point depressant, the ratio of weight and number of its hot water and said pour-point depressant is 50:1;

3, close oil well, vexed well reaction 28 hours;

4, through oil well open flow oil water mixture;

5, normally recover the oil with oil pumper;

Said pour-point depressant, it is made up of following weight percentages:

1) biphenyl 10%,

Anthracene 10%,

Dimethylnaphthalene 10%;

2) normal temperature is liquid modification hydrocarbon petroleum resin 65% down;

3) the polyoxyethylated alkyl alcohol carboxylic acid sodium salt 1%;

4) fusel oil 1%;

5) diethylene glycol ether 1%;

6) ethene and vinyl carboxylate copolymer 2%;

The content of the following chlorine element for liquid modification hydrocarbon petroleum resin of said normal temperature, element sulphur is less than one thousandth; Said pour-point depressant is to be mixed by the above-mentioned raw materials normal temperature and pressure.

Embodiment 5

1, in oil reservoir, injects 60 tons of pour-point depressants through oil well

2, inject 90 ℃ 1500 tons of hot water that is mixed with pour-point depressant to oil reservoir through oil well;

3, close oil well, vexed well reaction 41 hours;

4, through oil well open flow oil water mixture;

5, normally recover the oil with oil pumper;

6, when the load of oil pumper reaches relevant oil recovery rules regulation numerical value or in 24 hours, increases by 10% suddenly, the stopping production closing well; At first in oil reservoir, inject 0.1 ton of pour-point depressant then through oil well casing; Then in oil reservoir, inject 30 ℃ 1 ton of the hot water that is mixed with pour-point depressant through oil well casing; Carry out easy oil reservoir after-treatment,, normally recover the oil with oil pumper then with sleeve pipe open flow oil water mixture;

In the said hot water that is mixed with pour-point depressant, the ratio of weight and number of its hot water and said pour-point depressant is 40:1.

Said pour-point depressant, it is made up of following weight percentages:

1) phenanthrene 10%,

Naphthols 22%;

2) mixed olefins 30%,

Hybrid ring alkene 30%;

3) the polyethenoxy alkylphenols sulfonate sodium 1.2%;

4) fusel oil 1.2%;

5) butyl glycol ether 2%;

6) ethene and carboxylic acid propylene ester copolymer 3.6%;

Chlorine element in said mixed olefins and the hybrid ring alkene, the content of element sulphur are respectively less than one thousandth; Said pour-point depressant is to be mixed by the above-mentioned raw materials normal temperature and pressure.

Embodiment 6

1, in oil reservoir, injects 85 tons of nanometer displacement agents through oil well

2, inject 110 ℃ 2000 tons of hot water that is mixed with nanometer displacement agent to oil reservoir through oil well;

3, close oil well, vexed well reaction 59 hours;

4, through oil well open flow oil water mixture;

5, normally recover the oil with oil pumper;

6, when the load of oil pumper reaches relevant oil recovery rules regulation numerical value or in 24 hours, increases by 15% suddenly, the stopping production closing well; At first in oil reservoir, inject 150 tons of nanometer displacement agents then through oil well casing; Then in oil reservoir, inject 65 ℃ 3000 tons of hot water that is mixed with nanometer displacement agent through oil well casing; Carry out easy oil reservoir after-treatment; Vexed then well reaction 30 hours with sleeve pipe open flow oil water mixture, is normally recovered the oil with oil pumper then;

In the said hot water that is mixed with nanometer displacement agent, the ratio of weight and number of its hot water and said nanometer displacement agent is 100:3.

Said nanometer displacement agent, it is made up of following weight percentages:

1) acenaphthene 3%,

Naphthalenediol 3%;

2) normal temperature is liquid hydrocarbon petroleum resin 84.3% down;

3) the polyoxyethylated alkyl alcohol sulfonate sodium 1.4%;

4) fusel oil 1.4%;

5) diethylene glycol ether 3%;

6) ethene and acrylate copolymer 3.2%;

7) cyclohexanone peroxide 0.7%;

Said normal temperature down for the content of the chlorine element in the liquid hydrocarbon petroleum resin, element sulphur less than one thousandth; Said nano oil displacement agent is to be mixed by the above-mentioned raw materials normal temperature and pressure.

Embodiment 7

1, in oil reservoir, injects 120 tons of nanometer displacement agents through oil well

2, inject 130 ℃ 2500 tons of water vapours that is mixed with nanometer displacement agent to oil reservoir through oil well;

3, close oil well, vexed well reaction 67 hours;

4, through oil well open flow oil water mixture;

5, normally recover the oil with oil pumper;

6, when the load of oil pumper reaches relevant oil recovery rules regulation numerical value or in 24 hours, increases by 25% suddenly, the stopping production closing well; At first in oil reservoir, inject 300 tons of nanometer displacement agents then through oil well casing; Then in oil reservoir, inject 90 ℃ 4000 tons of water vapours that is mixed with nanometer displacement agent through oil well casing; Carry out easy oil reservoir after-treatment; Vexed then well reaction 50 hours with sleeve pipe open flow oil water mixture, is normally recovered the oil with oil pumper then;

In the said water vapour that is mixed with nanometer displacement agent, the ratio of weight and number of its water vapour and said nanometer displacement agent is 100:3.5.

