CN103670351A - Steam flooding mining method of heavy oil reservoir - Google Patents
Steam flooding mining method of heavy oil reservoir Download PDFInfo
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- CN103670351A CN103670351A CN201210345782.3A CN201210345782A CN103670351A CN 103670351 A CN103670351 A CN 103670351A CN 201210345782 A CN201210345782 A CN 201210345782A CN 103670351 A CN103670351 A CN 103670351A
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Abstract
The invention relates to a steam flooding mining method of a heavy oil reservoir. The method includes: water solution of oil-displacing agent is injected in an oil reservoir layer while steam flooding mining is carried out; according to mass parts, the oil-displacing agent contains 0.001-29 parts of sodium salt and/or calcium salt of sulphonate phenolic resin, 0.001-20 parts of oil-displacing nonionic surface active agent and/or oil-displacing nonionic-anionic surface active agent; the number-average molar mass of the sulphonate phenolic resin is 2000-200000, in the sulphonate phenolic resin, mass fraction of sulfur is 5%-20%. In the method, the oil-displacing agent is used to assist and intensify the steam flooding mining of the heavy oil reservoir, and accordingly heat utilization efficiency and recovery efficiency of the steam flooding mining can be enhanced, and steam flooding mining effect is improved.
Description
Technical field
The present invention relates to a kind of steam flooding exploitation method of heavy crude reservoir.
Background technology
In recent years, along with oil demand constantly soaring and conventional crude output constantly reduce, heavy oil development is just year by year deeply.Thickened oil recovery mode be take oil recovery by heating as main, mainly comprises steam soak, steam flooding, combustion in situ.Wherein, steam flooding is by flooding pattern, from Injection Well, continuously toward oil reservoir, injects the Steam Heating oil reservoir of high mass dryness fraction, viscous crude is driven to producing well around and is plucked out of, it to involve scope large, recovery ratio is high.And steam flooding improves the Main Means of recovery ratio after as steam soak, heavy industrialization application abroad, recovery ratio rises comparatively obvious.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 flooding, and be subject to rock wettability and with the impact of crude oil interfacial characteristics, the effect of simple Thermal Recovery For Viscous Oil By Steam is poor, therefore must carry out relevant art tackling key problem.
At present, the method that improves heavy oil exploitation via steam injection efficiency mainly contains note nitrogen, air injection, note gaseous mixture, chemical injection etc., although the method for gas injection is more effective, but between injection-production well, vapour is altered seriously, and have the explosive potential safety hazard of air-fuel mixture, chemical agent assisted steam flooding can be avoided such problem.
The assisted and strengthened steam flooding of surfactant oil displacement be in steam flooding process using resistant to elevated temperatures surfactant oil displacement as additive with steam injection, in steam injection pipeline, form livesteam, inject subsequently stratum, fully contact with in-place oil, improve wetability and the interfacial tension of reservoir rock, the thermodynamic activity of steam and the glutinous effect of falling of surfactant are brought into play simultaneously, thereby improved steam injection displacement of reservoir oil effect.But owing to can forming the connection of thermal field between well in steam flooding process, steam swept zone temperature range is 100 ℃～300 ℃, the thermal field of steam is along steam injection well 150m left and right radius, central temperature can reach more than 300 ℃, therefore, oil displacement agent must be high temperature resistant and not be changed in the temperature time limit inner boundary performance of growing tall.In addition, at reservoir temperature, raise, in the situation 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 also problem in the urgent need to address in current steam chemical flooding.At present, although the oil displacement efficiency of oil field conventional surfactant is better, still there is the shortcomings such as temperature tolerance is poor, formation stability is poor, interface performance is poor, price is high.
