CN103666434A - High-temperature-resistant compound oil-displacing agent for thermal recovery of thick oil - Google Patents
High-temperature-resistant compound oil-displacing agent for thermal recovery of thick oil Download PDFInfo
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- CN103666434A CN103666434A CN201210345783.8A CN201210345783A CN103666434A CN 103666434 A CN103666434 A CN 103666434A CN 201210345783 A CN201210345783 A CN 201210345783A CN 103666434 A CN103666434 A CN 103666434A
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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
- C09K8/592—Compositions used in combination with generated heat, e.g. by steam injection
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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
- C09K8/584—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 specific surfactants
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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
- C09K8/588—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 specific polymers
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Abstract
The invention relates to a high-temperature-resistant compound oil-displacing agent for thermal recovery of thick oil. The oil-displacing agent is a water solution and comprises the following components in parts by weight: 0.001-20 parts of sodium salt and/or calcium salt of sulfonated phenol formaldehyde resin, 0.001-20 parts of non-ionic surfactant and/or non-ionic-anion surfactant for displacing oil, wherein the number-average molecular weight of the sulfonated phenol formaldehyde resin is 2000-200000; the mass percentage of sulfur in the sulfonated phenol formaldehyde resin is 5-20 percent. The oil-displacing agent has the advantages of no alkali, strong high-temperature resistance, good interfacial property, high viscosity-reducing rate and low cost.
Description
Technical field
The present invention relates to a kind of high temperature resistant heavy crude heat extraction compound oil displacement agent.
Background technology
In recent years, along with petroleum demand constantly soaring and conventional crude output constantly reduce, heavy oil development is just year by year deeply.For improving thick oil recovery ratio, at home and abroad steam flood has become the heavy crude heat extraction technology of heavy industrialization application.And the feature such as burying of domestic heavy crude reservoir is dark, steam injection pressure is high, mass dryness fraction is low, hydrothermal area is wide, had a strong impact on the oil displacement efficiency of steam flood, therefore must carry out relevant art tackling key problem, specializes in chemistry assisted steam flooding is further to improve the effect of steam flood, to reach the target that increases substantially recovery ratio.
Steam drive development is had relatively high expectations to the heat resistance of oil-displacing agent, 100 ℃～220 ℃ of steam swept zone temperature ranges, the temperature field of steam is along steam injection well 150m left and right radius, and therefore, oil-displacing agent must be high temperature resistant and not be changed in the temperature time limit inner boundary performance of growing tall; Steam flood process requires higher to the interface performance of oil-displacing agent, when reservoir temperature raises, under the condition that viscous force significantly declines, how to reduce capillary force and become the key that affects exploitation effect, therefore reducing remaining oil saturation reduces interfacial tension, is current problem in the urgent need to address.As can be seen here, for the low principal contradiction that affects steam drive development of displacement efficiency under hot conditions, the oil-displacing agent system of developing high temperature resistant high interfacial activity is further to improve the key of steam drive development effect.
At present, in the conventional surfactant oil displacement in oil field, what bibliographical information and practical application were more is nonionogenic tenside, anion surfactant, amphoterics, Gemini surface active agent and the compound between them, although oil displacement efficiency is better, but still there is the shortcomings such as temperature tolerance is poor, formation stability is poor, interface performance is poor, price is high, and most oil-displacing agents for example, to the viscosity reduction ability of viscous crude and washing oil ability effect not obvious:
US 4016932 has reported usings the composite method as oil-displacing agent of sulfonated petro-leum, polyoxyethylene nonylphenol ether and alkali, can be used for highly mineralized formation brines, but its temperature tolerance is limited, and because contain a large amount of bituminous matters and colloid in viscous crude, field conditions is more special, and above-mentioned formula system has much room for improvement to the ability of the washing oil ability of viscous crude and reduction interfacial tension.
WO 00/37775 discloses a kind of method that alkylaryl sulfonate surfactants that adopts a specific class recovers the oil.The alpha-olefin logistics that is wide distribution that this tensio-active agent is is 12-58 by average carbon atom number is reacted rear sulfonation and is obtained with aromatic raw material.This tensio-active agent is to crude oil, and particularly waxy crude oil has high solublization and can form with it the interface of ultra low interfacial tension, but its temperature tolerance and also not mentioned for the effect of viscous crude.