1) biphenyl 3%,

Aphthacene 3%,

Methylphenanthrene 3%;

2) solvent naphtha 20%,

Heavy aromatics fuel oil 58.1;

3) polyoxyethylated alkyl alcohol sulfuric ester sodium salt 1.6%;

4) fusel oil 1.6%;

5) butyl glycol ether 4%;

6) alkylphenol formaldehyde resin 1%,

Polycarboxylic acids vinyl acetate 1%,

Ethene and vinyl carboxylate copolymer 1%,

Ethene and acrylate copolymer 1%,

Ethene and methacrylate copolymer 0.8%;

7) tertbutanol peroxide 0.9%;

Chlorine element in said solvent naphtha, the heavy aromatics fuel oil, element sulphur at the content of Petropols less than one thousandth; Said nano oil displacement agent is to be mixed by the above-mentioned raw materials normal temperature and pressure.

Embodiment 8

1, in oil reservoir, injects 145 tons of nanometer displacement agents through oil well

2, inject 150 ℃ 3000 tons of water vapours that is mixed with nanometer displacement agent to oil reservoir through oil well;

3, close oil well, vexed well reaction 80 hours;

4, through oil well open flow oil water mixture;

5, normally recover the oil with oil pumper;

6, when the load of oil pumper reaches relevant oil recovery rules regulation numerical value or in 24 hours, increases by 30% suddenly, the stopping production closing well; At first in oil reservoir, inject 200 tons of nanometer displacement agents then through oil well casing; Then in oil reservoir, inject 120 ℃ 4500 tons of water vapours that is mixed with nanometer displacement agent through oil well casing; Carry out easy oil reservoir after-treatment; Vexed then well reaction 70 hours with sleeve pipe open flow oil water mixture, is normally recovered the oil with oil pumper then;

In the said water vapour that is mixed with nanometer displacement agent, the ratio of weight and number of its water vapour and said nanometer displacement agent is 25:1.

1) pyrene 15%;

2) normal temperature is the natural aggregation 59.9% of the hydro carbons of graininess down;

3) polyethenoxy alkylphenols sulfuric ester sodium salt 8%;

4) fusel oil 4%;

5) butyl glycol ether 5%;

6) ethene and maleic acid ester copolymer 7%;

7) cumyl hydroperoxide 1.1%;

Chlorine element in the natural aggregation of the following hydro carbons for graininess of described normal temperature, the content of element sulphur are less than one thousandth; Said nano oil displacement agent is to be mixed by the above-mentioned raw materials normal temperature and pressure.

Embodiment 9

1, in oil reservoir, injects 200 tons of nanometer displacement agents through oil well

2, in oil reservoir, inject carbon dioxide 1000 standard cubic meters of purity more than 92% through oil well;

3, inject 170 ℃ 3500 tons of water vapours that is mixed with nanometer displacement agent to oil reservoir through oil well; In the said water vapour that is mixed with nanometer displacement agent, the ratio of weight and number of its water vapour and said nanometer displacement agent is 100:4.5;

4, close oil well, vexed well reaction 100 hours;

5, through oil well open flow oil water mixture;

6, normally recover the oil with oil pumper;

1) biphenyl 3%,

Benzo acenaphthene 3%,

Methyl naphthalene 3%,

Naphthols 3%,

Phenanthrol 3%;

2) diesel oil emulsification 30%;

Plastics, rubber cracking oil 43.7%;

3) sodium alkyl sulfonate 0.5%,

Polyoxyethylated alkyl alcohol 0.5%;

Petroleum sodium sulfonate 0.5%,

Polyoxyethylene octadecylamine-7 0.5%;

4) fusel oil 1.5%;

5) diethylene glycol ether 4.5%;

6) styrene and maleic acid ester copolymer 2%;

7) hydrogen peroxide 1.3%;

Chlorine element in said diesel oil emulsification and plastics, the rubber cracking oil, the content of element sulphur is less than one thousandth, and the close flash point of said plastics, rubber cracking oil is greater than 20 ℃; Said nano oil displacement agent is to be mixed by the above-mentioned raw materials normal temperature and pressure.

Embodiment 10

1, in oil reservoir, injects 250 tons of nanometer displacement agents through oil well

2, in oil reservoir, inject nitrogen 10000 standard cubic meters of purity more than 92% through oil well;

3, inject 200 ℃ 4000 tons of hot water that is mixed with nanometer displacement agent to oil reservoir through oil well; In the said hot water that is mixed with nanometer displacement agent, the ratio of weight and number of its hot water and said nanometer displacement agent is 20:1;

4, close oil well, vexed well reaction 120 hours;

5, through oil well open flow oil water mixture;

6, normally recover the oil with oil pumper;

1) biphenyl 5%,

Naphthalene 5%,

Phenanthrene 5%,

Pyrene 5%,

Methyl naphthalene 5%,

Naphthols 5%;

2) normal temperature is liquid modification hydrocarbon petroleum resin 58.5% down;

3) the polyethenoxy alkylphenols carboxylic acid sodium salt 0.5%,

Polyethenoxy alkylphenols 0.5%,

Oil carboxylic acid sodium 0.5%,

Lauroyl ethylene glycol amine 0.5%;

4) fusel oil 0.5%;

5) butyl glycol ether 1.5%;

6) the polycarboxylic acids vinyl acetate 1%,

Ethene and carboxylic acid propylene ester copolymer 1%,

Ethene and methacrylate copolymer 1%,

Styrene and maleate copolymer 1 %,

α-alkene and maleic acid ester copolymer 2%;

7) sodium peroxide 1.5%;

Described normal temperature down for the content of the chlorine element in the liquid modification hydrocarbon petroleum resin, element sulphur less than one thousandth; Said nano oil displacement agent is to be mixed by the above-mentioned raw materials normal temperature and pressure.

