CN103773351A - Foam composition for gas displacement of high salinity oil reservoir, preparation method and application - Google Patents
Foam composition for gas displacement of high salinity oil reservoir, preparation method and application Download PDFInfo
- Publication number
- CN103773351A CN103773351A CN201210412617.5A CN201210412617A CN103773351A CN 103773351 A CN103773351 A CN 103773351A CN 201210412617 A CN201210412617 A CN 201210412617A CN 103773351 A CN103773351 A CN 103773351A
- Authority
- CN
- China
- Prior art keywords
- foaming agent
- gas
- alkyl
- foam composition
- anion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000006260 foam Substances 0.000 title claims abstract description 56
- 239000000203 mixture Substances 0.000 title claims abstract description 53
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 9
- 238000002360 preparation method Methods 0.000 title claims abstract description 6
- 239000007789 gas Substances 0.000 claims abstract description 70
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 claims abstract description 32
- -1 polyoxyethylene Polymers 0.000 claims abstract description 29
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims abstract description 10
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229960003237 betaine Drugs 0.000 claims abstract description 6
- 150000002500 ions Chemical class 0.000 claims abstract description 4
- 239000004088 foaming agent Substances 0.000 claims description 68
- 239000003153 chemical reaction reagent Substances 0.000 claims description 19
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 18
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 230000021523 carboxylation Effects 0.000 claims description 10
- 238000006473 carboxylation reaction Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 4
- 150000002191 fatty alcohols Chemical class 0.000 claims description 4
- 238000006116 polymerization reaction Methods 0.000 claims description 4
- 125000000547 substituted alkyl group Chemical group 0.000 claims description 4
- 125000002769 thiazolinyl group Chemical group 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 2
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 2
- 229910052728 basic metal Inorganic materials 0.000 claims description 2
- 150000003818 basic metals Chemical class 0.000 claims description 2
- 239000003637 basic solution Substances 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 235000011089 carbon dioxide Nutrition 0.000 claims description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 125000001424 substituent group Chemical group 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000005465 channeling Effects 0.000 abstract description 2
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 abstract 4
- 229920001451 polypropylene glycol Polymers 0.000 abstract 2
- RZXLPPRPEOUENN-UHFFFAOYSA-N Chlorfenson Chemical compound C1=CC(Cl)=CC=C1OS(=O)(=O)C1=CC=C(Cl)C=C1 RZXLPPRPEOUENN-UHFFFAOYSA-N 0.000 abstract 1
- 150000001408 amides Chemical class 0.000 abstract 1
- 238000000605 extraction Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 21
- 239000000243 solution Substances 0.000 description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000003513 alkali Substances 0.000 description 7
- 238000011084 recovery Methods 0.000 description 7
- 238000003756 stirring Methods 0.000 description 7
- 238000013517 stratification Methods 0.000 description 7
- 239000007864 aqueous solution Substances 0.000 description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 description 5
- 239000011707 mineral Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 208000027418 Wounds and injury Diseases 0.000 description 4
- 239000013543 active substance Substances 0.000 description 4
- 125000003368 amide group Chemical group 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 208000014674 injury Diseases 0.000 description 4
- HLERILKGMXJNBU-UHFFFAOYSA-N norvaline betaine Chemical compound CCCC(C([O-])=O)[N+](C)(C)C HLERILKGMXJNBU-UHFFFAOYSA-N 0.000 description 4
- 239000004094 surface-active agent Substances 0.000 description 4
- 239000011575 calcium Substances 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- FDRCDNZGSXJAFP-UHFFFAOYSA-M sodium chloroacetate Chemical compound [Na+].[O-]C(=O)CCl FDRCDNZGSXJAFP-UHFFFAOYSA-M 0.000 description 3
- VNFVKWMKVDOSKT-LREBCSMRSA-N (2r,3r)-2,3-dihydroxybutanedioic acid;piperazine Chemical compound C1CNCCN1.OC(=O)[C@H](O)[C@@H](O)C(O)=O VNFVKWMKVDOSKT-LREBCSMRSA-N 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 2
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- MRUAUOIMASANKQ-UHFFFAOYSA-N cocamidopropyl betaine Chemical compound CCCCCCCCCCCC(=O)NCCC[N+](C)(C)CC([O-])=O MRUAUOIMASANKQ-UHFFFAOYSA-N 0.000 description 2
- 229940073507 cocamidopropyl betaine Drugs 0.000 description 2