CN 102002354A has reported a kind of oil displacement agent with ultra-low oil-water interfacial tension, and this oil-displacing agent comprises zwitterionics, nonionogenic tenside and water.Wherein zwitterionics is the trimethyl-glycine surfactivity containing C12-C16, and nonionogenic tenside is a kind of molecule that contains 9～10 polyoxyethylene groups.Described oil-displacing agent is in the temperature range of 25～85 ℃, and without adding alkali, just can to make oil water interfacial tension be down to ultralow.But at more than 100 ℃ temperature, the interfacial activity of oil-displacing agent reduces, and cost is also too high.
CN 102161883A has reported the chemically composited oil-displacing agent of a kind of tertiary oil production in oil field, is to be formed by three kinds of surfactant compounds.Wherein, cats product is comprised of branched-chain alkyl quaternary ammonium salt and chlorion or bromide anion; Anion surfactant is hydridization sulfonate or vitriol or the carboxylate salt that adds several polyoxyethylene groups; Nonionic is the tensio-active agent containing side chain hydrophobic grouping and polyoxyethylene group.Although in this oil-displacing agent, the right formation of zwitterion can make it form interfacial adsorption film closely, has reduced to a certain extent interfacial tension, stratum clay mostly is electronegativity, cause cation-adsorption loss large, and cost is also higher.
Sulfonated phenol formaldehyde resin is the most frequently used filtrate reducer for drilling fluid.Prior art discloses the synthesis technique of multiple sulfonated phenol formaldehyde resin, as Chinese patent application CN101942069A, CN102241803A etc.Prior art discloses multiple method of sulfonated phenol formaldehyde resin being carried out to modification equally, as Yang little Hua disclose a kind of amine modification sulphonation resol fluid loss agent SCP (oilfield chemistry. the 13rd volume the 3rd phase .259～260), Li Yao etc. disclose a kind of amphoteric ion type sulfonated phenol formaldehyde resin (western mineral exploration engineering .2010 the 1st phase .43～46), and CN102241804A discloses a kind of preparation method of coupling phenolic resin used for drilling fluid.Up to now, there are no the report for viscous oil recovery field by sulfonated phenol formaldehyde resin.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of composite heavy crude heat extraction oil-displacing agent, this oil-displacing agent contains sulfonated phenol formaldehyde resin and nonionogenic tenside and/or Nonionic Anionic Surfactants, has alkali-free, high-temperature resistance is strong, interface performance good, viscosity break ratio is high, low cost and other advantages.
A kind of high temperature resistant heavy crude heat extraction compound oil displacement agent, this oil-displacing agent is the aqueous solution, the sodium salt of the sulfonated phenol formaldehyde resin that according to the mass fraction, this oil-displacing agent contains 0.001～20 part and/or calcium salt, nonionogenic tenside and/or the displacement of reservoir oil Nonionic Anionic Surfactants for the displacement of reservoir oil of 0.001～20 part; The number-average molecular weight of described sulfonated phenol formaldehyde resin is 2000～200000, and in described sulfonated phenol formaldehyde resin, the massfraction of sulphur is 5%～20%.
The present invention has no particular limits the water yield in compound oil displacement agent, as long as can make described oil-displacing agent have good mobility.According to the mass fraction, this oil-displacing agent generally contains the water of 20～100 parts.
In described sulfonated phenol formaldehyde resin, the massfraction of sulphur is preferably 7%～14%.
In preferred situation, according to the mass fraction, the sodium salt of the sulfonated phenol formaldehyde resin that described oil-displacing agent contains 0.01～5 part and/or calcium salt, nonionogenic tenside and/or the displacement of reservoir oil Nonionic Anionic Surfactants for the displacement of reservoir oil of 0.01～5 part.
The number-average molecular weight of described sulfonated phenol formaldehyde resin is preferably 2000～50000.
Phenolic compound and aldehyde compound polycondensation and resin be referred to as resol.In the present invention, polycondensation monomer to sulfonated phenol formaldehyde resin has no particular limits, but from being easy to get property and the cost consideration of raw material, phenolic monomers of the present invention is preferably one or more in the phenol with following characteristics: containing one or two phenolic hydroxyl group, one or two phenyl ring and carbon number is 6～20; One or more in cresols, xylenol, ethylphenol, phenylphenol, butylphenol, amyl phenol, dihydroxyphenyl propane and Resorcinol more preferably; Aldehydes monomer is preferably one or more in formaldehyde, acetaldehyde, paraformaldehyde and furfural, more preferably formaldehyde or polycondensation formaldehyde.