Embodiment 11

1, in oil reservoir, injects 275 tons of nanometer displacement agents through oil well

2, in oil reservoir, inject carbon dioxide 20000 standard cubic meters of purity more than 92% through oil well;

3, inject 240 ℃ 4500 tons of water vapours that is mixed with nanometer displacement agent to oil reservoir through oil well; In the said water vapour that is mixed with nanometer displacement agent, the ratio of weight and number of its water vapour and said nanometer displacement agent is 100:5.5;

4, close oil well, vexed well reaction 145 hours;

5, through oil well open flow oil water mixture;

6, normally recover the oil with oil pumper;

1) phenanthrol 28%;

2) the oil-in-water type paraffin remover 62%;

3) polyethenoxy alkylphenols sulfuric ester sodium salt 0.5%,

Polyoxyethylene octyl phenol ether 0.5%,

Mahogany acid potassium 0.5%,

Fish oil acyl ethylene glycol amine 0.5%;

4) fusel oil 0.1%;

5) diethylene glycol ether 1.9%;

6) polyacrylate 1%,

Vinyl acetate and acrylate copolymer 2%,

Acrylic acid ester, vinylpyridine and butanediol double methacrylate copolymer 2%;

7) SODIUM PERCARBONATE 1%;

Chlorine element in the said oil-in-water type paraffin remover, the content of element sulphur are less than one thousandth; Said nano oil displacement agent is to be mixed by the above-mentioned raw materials normal temperature and pressure.

Embodiment 12

1, in oil reservoir, injects 300 tons of nanometer displacement agents through oil well

2, in oil reservoir, inject nitrogen 30000 standard cubic meters of purity more than 92% through oil well;

3, inject 280 ℃ 5000 tons of hot water that is mixed with nanometer displacement agent to oil reservoir through oil well; In the said hot water that is mixed with nanometer displacement agent, the ratio of weight and number of its hot water and said nanometer displacement agent is 50:3;

4, close oil well, vexed well reaction 150 hours;

5, through oil well open flow oil water mixture;

6, normally recover the oil with oil pumper;

1) aphthacene 5%,

Benzo acenaphthene 5%;

Methyl naphthalene 6%,

Naphthols 6%;

2) normal temperature is liquid hydrocarbon petroleum resin 19% down;

Normal temperature is liquid modification hydrocarbon petroleum resin 20% down;

Normal temperature is the natural aggregation 20% of the hydro carbons of graininess down;

3) polyoxyethylated alkyl alcohol sulfuric ester sodium salt 0.5%,

Polyoxyethylene polyoxypropylene propylene glycol 0.5%;

Petroleum sodium sulfonate 0.1%,

Mahogany acid potassium 0.2%,

Mahogany acid ammonium 0.2%,

Polyoxyethylene alkylamide 0.5%.

4) fusel oil 1%;

5) butyl glycol ether 5%;

6) the polycarboxylic acids vinyl acetate 2%,

Vinyl acetate and maleic acid ester copolymer 2%,

Ethene, vinyl alcohol and vinyl carboxylate copolymer 2%,

Ethene, vinyl carboxylates and propene sulfonic acid salt copolymer 2%,

Ethene, acrylic acid ester and propene sulfonic acid salt copolymer 2%;

7) carbamide peroxide 1%;

Described normal temperature down for liquid hydrocarbon petroleum resin, normal temperature down for liquid modification hydrocarbon petroleum resin and normal temperature down for the content of the chlorine element in the hydro carbons nature aggregation of graininess, element sulphur less than one thousandth; Said nano oil displacement agent is to be mixed by the above-mentioned raw materials normal temperature and pressure.

Embodiment 13

1, in oil reservoir, injects 325 tons of nanometer displacement agents through oil well

2, in oil reservoir, inject nitrogen 60000 standard cubic meters of purity more than 92% through oil well;

3, inject 300 ℃ 6000 tons of water vapours that is mixed with nanometer displacement agent to oil reservoir through oil well; In the said water vapour that is mixed with nanometer displacement agent, the ratio of weight and number of its water vapour and said nanometer displacement agent is 100:6.5;

4, close oil well, vexed well reaction 160 hours;

5, through oil well open flow oil water mixture;

6, normally recover the oil with oil pumper;

1) biphenyl 2%,

Anthracene 3%,

Acenaphthene 3%,

Benzo acenaphthene 2%,

Methyl naphthalene 2%,

Naphthols 3%,

Menaphthyl phenanthrene 2%,

Phenanthrol 3%;

2) heavy aromatics fuel oil 10%,

Diesel oil emulsification 20%,

Mix fragrant alkene 10%,

Mix heavy benzene 10%,

Residue 15.5% at the bottom of the still that the Petropols production technology forms;

3) the polyoxyethylated alkyl alcohol carboxylic acid sodium salt 0.5%;

Sorbitan monocarboxylate APEO 0.5%;

Petroleum sulfonate 0.5%;

Lauroyl ethylene glycol amine 0.5%;

4) fusel oil 0.5%;

5) diethylene glycol ether 1%;

6) ethene, acrylic acid and acrylate copolymer 3%,

Ethene, vinyl methyl ether and maleic acid ester copolymer 5%,

Ethene, vinyl acetate and maleic acid ester copolymer 2%;

7) sodium peroxydisulfate 1%;

Chlorine element at the bottom of the still that said heavy aromatics fuel oil, diesel oil emulsification, mixing fragrance alkene, mixing heavy benzene and Petropols production technology form in the residue, element sulphur content are respectively less than one thousandth; Said nano oil displacement agent is to be mixed by the above-mentioned raw materials normal temperature and pressure.