Chinese patent CN102277147A provides a kind of flooding method that is applicable to high temperature and high salt oil deposit, the method is under displacement of reservoir oil temperature >=65 ℃ and high salinity condition, underground dewatered oil is contacted with displacement of reservoir oil composition, by the abundant displacement of the crude oil in rock core out, described displacement of reservoir oil composition comprises APES carboxylate beet alkali surface activator and high molecular polymer.Although the method has solved surfactant oil displacement preferably, under high temperature and high salt condition, oil displacement efficiency is poor, working concentration is high and ternary composite driving in alkali corrosion that stratum and oil well are brought and the problem of incrustation injury, the method is not also suitable for the high-heat heavy crude oil reservoir of exploitation via steam injection.
WO 00/37775 discloses a kind of method that adopts the alkylaryl sulfonate surfactants exploitation waxy crude oil of a specific class.The alpha-olefin logistics that is wide distribution that this surfactant is is 12-58 by average carbon atom number is reacted rear sulfonation and is obtained with aromatic raw material.This surfactant is to crude oil, and particularly waxy crude oil has high solubilization and can form with it the interface of ultralow interfacial tension, but its temperature tolerance and also not mentioned for the effect of viscous crude.
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 phenolic resins fluid loss additive 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 thickened 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 steam flooding exploitation method of heavy crude reservoir, the method adopts the assisted and strengthened steam flooding of oil displacement agent, can improve efficiency of utilization and the recovery ratio of thick oil steam drive, improves steam driving exploitation effect.
A steam flooding exploitation method for heavy crude reservoir, comprising: when carrying out steam driving exploitation, to the aqueous solution that injects oil displacement agent in reservoir formation; The sodium salt of the sulfonated phenol formaldehyde resin that according to the mass fraction, this oil displacement agent contains 0.001～20 part and/or calcium salt, non-ionic surface active agent 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 mass fraction of sulphur is 5%～20%.
More specifically, said method comprises:
(1) continuous steam injection in steam injection well, steam injecting temperature is 250 ℃～300 ℃, steam injection speed is 1.5～2t/ (dham), individual well steam injection speed is 100～150t/d, production-injection ratio is 1～1.5, and the steam quality of controlling arrival shaft bottom is greater than 40%, and reservoir pressure is controlled at 2～4Mpa;
(2) in step (1) steam injection, according to oil displacement agent, be 0.00001～0.1:1 with quality of steam ratio, in steam injection well, inject continuously the oil displacement agent aqueous solution.
To oil displacement agent, the concentration in its aqueous solution has no particular limits in the present invention, as long as can make its aqueous solution have good mobility.The mass fraction of described oil displacement agent in its aqueous solution is generally 0.01～80%.
In described sulfonated phenol formaldehyde resin, the mass fraction 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 displacement agent contains 0.01～5 part and/or calcium salt, non-ionic surface active agent 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 phenolic resins.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, ethyl-phenol, phenylphenol, butylphenol, amyl phenol, bisphenol-A 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 alkali condition limit polycondensation to prepare, and sulfonating 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 surfactant that can be used for oil extraction oil displacement agent with non-ionic surface active agent and the displacement of reservoir oil with Nonionic Anionic Surfactants.
The described displacement of reservoir oil can be one or more in alkyl phenol or AEO, sorbitan ester or sucrose fatty ester and alkylolamides with non-ionic surface active agent.
The oxygen vinyl polymerization degree of described alkyl phenol or AEO 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 alkylolamides is one or more in fatty monoethanol amide and fatty diglycollic amide, and the alkyl carbon number of aliphatic acid is 6～20, is preferably 8～18.Described alkylolamides 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 and the sulfonate of alkyl phenol or AEO.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 metal cation or NH
4 +, the carbon number of R ' is 1～6 scope.Preferred Nonionic Anionic Surfactants is: C6～C20 alkyl phenol (or fatty alcohol) polyethenoxy ether carboxylate, C6～C20 alkyl phenol (or fatty alcohol) polyethenoxy ether sulphonate, C6～C20 alkyl phenol (or fatty alcohol) polyoxyethylene ether phosphate salt, C6～C20 alkyl phenol (or fatty alcohol) polyoxyethylene ether sulfate.