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 229910001425 magnesium ion Inorganic materials 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 description 1
- SQBJBZVNGGZASY-UHFFFAOYSA-N [Na].ClS(=O)(=O)O Chemical compound [Na].ClS(=O)(=O)O SQBJBZVNGGZASY-UHFFFAOYSA-N 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 125000001204 arachidyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 150000001768 cations Chemical group 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 1
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 1
- ILRSCQWREDREME-UHFFFAOYSA-N dodecanamide Chemical compound CCCCCCCCCCCC(N)=O ILRSCQWREDREME-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/594—Compositions used in combination with injected gas, e.g. CO2 orcarbonated gas
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Lubricants (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention relates to a foam composition for gas displacement of a high salinity oil reservoir, a preparation method and an application. The foam composition mainly solves the problems that a foam agent is settled when encountering divalent ions, and causes gas channeling in the existing gas displacement and oil extraction process of the high salinity oil reservoir. The problems are better solved by employing the technical scheme that the foam composition comprises a betaine foam agent, an anionic-non-ionic foam agent and gas which are mixed to form foam, wherein the betaine foam agent is alkyl amide betaine, the anionic-non-ionic foam agent is any one of alkyl polyoxyethylene/polyoxypropylene ether carboxylate or alkyl polyoxyethylene/polyoxypropylene ether sulfonate, the gas is any one of gases with an inert relation with the foam agent, the mole ratio of the betaine foam agent to the anionic-non-ionic foam agent is 1:0.01-1:100, and a volume ratio of the gas to liquid is (0.1-10):1. The foam composition can be used for a gas drive intensified oil production process.
Description
Technical field
The present invention relates to a kind of high salinity reservoir gas drive foam composition and its production and use.
Background technology
How China's main oilfield, through once with after secondary recovery having entered high water-cut stage, improves oil recovery factor, develops to greatest extent remaining reserves, has become a vital task of petroleum industry.Gas drive is to be applied to Complex Reservoir, and especially difficult exploitation oil reservoir improves one of effective means of recovery ratio.But in gas displacement process, exist serious technical problem, because the viscosity contrast of underground crude oil and injecting gas is large, thereby cause disadvantageous mobility ratio, cause early stage gas breakthrough, reservoir coverage is reduced; And due to the nonuniformity of oil reservoir, while particularly there is crack or macropore, can produce serious has channeling, petroleum production reduces.
In order to improve the ability of shutoff most permeable zone, people find through a large amount of research, and foam has than polymkeric substance or glue and better enters and reduce the infiltrative ability of most permeable zone.Mix by adding foaming agent and gas, carry out displacement with the form of aerated fluid, shutoff high permeability zone selectively, adjusts fluid entry profile, increases sweep efficiency.The greatest difficulty running in gas drive foam blocking application process is to be difficult to form foam steady in a long-term.
Current foaming agent used for tertiary oil recovery adopts Recompounded multielement system mostly, comprises nonionic surface active agent and ionogenic surfactant simultaneously, in part formula, also adds the auxiliary agents such as alkali, alcohol, polymkeric substance.As patent CN101619210A provides a kind of for low-permeability oil deposit carbon dioxide foam stabilizer, it is whipping agent that Sodium dodecylbenzene sulfonate is selected in this agent, suds-stabilizing agent is made up of modification guanidine glue, Natvosol, lauryl alcohol, Sodium dodecylbenzene sulfonate is anion surfactant, adopt this agent to make the salt resistant character of system limited as foaming host, work as Ca
2+, Mg
2+while exceeding 300 μ g/g, just Precipitation of foaming agent, affects its foaming properties.For another example patent CN1093589C discloses a kind of foam compsoite oil drive method, wherein use alkali, the tensio-active agent of 0.05%-0.5% and the polymkeric substance of the 0.05%-0.5% composition foaming agent combination of 0.5%-1.5%, because system is containing mineral alkali, injury is brought in stratum and oil well, cause the problem such as etching apparatus and pipeline, and mineral alkali can the serious viscosity that reduces polymkeric substance, have to greatly improve the working concentration of polymkeric substance for reaching required viscosity, the comprehensive cost that makes to recover the oil improves.