Embodiment 14

4, close oil well, vexed well reaction 160 hours;

5, through oil well open flow oil water mixture;

6, normally recover the oil with oil pumper;

1) biphenyl 3%,

Anthracene 3%,

Acenaphthene 3%,

Benzo acenaphthene 3%,

Methyl naphthalene 3%,

Naphthols 3%,

Menaphthyl phenanthrene 4%,

Phenanthrol 4%;

2) heavy aromatics fuel oil 10%,

Diesel oil emulsification 10%,

Mix fragrant alkene 10%,

Mix heavy benzene 10%,

Residue 10% at the bottom of the still that the Petropols production technology forms;

3)

Structural formula is C ₄F ₉COO ^-The carboxylic acid sodium type fluorine surfactant 0.5% of Na,

Structural formula is C ₅F ₁₁COO ^-The carboxylic acid sodium type fluorine surfactant 0.5% of Na,

Structural formula is C ₆F ₁₃COO ^-The carboxylic acid sodium type fluorine surfactant 0.5% of Na,

Structural formula is C ₇F ₁₅COO ^-The carboxylic acid sodium type fluorine surfactant 0.5% of Na,

Structural formula is C ₈F ₁₇COO ^-The carboxylic acid sodium type fluorine surfactant 0.5% of Na,

Structural formula is C ₉F ₁₉COO ^-The carboxylic acid sodium type fluorine surfactant 0.5% of Na,

Structural formula is C ₁0F ₂₁COO ^-The carboxylic acid sodium type fluorine surfactant 0.5% of Na,

Structural formula is C ₈F ₁₇CONH (CH ₂) ₅The carboxylic acid sodium type fluorine surfactant 0.5% of COONa,

Structural formula is R _fOC ₆H ₄The carboxylic acid sodium type fluorine surfactant 0.5% of COONa,

Structural formula is C ₅F ₁₁SO ₃The sodium sulfonate type fluorine surfactant 0.5% of Na,

Structural formula is C ₇F ₁₅SO ₃The sodium sulfonate type fluorine surfactant 0.5% of Na,

Structural formula is C ₉F ₁₉SO ₃The sodium sulfonate type fluorine surfactant 0.5% of Na,

Structural formula is C ₃F ₇(CH ₂) ₅SO ₃The sodium sulfonate type fluorine surfactant 0.5% of Na,

Structural formula is C ₃F ₇(CH ₂) ₇SO ₃The sodium sulfonate type fluorine surfactant 0.5% of Na,

Structural formula is C ₃F ₇(CH ₂) ₉SO ₃The sodium sulfonate type fluorine surfactant 0.5% of Na,

Structural formula is C ₅F ₁₁C ₆H ₄SO ₃The sodium sulfonate type fluorine surfactant 0.5% of H;

Structural formula is C ₇F ₁₅C ₆H ₄SO ₃The sodium sulfonate type fluorine surfactant 1% of H;

Structural formula is C ₉F ₁₉C ₆H ₄SO ₃The sodium sulfonate type fluorine surfactant 1% of H;

4) fusel oil 1%;

5) the diethylene glycol butyl ether 1%;

6) ethene, acrylic acid and acrylate copolymer 3%,

Ethene, vinyl methyl ether and maleic acid ester copolymer 5%,

Ethene, vinyl acetate and maleic acid ester copolymer 2%;

7) performic acid 1%,

Cumyl peroxide 1%;

Chlorine element at the bottom of the still that said heavy aromatics fuel oil, diesel oil emulsification, mixing fragrance alkene, mixing heavy benzene and Petropols production technology form in the residue, element sulphur content are respectively less than one thousandth; Said nanometer displacement agent is to be mixed by the above-mentioned raw materials normal temperature and pressure.

Embodiment 15

4, close oil well, vexed well reaction 160 hours;

5, through oil well open flow oil water mixture;

6, normally recover the oil with oil pumper;

1) pyrene 5%;

2) normal temperature is the natural aggregation 68% of the hydro carbons of graininess down;

3)C ₁₀F ₁₉O(CH ₂CH ₂O) ₂₃C ₁₀₀F ₁₉ 1％，

F(CF ₂) ₁₀(CH ₂) ₈H 1％，

F(CF ₂) ₁₂(CH ₂) ₁₂H 1％，

F(CF ₂) ₁₀(CH ₂) ₁₄H 1％，

F(CF ₂) ₁₂(CH ₂) ₁₈H 1％，

F(CF ₂) ₁₂(CH ₂) ₂₄H 1％，

(A _rRepresent aryl) 1%,

4) fusel oil 2%;

5) butyl glycol ether 6%;

6) ethene and maleate copolymer 1 0%;

7) carbamide peroxide 0.5%,

Dibenzoyl peroxide 0.5%;

Chlorine element in the natural aggregation of the following hydro carbons for graininess of described normal temperature, the content of element sulphur are less than one thousandth; Said nanometer displacement agent is to be mixed by the above-mentioned raw materials normal temperature and pressure.