Sulfonated phenol formaldehyde resin in the present invention can be buied from market at an easy rate, the method preparation that also can adopt classical documents to record.Sulfonated phenol formaldehyde resin generally can adopt the mode of the following sulfonation of alkaline condition limit polycondensation to prepare, and sulphonating agent can adopt Sodium Pyrosulfite.
Generally, the polycondensation monomer of described sulfonated phenol formaldehyde resin is only two kinds of phenolic monomers and aldehydes monomers, and also sulfonated phenol formaldehyde resin is not carried out to modification.But the art is known, except phenolic compound and aldehyde compound, in polycondensation process, can also add the polycondensation monomer of other kind; Also can be by modes such as coupling, grafting to phenolic resin modified.Sulfonated phenol formaldehyde resin of the present invention comprises the sulfonated phenol formaldehyde resin that above-mentioned approach obtains, only otherwise violate object of the present invention.
The described displacement of reservoir oil comprises any the type tensio-active agent that can be used for Oil extraction oil-displacing agent with nonionogenic tenside and the displacement of reservoir oil with Nonionic Anionic Surfactants.
The described displacement of reservoir oil can be one or more in alkylphenol or fatty alcohol-polyoxyethylene ether, sorbitan ester or sucrose fatty ester and alkylol amide with nonionogenic tenside.
The oxygen vinyl polymerization degree of described alkylphenol or fatty alcohol-polyoxyethylene ether is generally between 3～90, and preferably, between 10～40, total carbon number of alkyl or alkane phenyl is 6～20, is preferably 8～16.
Fatty acid alkyl carbon number in described sorbitan ester or sucrose fatty ester is 6～20, is preferably 8～18.
Described alkylol amide is one or more in fatty monoethanol amide and fatty diglycollic amide, and the alkyl carbon number of lipid acid is 6～20, is preferably 8～18.Described alkylol amide is preferably coconut oil fatty acid monoethanolamide and/or cocoanut fatty acid diethanolamide.
Described Nonionic Anionic Surfactants is selected from one or more in phosphate ester salt, sulfuric acid, carboxylate salt and the sulfonate of alkylphenol or fatty alcohol-polyoxyethylene ether.General formula is written as respectively:
R-O-（CH
2CH
2O）
n-PO
3M
2
R-O-（CH
2CH
2O）
n-SO
3M
R-O-（CH
2CH
2O）
n-CH
2COOM
R-O-（CH
2CH
2O）
n-R’SO
3M
R is alkyl or alkane phenyl, and total carbon number is 6～20, preferably 8～16; N is oxygen vinyl polymerization degree, and its value is 3～90; M is monovalence metallic cation or NH
4 +, the carbon number of R ' is 1～6 scope.Preferred Nonionic Anionic Surfactants is: C6～C20 alkylphenol (or fatty alcohol) polyethenoxy ether carboxylate, C6～C20 alkylphenol (or fatty alcohol) polyethenoxy ether sulphonate, C6～C20 alkylphenol (or fatty alcohol) polyoxyethylene ether phosphate salt, C6～C20 alkylphenol (or fatty alcohol) polyoxyethylene ether sulfate.
Sulfonated phenol formaldehyde resin is a kind of water-soluble polymers that is rich in hydroxyl, sulfonic group and phenyl ring, and it applies for many years as fluid loss agent in drilling fluid, but up to now there are no the report of using it for viscous oil recovery field.The inventor finds that sulfonated phenol formaldehyde resin has and well washes viscous crude ability and high thermal resistance, is applicable to the high temperature (general 180～200 ℃) of heavy crude heat extraction and cheap; Nonionogenic tenside has non-ionizing feature in water, and stability is high in solution, good with other types surfactant compatibility, nonionic-anion surfactant also has good heat-resistant salt-resistant, with the composite use of sulfonated phenol formaldehyde resin, can improve sulfonated phenol formaldehyde resin in the compactness of interface formation adsorption film, composite oil-displacing agent, at low concentration and do not add alkali in the situation that, just can form ultra low interfacial tension and stable performance.
Embodiment
In order to understand better the present invention, below in conjunction with embodiment, further illustrate content of the present invention, but content of the present invention is not only confined to the following examples.
Embodiment 1
For two northern viscous crude in Shengli Oil Field (50 ℃ of viscosity are 15470mPa.s), by compound oil displacement agent (sulfonation phenoxy acetic acid phenol formaldehyde resin, the massfraction of sulphur is about 10.8%, number-average molecular weight is between 40000～50000, polyoxyethylene nonylphenol ether sulfuric acid, NPES-428, the chemical technology company limited product of Foshan City section, the two mass ratio is 7:3) to be made into concentration be 0.3% the aqueous solution, with rotation, drip interfacial tensimeter and measure the oil water interfacial tension at its 50 ℃, test result is in Table 1.