Main feature of the present invention is to adopt oil displacement agent to strengthen thick oil steam drive exploitation, improves efficiency of utilization and the recovery ratio of thick oil steam drive, improves steam driving exploitation effect.Sulfonated phenol formaldehyde resin of the present invention is a kind of water-soluble polymer that is rich in hydroxyl, sulfonic group and phenyl ring, and it applies for many years as fluid loss additive in drilling fluid, but up to now there are no the report of using it for thickened oil recovery field.The inventor finds that sulfonated phenol formaldehyde resin has and well washes viscous crude ability and heat-resisting quantity, is applicable to 300 ℃ of high temperature and cheap of heavy crude heat extraction; Non-ionic surface active agent 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 adsorbed film, composite oil displacement agent, at low concentration and do not add alkali in the situation that, just can form ultralow interfacial tension and stable performance.
The specific 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 triumph isolated island block oil field, select 4 anti-9 injection-production well groups of 70m well spacing, Boiler Steam outlet temperature is 300 ℃, steam injection rate is 1.8t/ (dham), well group day steam injection 540t, individual well 120～150t, by oil displacement agent and quality of steam, than for 0.5:100, inject oil displacement agent (sulfonation phenoxy acetic acid phenol formaldehyde resin simultaneously, the mass fraction of polycondensation monomer sulphur is about 10.8%, number-average molecular weight is between 40000～50000, NPE sulfuric acid, NPES-428, the chemicals technology Co., Ltd product of Foshan City section, the two mass ratio is 70:30), production-injection ratio is 1.2, formation pressure is controlled at below 4MPa, shaft bottom mass dryness fraction is greater than 50%.Whole experimental stage is steam injection 54.1 * 10 altogether
4t, note oil displacement agent 2.7 * 10
3t, oil production 12.4 * 10
4t, stage gas oil ratio 0.23, steam flooding extraction degree is 25.63%.
Embodiment 2
For triumph block oil field, Dan Jia temple, select 4 anti-9 injection-production well groups of 100m well spacing, Boiler Steam outlet temperature is 280 ℃, steam injection rate is 1.5t/ (dham), well group day steam injection 460t, individual well 110～140t, by oil displacement agent and quality of steam, than for 0.5:100, inject oil displacement agent (sulfonated phenol formaldehyde resin simultaneously, the mass fraction of sulphur is about 7.3%, number-average molecular weight is between 6000～8000, polyoxyethylene octadecanol, paregal O-10, Yixing City Jia Jia Chemical Co., Ltd. product, the two mass ratio is 60:40), production-injection ratio is 1.2, formation pressure is controlled at below 4MPa, shaft bottom mass dryness fraction is greater than 50%.Whole experimental stage is steam injection 38.4 * 10 altogether
4t, note oil displacement agent 1.9 * 10
3t, oil production 9.5 * 10
4t, stage gas oil ratio 0.25, steam flooding extraction degree is 21.05%.
Comparative example 1
With commercially available nonionic-anion surfactant NPS-10(dodecylphenol polyoxyethylene ether sulfate, Zibo Hai Jie Chemical Co., Ltd. product) compound oil displacement agent described in replacement embodiment 1, other dosage used, concentration, steam flooding condition are all identical with embodiment 1, and last oil production is 10.6 * 10
4t, steam flooding extraction degree is 21.91%.
Comparative example 2
With commercially available non-ionic surface active agent sorbitan fatty acid ester S-20(Zibo Hai Jie Chemical Co., Ltd. product) replace compound oil displacement agent described in example 2, other dosage used, concentration, steam flooding condition are all identical with embodiment 2, and last oil production is 8.7 * 10
4t, steam flooding extraction degree is 17.98%.
Comparative example 3
With commercially available petroleum sulfonate 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, steam flooding condition are all identical with embodiment 2, and finally oil production is 8.3 * 10
4t, steam flooding extraction degree is 17.12%.