Embodiment 16

4, close oil well, vexed well reaction 160 hours;

5, through oil well open flow oil water mixture;

6, normally recover the oil with oil pumper;

1) biphenyl 3%,

Benzo acenaphthene 3%,

Methyl naphthalene 3%,

Naphthols 3%,

Phenanthrol 3%;

2) diesel oil emulsification 30%;

Plastics, rubber cracking oil 43.7%;

3) sodium alkyl sulfonate 0.5%,

Polyoxyethylated alkyl alcohol 0.5%,

(CF ₃) ₂CF ₂(CH ₂) ₆OSO ₃Na 0.5％，

C ₈F ₁₇SO ₂NH(CH ₂) ₃NH(CH ₂) ₃NHCH ₂CH ₂OSO ₃Na 0.5％；

4) fusel oil 1.5%;

5) diethylene glycol ether 4.5%;

6) acrylic acid ester, vinylpyridine and butanediol double methacrylate copolymer 2%;

7) hydrogen peroxidase 10 .7%,

Methyl ethyl ketone peroxide 0.6%;

Embodiment 17

1, in oil reservoir, injects 350 tons of extraordinary organic solvents through oil well

2, in oil reservoir, inject nitrogen 70000 standard cubic meters of purity more than 92% through oil well;

3, inject 325 ℃ 7000 tons of hot water that is mixed with extraordinary organic solvent to oil reservoir through oil well;

4, close oil well, vexed well reaction 180 hours;

5, through oil well open flow oil water mixture;

6, normally recover the oil with oil pumper;

7, when the load of oil pumper reaches relevant oil recovery rules regulation numerical value or in 24 hours, increases by 10% suddenly, the stopping production closing well; At first in oil reservoir, inject 0.1 ton of extraordinary organic solvent then through oil well casing; Then in oil reservoir, inject nitrogen 10 standard cubic meters of purity more than 92% through oil well casing; Then in oil reservoir, inject 30 ℃ the hot water that is mixed with extraordinary organic solvent again, carry out easy oil reservoir after-treatment, vexed then well reaction 2 hours through oil well casing; The open flow oil water mixture normally recovers the oil with oil pumper then;

In the said hot water that is mixed with extraordinary organic solvent, the ratio of weight and number of its hot water and said extraordinary organic solvent is 100:7.

Said extraordinary organic solvent, it is made up of one or more any proportionings of following raw material:

1) diesel oil, solvent naphtha, heavy aromatics fuel oil or plastics, rubber cracking oil, diesel oil emulsification, emulsification heavy aromatics fuel oil or oil-in-water type paraffin remover;

Close flash point >=20 of said diesel oil, solvent naphtha, heavy aromatics fuel oil or plastics, rubber cracking oil, diesel oil emulsification, emulsification heavy aromatics fuel oil or oil-in-water type paraffin remover ℃ and aromatic hydrocarbons or arene derivatives content is greater than 5%, and wherein the content of chlorine element and element sulphur less than one thousandth;

2) 14-alkene of close flash point >=20 ℃,

12-alkene of close flash point >=20 ℃;

3) the mixing heavy benzene of close flash point >=20 ℃, the content of its chlorine element and element sulphur is less than one thousandth;

4) cyclopentanone of close flash point >=20 ℃;

5) di-n-butyl ether of close flash point >=20 ℃;

6) isopropyl alcohol of close flash point >=20 ℃;

7) butyl glycol ether of close flash point >=20 ℃;

8) fusel oil of close flash point >=20 ℃;

Embodiment 18

1, in oil reservoir, injects 375 tons of extraordinary organic solvents through oil well

2, in oil reservoir, inject carbon dioxide 80000 standard cubic meters of purity more than 92% through oil well;

3, inject 350 ℃ 8000 tons of water vapours that is mixed with extraordinary organic solvent to oil reservoir through oil well;

4, close oil well, vexed well reaction 200 hours;

5, through oil well open flow oil water mixture;

6, normally recover the oil with oil pumper;

7, when the load of oil pumper reaches relevant oil recovery rules regulation numerical value or in 24 hours, increases by 17% suddenly, the stopping production closing well; At first in oil reservoir, inject 500 tons of extraordinary organic solvents then through oil well casing; Then in oil reservoir, inject carbon dioxide 1000 standard cubic meters of purity more than 92% through oil well casing; Then in oil reservoir, injects 300 ℃ 10000 tons of water vapours that is mixed with extraordinary organic solvent again through oil well casing, carry out easy oil reservoir after-treatment, vexed then well reacted 120 hours; The open flow oil water mixture normally recovers the oil with oil pumper then;

In the said water vapour that is mixed with extraordinary organic solvent, the ratio of weight and number of its water vapour and said extraordinary organic solvent is 25:2.

1) cyclopentadiene of close flash point >=20 ℃,

The dicyclopentadiene of close flash point >=20 ℃;

2) residue at the bottom of the still that forms of Petropols production technology, its close flash point >=20 ℃ and wherein the content of chlorine element and element sulphur less than one thousandth;

3) hexanone of close flash point >=20 ℃;

4) isoamyl ether of close flash point >=20 ℃;

6) butanols of close flash point >=20 ℃;

7) diethylene glycol ether of close flash point >=20 ℃;

8) fusel oil of close flash point >=20 ℃.

Embodiment 19

1, in oil reservoir, injects 400 tons of extraordinary organic solvents through oil well

2, in oil reservoir, inject nitrogen 90000 standard cubic meters of purity more than 92% through oil well;

3, inject 375 ℃ 9000 tons of hot water that is mixed with extraordinary organic solvent to oil reservoir through oil well;

4, close oil well, vexed well reaction 220 hours;

5, through oil well open flow oil water mixture;

6, normally recover the oil with oil pumper;

7, when the load of oil pumper reaches relevant oil recovery rules regulation numerical value or in 24 hours, increases by 25% suddenly, the stopping production closing well; At first in oil reservoir, inject 200 tons of extraordinary organic solvents then through oil well casing; Then in oil reservoir, inject nitrogen 5000 standard cubic meters of purity more than 92% through oil well casing; Then in oil reservoir, injects 250 ℃ 3000 tons of hot water that is mixed with extraordinary organic solvent again through oil well casing, carry out easy oil reservoir after-treatment, vexed then well reacted 40 hours; The open flow oil water mixture normally recovers the oil with oil pumper then;

In the said hot water that is mixed with extraordinary organic solvent, the ratio of weight and number of its hot water and said extraordinary organic solvent is 100:9.