Take viscous crude 100g, adding 50g concentration is 1.5% oil-displacing agent solution, stir after 5 minutes at 80 ℃, and the thick oil viscosity of Hakke VT550 type rotational viscosimeter (100r/m) test emulsification, test result is in Table 1.
Take a certain amount of viscous crude, petroleum pitch, complete smart wax, dissolve after mixing and be configured to artificial greasy dirt, with 30～60 ℃ of petroleum ether dissolution greasy dirts, and it is mixed with quartz sand, steaming petroleum ether oil-sand.Then with 0.3% oil-displacing agent solution, clean oil-sand, then test and calculate its washing oil rate (use standard is Q/SH1020 1518-2006) through ultraviolet, the results are shown in Table 1.
Embodiment 2
For Shengli Oil Field Dan Jia temple viscous crude (50 ℃ of viscosity are 9096mPa.s), by compound oil displacement agent (sulphonated phenol urea-formaldehyde resin, the massfraction of sulphur is about 13.7%, number-average molecular weight between 15000～20000, anhydrous sorbitol cetylate, SPAN-40, Jiangsu Hai'an Petrochemical Plant's product, the two mass ratio is 8:2) to be made into concentration be 0.3% the aqueous solution, drips an interfacial tensimeter measure the oil water interfacial tension at its 50 ℃ with rotation, test result is in Table 1.
Take viscous crude 100g, adding 50g concentration is 1.5% oil-displacing agent solution, stir after 5 minutes at 80 ℃, and the thick oil viscosity of Hakke VT550 type rotational viscosimeter (100r/m) test emulsification, test result is in Table 1.
Method configuration oil-sand according to embodiment 1, then cleans oil-sand with 0.3% oil-displacing agent solution, then tests and calculate its washing oil rate (use standard is Q/SH1020 1518-2006) through ultraviolet, the results are shown in Table 1.
Embodiment 3
For From Liaohe Heavy Crude (50 ℃ of viscosity are 4660mPa.s), by compound oil displacement agent (sulfonated phenol formaldehyde resin, the massfraction of sulphur is about 7.3%, number-average molecular weight between 6000～8000, Oleum Cocois alkylolamide, 6501, Hubei emerging milky way Chemical Co., Ltd. product, the two mass ratio is 6:4) to be made into concentration be 0.3% the aqueous solution, drips an interfacial tensimeter measure the oil water interfacial tension at its 50 ℃ with rotation, test result is in Table 1.
Take viscous crude 100g, adding 50g concentration is 1.5% oil-displacing agent solution, stir after 5 minutes at 80 ℃, and the thick oil viscosity of Hakke VT550 type rotational viscosimeter (100r/m) test emulsification, test result is in Table 1.
Method configuration oil-sand according to embodiment 1, then cleans oil-sand with 0.3% oil-displacing agent solution, then tests and calculate its washing oil rate (use standard is Q/SH1020 1518-2006) through ultraviolet, the results are shown in Table 1.
Embodiment 4
By sulfonated phenol formaldehyde resin (massfraction of sulphur is about 9.1%, and number-average molecular weight is between 6000～8000) aging 3h at 300 ℃.
For Xinjiang Tahe Heavy Crude (50 ℃ of viscosity are 32210mPa.s), by compound oil displacement agent (aging rear sulfonated phenol formaldehyde resin, polyoxyethylene octadecanol, paregal O-10, Yixing City Jia Jia Chemical Co., Ltd. product, the two mass ratio is 75:25) to be made into concentration be 0.3% the aqueous solution, drips an interfacial tensimeter measure the oil water interfacial tension at its 50 ℃ with rotation, test result is in Table 1.
Take viscous crude 100g, adding 50g concentration is 1.5% oil-displacing agent solution, stir after 5 minutes at 80 ℃, and the thick oil viscosity of Hakke VT550 type rotational viscosimeter (100r/m) test emulsification, test result is in Table 1.
Method configuration oil-sand according to embodiment 1, then cleans oil-sand with 0.3% oil-displacing agent solution, then tests and calculate its washing oil rate (use standard is Q/SH1020 1518-2006) through purple, the results are shown in Table 1.