Claims (15)
1. a steam flooding exploitation method for heavy crude reservoir, comprising: when carrying out steam driving exploitation, to the aqueous solution that injects oil displacement agent in reservoir formation; The sodium salt of the sulfonated phenol formaldehyde resin that according to the mass fraction, this oil displacement agent contains 0.001～20 part and/or calcium salt, non-ionic surface active agent 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 mass fraction of sulphur is 5%～20%.
2. according to the steam flooding exploitation method of heavy crude reservoir described in claim 1, it is characterized in that, comprising:
(1) continuous steam injection in steam injection well, steam injecting temperature is 250 ℃～300 ℃, steam injection speed is 1.5～2t/ (dham), individual well steam injection speed is 100～150t/d, production-injection ratio is 1～1.5, and the steam quality of controlling arrival shaft bottom is greater than 40%, and reservoir pressure is controlled at 2～4Mpa;
(2) in step (1) steam injection, according to oil displacement agent, be 0.00001～0.1:1 with quality of steam ratio, in steam injection well, inject continuously the oil displacement agent aqueous solution.
3. according to the steam flooding exploitation method of heavy crude reservoir described in claim 1, it is characterized in that, in described sulfonated phenol formaldehyde resin, the mass fraction of sulphur is 7%～14%.
4. according to the steam flooding exploitation method of heavy crude reservoir described 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 displacement agent contains 0.01～5 part and/or calcium salt, non-ionic surface active agent and/or the displacement of reservoir oil Nonionic Anionic Surfactants for the displacement of reservoir oil of 0.01～5 part.
5. according to the steam flooding exploitation method of heavy crude reservoir described in claim 1, it is characterized in that, the number-average molecular weight of described sulfonated phenol formaldehyde resin is 2000～50000.
6. according to the steam flooding exploitation method of heavy crude reservoir described 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.
7. according to the steam flooding exploitation method of heavy crude reservoir described in claim 6, it is characterized in that, in the polycondensation monomer of described sulfonated phenol formaldehyde resin, phenolic monomers is one or more in cresols, xylenol, ethyl-phenol, phenylphenol, butylphenol, amyl phenol, bisphenol-A and resorcinol.
8. according to the steam flooding exploitation method of heavy crude reservoir described 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.
9. according to the steam flooding exploitation method of heavy crude reservoir described in claim 8, it is characterized in that, in the polycondensation monomer of described sulfonated phenol formaldehyde resin, aldehydes monomer is formaldehyde or polycondensation formaldehyde.
10. according to the steam flooding exploitation method of heavy crude reservoir described in claim 1, it is characterized in that, the described displacement of reservoir oil is one or more in alkyl phenol or AEO, sorbitan ester or sucrose fatty ester and alkylolamides with non-ionic surface active agent.
11. according to the steam flooding exploitation method of heavy crude reservoir described in claim 10, it is characterized in that, the oxygen vinyl polymerization degree of described alkyl phenol or AEO is between 3～90, and total carbon number of alkyl or alkane phenyl is 6～20.
12. according to the steam flooding exploitation method of heavy crude reservoir described in claim 10, it is characterized in that, the fatty acid alkyl carbon number in described sorbitan ester or sucrose fatty ester is 6～20.
13. according to the steam flooding exploitation method of heavy crude reservoir described in claim 10, it is characterized in that, described alkylolamides is one or more in fatty monoethanol amide and fatty diglycollic amide, and the alkyl carbon number of aliphatic acid is 6～20.
14. according to the steam flooding exploitation method of heavy crude reservoir described in claim 13, it is characterized in that, described alkylolamides is coconut oil fatty acid monoethanolamide and/or cocoanut fatty acid diethanolamide.