1) mixed olefins, hybrid ring alkene, mix fragrant alkene, mix residue at the bottom of the still that heavy benzene or Petropols production technology form;

Said mixed olefins, hybrid ring alkene, mix fragrant alkene, close flash point >=20 ℃ and the aromatic hydrocarbons or the arene derivatives content that mix residue at the bottom of the still that heavy benzene or Petropols production technology form is greater than 5%, wherein the content of chlorine element and element sulphur is less than one thousandth;

2) styrene of close flash point >=20 ℃,

The methyl styrene of close flash point >=20 ℃,

The p-methylstyrene of close flash point >=20 ℃;

3) the mixing heavy benzene of close flash point >=20 ℃, wherein the content of chlorine element and element sulphur is less than one thousandth;

4) heptanone of close flash point >=20 ℃;

5) methyl phenyl ethers anisole of close flash point >=20 ℃;

6) ethylene glycol of close flash point >=20 ℃;

7) the diethylene glycol butyl ether of close flash point >=20 ℃;

8) fusel oil of close flash point >=20 ℃;

Embodiment 20

1, in oil reservoir, injects 500 tons of extraordinary organic solvents through oil well

2, in oil reservoir, inject carbon dioxide 100000 standard cubic meters of purity more than 92% through oil well;

3, inject 400 ℃ 10000 tons of hot fluids that is mixed with extraordinary organic solvent to oil reservoir through oil well;

4, close oil well, vexed well reaction 240 hours;

5, through oil well open flow oil water mixture;

6, normally recover the oil with oil pumper;

7, when the load of oil pumper reaches relevant oil recovery rules regulation numerical value or in 24 hours, increases by 25% suddenly, the stopping production closing well; At first in oil reservoir, inject 350 tons of extraordinary organic solvents then through oil well casing; Then in oil reservoir, inject carbon dioxide 10000 standard cubic meters of purity more than 92% through oil well casing; Then in oil reservoir, injects 150 ℃ 6000 tons of water vapours that is mixed with extraordinary organic solvent again through oil well casing, carry out easy oil reservoir after-treatment, vexed then well reacted 80 hours; The open flow oil water mixture normally recovers the oil with oil pumper then;

In the said water vapour that is mixed with extraordinary organic solvent, the ratio of weight and number of its water vapour and said extraordinary organic solvent is 10:1.

1) normal temperature of close flash point >=20 ℃ is liquid 14-alkene or 12-alkene;

2) normal temperature of close flash point >=20 ℃ is liquid cyclopentadiene or dicyclopentadiene;

3) normal temperature of close flash point >=20 ℃ is liquid styrene, methyl styrene or p-methylstyrene.

Claims

1. oil layer wax-condensing type oil reservoir mining method, it is characterized in that: it is to circulate as follows to carry out:

1) in oil reservoir, injects 0.1～500 ton of pour-viscosity reduction agent through oil well;

2) inject 30～400 ℃ 1～10000 ton of the hot fluid that is mixed with the pour-viscosity reduction agent to oil reservoir through oil well; In the said hot fluid that is mixed with the pour-viscosity reduction agent, the ratio of weight and number of its hot fluid and said pour-viscosity reduction agent is 100: 0.001～10;

3) close oil well, vexed well reaction 2～240 hours;

4) through oil well open flow oil water mixture;

5) normally recover the oil with oil pumper;

Said pour-viscosity reduction agent is any or any two kinds or the above mixture of nanometer displacement agent, pour-point depressant, extraordinary organic solvent; Said hot fluid is hot water or water vapour;

Said nanometer displacement agent is made up of following weight percentages:

1) mixture 4～34% a kind of or that two or more arbitrary proportions are mixed between them of the condensed ring aromatic hydrocarbon derivative of biphenyl, condensed ring aromatic hydrocarbon or not chloride element, element sulphur;

2) arene content surpasses 5% liquid petroleum product, Petropols or the normal temperature that normal temperature is liquid state down is the mixture 34～94.3% a kind of or that two or more arbitrary proportions are mixed between them in the hydro carbons nature aggregation of graininess down;

3) mixture 0.1～10% a kind of or that two or more arbitrary proportions are mixed between them of water soluble anionic surfactant, water soluble nonionic surfactant, oil-soluble anion surfactant or oil-soluble non-ionic surface active agent;

4) fusel oil 0.5～5%;

5) close flash point is greater than the mixture 0.5～6% a kind of or that two or more arbitrary proportions are mixed between them of 20 ℃ alcohol ether;

6) on main chain and/or side chain, have respectively and the nonpolar part of paraffin molecule eutectic and the oil of the polarity part of wax Jingjing type distortion is dissolved or the mixture 0.5～9% a kind of or that two or more arbitrary proportions are mixed between them of water-soluble polymer;

7) mixture 0.1～2% a kind of or that two or more arbitrary proportions are mixed between them of peroxide;

The mixture that said extraordinary organic solvent is meant a kind of of following commodity or two or more arbitrary proportions are mixed between them:

4) the liquid ketone of close flash point >=20 ℃;

5) liquid ether of close flash point >=20 ℃;

6) liquid alcohol of close flash point >=20 ℃;

7) the liquid alcohol ether of close flash point >=20 ℃;

8) fusel oil of close flash point >=20 ℃;

Said pour-point depressant is made up of following weight percentages:

1) mixture 20～40% a kind of or that two or more arbitrary proportions are mixed between them of the condensed ring aromatic hydrocarbon derivative of biphenyl, condensed ring aromatic hydrocarbon or not chloride element, element sulphur;

2) arene content surpasses 5% liquid petroleum product, Petropols or the normal temperature that normal temperature is liquid state down is the mixture 40～78.3% a kind of or that two or more arbitrary proportions are mixed between them in the hydro carbons nature aggregation of graininess down;

3) mixture 0.1～2% a kind of or that two or more arbitrary proportions are mixed between them of water soluble anionic surfactant, water soluble nonionic surfactant, oil-soluble anion surfactant or oil-soluble non-ionic surface active agent;

4) fusel oil 0.1～2%;

6) on main chain and/or side chain, have respectively and the nonpolar part of paraffin molecule eutectic and the oil of the polarity part of wax Jingjing type distortion is dissolved or the mixture 1～10% a kind of or that two or more arbitrary proportions are mixed between them of water-soluble polymer.

2. oil layer wax-condensing type oil reservoir mining method, it is characterized in that: it is to circulate as follows to carry out:

3) close oil well, vexed well reaction 2～240 hours;

4) through oil well open flow oil water mixture;

5) normally recover the oil with oil pumper;

6) when the load of oil pumper reaches relevant oil recovery rules regulation numerical value or in 24 hours, increases by 10～30% suddenly, the stopping production closing well; At first in oil reservoir, inject 0.1～500 ton of pour-viscosity reduction agent then through oil well casing; Then in oil reservoir, inject 30～300 ℃ 1～10000 ton of the hot fluid that is mixed with the pour-viscosity reduction agent through oil well casing; Carry out easy oil reservoir after-treatment; Vexed then well reaction 2～120 hours, the open flow oil water mixture normally recovers the oil with oil pumper then;

Said pour-viscosity reduction agent is any or any two kinds or the above mixture of pour-point depressant, nanometer displacement agent, extraordinary organic solvent; Said hot fluid is hot water or water vapour;

Said nanometer displacement agent is made up of following weight percentages:

4) fusel oil 0.5～5%;

4) the liquid ketone of close flash point >=20 ℃;

5) liquid ether of close flash point >=20 ℃;

6) liquid alcohol of close flash point >=20 ℃;

7) the liquid alcohol ether of close flash point >=20 ℃;

8) fusel oil of close flash point >=20 ℃;

Said pour-point depressant is made up of following weight percentages:

4) fusel oil 0.1～2%;

3. oil layer wax-condensing type oil reservoir mining method, it is characterized in that: it is to circulate as follows to carry out:

2) in oil reservoir, inject carbon dioxide or the nitrogen 1000-100000 standard cubic meter of purity more than 92% through oil well;

3) inject 30～400 ℃ 1～10000 ton of the hot fluid that is mixed with the pour-viscosity reduction agent to oil reservoir through oil well; In the said hot fluid that is mixed with the pour-viscosity reduction agent, the ratio of weight and number of its hot fluid and said pour-viscosity reduction agent is 100: 0.001～10;

4) close oil well, vexed well reaction 2～240 hours;

5) through oil well open flow oil water mixture;

6) normally recover the oil with oil pumper;

Said nanometer displacement agent is made up of following weight percentages:

4) fusel oil 0.5～5%;

4) the liquid ketone of close flash point >=20 ℃;

5) liquid ether of close flash point >=20 ℃;

6) liquid alcohol of close flash point >=20 ℃;

7) the liquid alcohol ether of close flash point >=20 ℃;

8) fusel oil of close flash point >=20 ℃;

Said pour-point depressant is made up of following weight percentages:

4) fusel oil 0.1～2%;

4. oil layer wax-condensing type oil reservoir mining method, it is characterized in that: it is to circulate as follows to carry out:

1) in oil reservoir, injects 0.1～500 ton of pour-viscosity reduction agent through oil well

4) close oil well, vexed well reaction 2～240 hours;

5) through oil well open flow oil water mixture;

6) normally recover the oil with oil pumper;

7) when the load of oil pumper reaches relevant oil recovery rules regulation numerical value or in 24 hours, increases by 10～30% suddenly, the stopping production closing well; At first in oil reservoir, inject 0.1～500 ton of pour-viscosity reduction agent then through oil well casing; Then in oil reservoir, inject carbon dioxide or the nitrogen 10-10000 standard cubic meter of purity more than 92% through oil well casing; Then in oil reservoir, inject 30～300 ℃ 1～10000 ton of the hot fluid that is mixed with the pour-viscosity reduction agent again, carry out easy oil reservoir after-treatment, vexed then well reaction 2～120 hours through oil well casing; The open flow oil water mixture normally recovers the oil with oil pumper then;

Said nanometer displacement agent is made up of following weight percentages:

4) fusel oil 0.5～5%;

4) the liquid ketone of close flash point >=20 ℃;

5) liquid ether of close flash point >=20 ℃;

6) liquid alcohol of close flash point >=20 ℃;

7) the liquid alcohol ether of close flash point >=20 ℃;

8) fusel oil of close flash point >=20 ℃;

Said pour-point depressant is made up of following weight percentages:

4) fusel oil 0.1～2%;

5. according to arbitrary said oil layer wax-condensing type oil reservoir mining method among the claim 1-4, it is characterized in that:

6. according to arbitrary said oil layer wax-condensing type oil reservoir mining method among the claim 1-4, it is characterized in that:

Described aromatic hydrocarbons or arene derivatives content greater than 5% liquid petroleum product are: oils, emulsification oils or varsol; Said normal temperature for liquid Petropols is down: normal temperature is down that liquid hydrocarbon petroleum resin or normal temperature is liquid modification hydrocarbon petroleum resin down; Described arene content surpasses 5% liquid petroleum product, normal temperature and is liquid Petropols or normal temperature down in the hydro carbons nature aggregation for graininess down, and the content of its chlorine element and element sulphur is less than one thousandth.