Comparative example 1
With commercially available nonionic-anion surfactant NPS-10(4-dodecylphenol polyoxyethylene ether sulfate, Zibo Hai Jie Chemical Co., Ltd. product) compound oil displacement agent described in replacement example 1, other dosage used, concentration, step are all identical with embodiment 1, and test result is in Table 1.
Comparative example 2
With commercially available sulfonated petro-leum type surfactant PS-1(Dongying City section profit Fine Chemical Works product) replace compound oil displacement agent described in embodiment 2, other dosage used, concentration, step are all identical with embodiment 2, and test result is in Table 1.
Comparative example 3
By commercially available sorbitan fatty acid ester S-20(Zibo Hai Jie Chemical Co., Ltd. product) aging 3h at 300 ℃.Then by compound oil displacement agent described in the S-20 replacement embodiment 4 after aging, other dosage used, concentration, step are all identical with embodiment 4, and test result is in Table 1.
Table 1
| Oil-displacing agent type | Interfacial tension, mN/m | Viscosity, mPa.s | Washing oil rate/% |
| Embodiment 1 | 8×10 -2 | 43 | 92.43 |
| Embodiment 2 | 4×10 -2 | 140 | 92.74 |
| Embodiment 3 | 6×10 -2 | 130 | 93.33 |
| Embodiment 4 | 6×10 -2 | 89 | 83.86 |
| Comparative example 1 | 9×10 -1 | 68 | 79.85 |
| Comparative example 2 | 9×10 -2 | Not emulsification | 47.54 |
| Comparative example 3 | 3×10 -1 | Not emulsification | 65.86 |
Claims (15)
1. a high temperature resistant heavy crude heat extraction compound oil displacement agent, this oil-displacing agent is the aqueous solution, the sodium salt of the sulfonated phenol formaldehyde resin that according to the mass fraction, this oil-displacing agent contains 0.001～20 part and/or calcium salt, nonionogenic tenside and/or the displacement of reservoir oil Nonionic Anionic Surfactants for the displacement of reservoir oil of 0.001～20 part; The number-average molecular weight of described sulfonated phenol formaldehyde resin is 2000～200000, and in described sulfonated phenol formaldehyde resin, the massfraction of sulphur is 5%～20%.
2. according to compound oil displacement agent claimed in claim 1, it is characterized in that, in described sulfonated phenol formaldehyde resin, the massfraction of sulphur is 7%～14%.
3. according to compound oil displacement agent claimed in claim 1, it is characterized in that, the sodium salt of the sulfonated phenol formaldehyde resin that according to the mass fraction, described oil-displacing agent contains 0.01～5 part and/or calcium salt, nonionogenic tenside and/or the displacement of reservoir oil Nonionic Anionic Surfactants for the displacement of reservoir oil of 0.01～5 part.
4. according to compound oil displacement agent claimed in claim 1, it is characterized in that, the number-average molecular weight of described sulfonated phenol formaldehyde resin is 2000～50000.
5. according to compound oil displacement agent claimed in claim 1, it is characterized in that, in the polycondensation monomer of described sulfonated phenol formaldehyde resin, phenolic monomers is one or more that have in the phenol of following characteristics: containing one or two phenolic hydroxyl group, one or two phenyl ring and carbon number is 6～20.
6. according to compound oil displacement agent claimed in claim 5, it is characterized in that, in the polycondensation monomer of described sulfonated phenol formaldehyde resin, phenolic monomers is one or more in cresols, xylenol, ethylphenol, phenylphenol, butylphenol, amyl phenol, dihydroxyphenyl propane and Resorcinol.
7. according to compound oil displacement agent claimed in claim 1, it is characterized in that, in the polycondensation monomer of described sulfonated phenol formaldehyde resin, aldehydes monomer is one or more in formaldehyde, acetaldehyde, paraformaldehyde and furfural.
8. according to compound oil displacement agent claimed in claim 7, it is characterized in that, in the polycondensation monomer of described sulfonated phenol formaldehyde resin, aldehydes monomer is formaldehyde or polycondensation formaldehyde.
9. according to compound oil displacement agent claimed in claim 1, it is characterized in that, the described displacement of reservoir oil is one or more in alkylphenol or fatty alcohol-polyoxyethylene ether, sorbitan ester or sucrose fatty ester and alkylol amide with nonionogenic tenside.
10. according to compound oil displacement agent claimed in claim 9, it is characterized in that, the oxygen vinyl polymerization degree of described alkylphenol or fatty alcohol-polyoxyethylene ether is between 3～90, and total carbon number of alkyl or alkane phenyl is 6～20.