15. according to the steam flooding exploitation method of heavy crude reservoir described 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 and the sulfonate of alkyl phenol or AEO.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265252B (en) * | 2014-08-19 | 2017-07-07 | 中国石油天然气股份有限公司 | A kind of heavy crude reservoir artificial oil stream displacement recovery method |
| CN107298972A (en) * | 2016-04-15 | 2017-10-27 | 中国石油化工股份有限公司 | Oil production method |
| WO2019180503A1 (en) * | 2018-03-22 | 2019-09-26 | Sasol Performance Chemicals Gmbh | Alkyl alkoxylated carboxylate salts as steam foam additives for heavy oil recovery |
| CN110410047A (en) * | 2019-06-17 | 2019-11-05 | 中国石油天然气股份有限公司 | A kind of flooding method and its gas energy release oil displacement agent for high gassiness oil field |
| CN111944506A (en) * | 2020-09-01 | 2020-11-17 | 宁波锋成先进能源材料研究院有限公司 | Blood pressure-reducing injection-increasing active agent and preparation method thereof |
| CN112745821A (en) * | 2021-01-06 | 2021-05-04 | 中海石油(中国)有限公司 | Temperature-resistant and salt-resistant oil displacement agent for offshore thick oil steam accompanying injection and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4743385A (en) * | 1984-11-21 | 1988-05-10 | Sun Refining And Marketing Company | Oil recovery agent |
| CN101942069A (en) * | 2010-09-07 | 2011-01-12 | 四川正蓉实业有限公司 | Method for preparing modified sulfomethal phenolaldehy resin for drilling liquid |
| CN102002354A (en) * | 2010-11-02 | 2011-04-06 | 上海大学 | Oil displacement agent with ultra-low oil-water interfacial tension and application thereof |
-
2012
- 2012-09-17 CN CN201210345782.3A patent/CN103670351B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4743385A (en) * | 1984-11-21 | 1988-05-10 | Sun Refining And Marketing Company | Oil recovery agent |
| CN101942069A (en) * | 2010-09-07 | 2011-01-12 | 四川正蓉实业有限公司 | Method for preparing modified sulfomethal phenolaldehy resin for drilling liquid |
| CN102002354A (en) * | 2010-11-02 | 2011-04-06 | 上海大学 | Oil displacement agent with ultra-low oil-water interfacial tension and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李黎明等: "新型耐温稠油降粘剂的室内研究", 《精细石油化工进展》, vol. 9, no. 11, 30 November 2008 (2008-11-30), pages 8 - 9 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265252B (en) * | 2014-08-19 | 2017-07-07 | 中国石油天然气股份有限公司 | A kind of heavy crude reservoir artificial oil stream displacement recovery method |
| CN107298972A (en) * | 2016-04-15 | 2017-10-27 | 中国石油化工股份有限公司 | Oil production method |
| CN107298972B (en) * | 2016-04-15 | 2020-03-24 | 中国石油化工股份有限公司 | Oil recovery method |
| WO2019180503A1 (en) * | 2018-03-22 | 2019-09-26 | Sasol Performance Chemicals Gmbh | Alkyl alkoxylated carboxylate salts as steam foam additives for heavy oil recovery |
| CN112513224A (en) * | 2018-03-22 | 2021-03-16 | 萨索尔化学品有限公司 | Alkyl alkoxylated carboxylates as steam foam additives for heavy oil recovery |
| CN112513224B (en) * | 2018-03-22 | 2024-03-26 | 萨索尔化学品有限公司 | Alkyl alkoxylated carboxylates as steam foam additives for heavy oil recovery |
| CN110410047A (en) * | 2019-06-17 | 2019-11-05 | 中国石油天然气股份有限公司 | A kind of flooding method and its gas energy release oil displacement agent for high gassiness oil field |
| CN111944506A (en) * | 2020-09-01 | 2020-11-17 | 宁波锋成先进能源材料研究院有限公司 | Blood pressure-reducing injection-increasing active agent and preparation method thereof |
| CN111944506B (en) * | 2020-09-01 | 2023-02-21 | 宁波锋成先进能源材料研究院有限公司 | Pressure-reducing and injection-increasing active agent and preparation method thereof |
| CN112745821A (en) * | 2021-01-06 | 2021-05-04 | 中海石油(中国)有限公司 | Temperature-resistant and salt-resistant oil displacement agent for offshore thick oil steam accompanying injection and application thereof |
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