7. according to the said oil layer wax-condensing type oil reservoir mining method of claim 6, it is characterized in that:

Said oils is: diesel oil, solvent naphtha, heavy aromatics fuel oil or plastics, rubber cracking oil; The close flash point of said plastics, rubber cracking oil is greater than 20 ℃;

Said emulsification oils is: diesel oil emulsification, emulsification heavy aromatics fuel oil or oil-in-water type paraffin remover;

Said varsol is: mixed olefins, hybrid ring alkene, mix fragrant alkene, mix residue at the bottom of the still that heavy benzene or Petropols production technology form.

8. according to arbitrary said oil layer wax-condensing type oil reservoir mining method among the claim 1-4, it is characterized in that:

Said water soluble anionic surfactant is: sodium alkyl sulfonate, alkyltrimethyl ammonium chloride, polyethenoxy alkylphenols carboxylic acid sodium salt, polyoxyethylated alkyl alcohol carboxylic acid sodium salt, polyethenoxy alkylphenols sulfonate sodium, polyoxyethylated alkyl alcohol sulfonate sodium, polyoxyethylated alkyl alcohol sulfuric ester sodium salt, polyethenoxy alkylphenols sulfuric ester sodium salt, structural formula are C _nF _2n+1The carboxylic acid sodium type fluorine surfactant of COONa, wherein n representes that 4～10 integer, structural formula are C ₈F ₁₇CONH (CH ₂) ₅The carboxylic acid sodium type fluorine surfactant of COONa, structural formula are C _nF _2n+1SO ₃Na sodium sulfonate type fluorine surfactant, wherein n representes 5 or 7 or 9, structural formula is C ₃F ₇(CH ₂) _nSO ₃The sodium sulfonate type fluorine surfactant of Na, wherein n representes 5 or 7 or 9, structural formula is C _nF _2n+1C ₆H ₄SO ₃The sodium sulfonate type fluorine surfactant of H, wherein n representes 5 or 7 or 9, structural formula is C ₇F ₁₅CH ₂OSO ₃The sulfuric acid type fluorine surfactant of Na, structural formula are (CF ₃) ₂CF ₂(CH ₂) ₆OSO ₃The sulfuric acid type fluorine surfactant of Na or structural formula are C ₈F ₁₇SO ₂NH (CH ₂) ₃NH (CH ₂) ₃NHCH ₂CH ₂OSO ₃The sulfuric acid type fluorine surfactant of Na;

Said water soluble nonionic surfactant is: polyoxyethylated alkyl alcohol, polyethenoxy alkylphenols, polyoxyethylene octyl phenol ether, polyoxyethylene polyoxypropylene propylene glycol or sorbitan monocarboxylate APEO;

Said oil-soluble non-ionic surface active agent is: F (CF ₂) _m(CH ₂) _nH, m=10 or 12 wherein, 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, C ₁₀F ₁₉O (CH ₂CH ₂O) ₂₃C100F ₁₉Or C ₃FO (CF-CFO) _nA _r, wherein n representes 1 or 2, A _rThe expression aryl.

|

CF ₃

9. according to arbitrary said oil layer wax-condensing type oil reservoir mining method among the claim 1-4, it is characterized in that:

Said have oil with the nonpolar part of paraffin molecule eutectic and the polarity part that makes the distortion of wax Jingjing type to dissolve on main chain and/or side chain respectively or water-soluble polymer is: alkylphenol formaldehyde resin, polyacrylate, polycarboxylic acids vinyl acetate; Ethene and vinyl carboxylate copolymer, ethene and carboxylic acid propylene ester copolymer, ethene and acrylate copolymer; Ethene and methacrylate copolymer; Ethene and maleic acid ester copolymer, styrene and maleic acid ester copolymer, alpha-olefin and maleic acid ester copolymer; Vinyl acetate and acrylate copolymer; Vinyl acetate and maleic acid ester 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, vinyl carboxylates and propene sulfonic acid salt copolymer, ethene, acrylic acid ester and propene sulfonic acid salt copolymer or acrylic acid ester, vinylpyridine and butanediol double methacrylate copolymer.

10. according to any said oil layer wax-condensing type oil reservoir mining method among the claim 1-4, it is characterized in that:

11., it is characterized in that according to arbitrary said oil layer wax-condensing type oil reservoir mining method among the claim 1-4:

12. according to arbitrary said oil layer wax-condensing type oil reservoir mining method among the claim 1-4, it is characterized in that: the liquid ketone of said close flash point >=20 ℃ is: cyclopentanone, hexanone, heptanone or octanone.

13. according to arbitrary said oil layer wax-condensing type oil reservoir mining method among the claim 1-4, it is characterized in that: the liquid ether of said close flash point >=20 ℃ is: di-n-butyl ether, isoamyl ether or methyl phenyl ethers anisole.

14. according to arbitrary said oil layer wax-condensing type oil reservoir mining method among the claim 1-4, it is characterized in that: the liquid alcohol of said close flash point >=20 ℃ is: isopropyl alcohol, butanols or ethylene glycol.

15. according to arbitrary said oil layer wax-condensing type oil reservoir mining method among the claim 1-4, it is characterized in that: the liquid alcohol ether of said close flash point >=20 ℃ is butyl glycol ether, diethylene glycol ether or diethylene glycol butyl ether.