11. according to compound oil displacement agent claimed in claim 9, it is characterized in that, the fatty acid alkyl carbon number in described sorbitan ester or sucrose fatty ester is 6～20.
12. according to compound oil displacement agent claimed in claim 9, it is characterized in that, described alkylol amide is one or more in fatty monoethanol amide and fatty diglycollic amide, and the alkyl carbon number of lipid acid is 6～20.
13. according to the compound oil displacement agent described in claim 12, it is characterized in that, described alkylol amide is coconut oil fatty acid monoethanolamide and/or cocoanut fatty acid diethanolamide.
14. according to compound oil displacement agent claimed in claim 1, it is characterized in that, described Nonionic Anionic Surfactants is selected from one or more in phosphate ester salt, sulfuric acid, carboxylate salt and the sulfonate of alkylphenol or fatty alcohol-polyoxyethylene ether.
15. according to compound oil displacement agent claimed in claim 1, it is characterized in that, according to the mass fraction, the water that described oil-displacing agent contains 20～100 parts.
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Cited By (6)
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| CN104130760A (en) * | 2014-07-04 | 2014-11-05 | 中国石油天然气股份有限公司 | Hypercoagulable thick oil activating agent used in water shut-off, and oil well water shut-off method |
| CN104650843A (en) * | 2015-02-16 | 2015-05-27 | 中国石油天然气股份有限公司 | Emulsified viscosity-reduction oil displacement composition for heavy oil reservoirs |
| CN107118754A (en) * | 2014-12-01 | 2017-09-01 | 程叶红 | The scheme of the modifying agent of production oil displacement agent is produced using tea seed cake |
| CN107298971A (en) * | 2016-04-14 | 2017-10-27 | 中国石油化工股份有限公司 | A kind of high temperature resistant heavy alkylbenzene sulfonate system and preparation method thereof |
| CN109097014A (en) * | 2018-07-19 | 2018-12-28 | 中国石油天然气股份有限公司 | It is a kind of to use the underground crosslinked type resin plugging agent and its application that seawater is prepared |
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| CN102391842A (en) * | 2011-09-28 | 2012-03-28 | 中国石油化工集团公司 | Polyamine drilling fluid |
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| CN104130760A (en) * | 2014-07-04 | 2014-11-05 | 中国石油天然气股份有限公司 | Hypercoagulable thick oil activating agent used in water shut-off, and oil well water shut-off method |
| CN107118754A (en) * | 2014-12-01 | 2017-09-01 | 程叶红 | The scheme of the modifying agent of production oil displacement agent is produced using tea seed cake |
| CN107236529A (en) * | 2014-12-01 | 2017-10-10 | 程叶红 | Tea saponin modification agent and its oil displacement agent of preparation |
| CN104650843A (en) * | 2015-02-16 | 2015-05-27 | 中国石油天然气股份有限公司 | Emulsified viscosity-reduction oil displacement composition for heavy oil reservoirs |
| CN104650843B (en) * | 2015-02-16 | 2017-09-01 | 中国石油天然气股份有限公司 | A kind of reducing viscosity by emulsification type displacement composition suitable for heavy crude reservoir |
| CN107298971A (en) * | 2016-04-14 | 2017-10-27 | 中国石油化工股份有限公司 | A kind of high temperature resistant heavy alkylbenzene sulfonate system and preparation method thereof |
| CN107298971B (en) * | 2016-04-14 | 2020-01-17 | 中国石油化工股份有限公司 | High-temperature-resistant heavy alkylbenzene sulfonate system and preparation method thereof |
| CN109097014A (en) * | 2018-07-19 | 2018-12-28 | 中国石油天然气股份有限公司 | It is a kind of to use the underground crosslinked type resin plugging agent and its application that seawater is prepared |
| CN109097014B (en) * | 2018-07-19 | 2020-09-08 | 中国石油天然气股份有限公司 | Underground cross-linking type resin plugging agent capable of being prepared from seawater and application thereof |
| CN116285932A (en) * | 2023-05-22 | 2023-06-23 | 德仕能源科技集团股份有限公司 | Viscous oil viscosity reducer for polymer flooding and preparation method and application thereof |
| CN116285932B (en) * | 2023-05-22 | 2023-08-15 | 德仕能源科技集团股份有限公司 | Viscous oil viscosity reducer for polymer flooding and preparation method and application thereof |
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