Summary of the invention
One of technical problem to be solved by this invention is that in existing gas drive foaming agent chance high salinity precipitation, gas drive process, plugging effect is poor, simultaneously because foam system contains mineral alkali, alcohol etc., injury is brought in stratum and oil well, the problem of etching apparatus and pipeline, provides a kind of new high salinity reservoir gas drive foam composition.Said composition has at salinity 300000mg/L, forms foam and have that resistance factor is high, envelope is altered effectively under the local water condition of calcium ions and magnesium ions concentration 8000mg/L, can not bring injury to stratum and oil well, can etching apparatus and the advantage of pipeline.Two of technical problem to be solved by this invention is to provide a kind of preparation method of the foam composition corresponding with technical solution problem one.Three of technical problem to be solved by this invention is to provide the purposes of a kind of high salinity reservoir gas drive foam composition.
For one of solving the problems of the technologies described above, the technical solution used in the present invention is as follows: a kind of high salinity reservoir gas drive foam composition, comprise trimethyl-glycine foaming agent, anion-nonionic foaming agent and gas, trimethyl-glycine foaming agent, anion-nonionic foaming agent and gas phase are mixed to form foam, wherein trimethyl-glycine foaming agent is alkylamidoalkyl trimethyl-glycine, anion-nonionic foaming agent is any one in alkyl polyoxy second/propylene ether carboxylate or alkyl polyoxy second/propylene ether sulfonate, gas is any one of gas that is inertia relation with foaming agent, described trimethyl-glycine foaming agent and the mol ratio of anion-nonionic foaming agent are 1:0.01～1:100, gas and liquid are that the volume ratio of trimethyl-glycine foaming agent and anion-nonionic foaming agent sum is 0.1～10:1,
Alkyl polyoxyethylene/propylene ether carboxylate general molecular formula is:
Alkyl polyoxyethylene/propylene ether sulfonate general molecular formula is:
Wherein R is C
8～C
30alkyl, thiazolinyl in any one, R ' is C
1～C
10alkyl, substituted alkyl in any one, M is any one in basic metal, alkaline-earth metal, ammonium radical ion, n, m are any one integer or the decimal in 0～30, n+m>=1.
In technique scheme, in described trimethyl-glycine foaming agent alkyl amido betaine alkyl chain, carbon atom number preferred version is 10～20.In described anion-nonionic foaming agent, positively charged ion M preferred version is selected from Na, K, Mg, Ca, NH
4 +in any one, substituent R preferred version is C
10～C
24alkyl, thiazolinyl in any one, spacer R ' preferred version is C
1～C
5alkyl, substituted alkyl in any one, oxyethyl group polymerization degree n preferred version is any one integer or the decimal in 0～20, propoxy-polymerization degree m preferred version is any one integer or the decimal in 0～10, n+m>=1.Described gas preferred version is selected from any one in air, nitrogen, carbonic acid gas; The mol ratio preferred version of trimethyl-glycine foaming agent and anion-nonionic foaming agent is 1:0.1～1:10, and gas is 0.5～5:1 with liquid volume than preferred version.
For solve the problems of the technologies described above two, the technical solution used in the present invention is as follows: the preparation method of foam composition for a kind of high salinity reservoir gas drive, comprises the following steps:
A) fatty alcohol, catalyzer are added to reactor according to mol ratio 1:0.002～0.03, add oxyethane, the propylene oxide of aequum, in 100～200 ℃ of reactions 1～10 hour; Described catalyzer is at least one being selected from CaO, KOH;
B) product of step a is added to sulfonated reagent or carboxylation reagent, fatty alcohol: the mol ratio of sulfonated reagent or carboxylation reagent is 1:1～4, continue reaction 1～20 hour in 50～200 ℃, then add hydrochloric acid to be neutralized to pH<3, and carry out oily water separation, oil phase adds basic solution to neutralize, and finally obtains alkyl polyoxyethylene/propylene ether carboxylate or alkyl polyoxyethylene/propylene ether sulfonate, and described sulfonated reagent is hydroxyl sulfoacid and salt, halogenosulfonic acid and salt thereof; Carboxylation reagent is halogenated carboxylic acid and salt thereof;
C) anion-nonionic foaming agent trimethyl-glycine foaming agent and step b being obtained is dissolved in the water respectively, then mixes according to mol ratio 1:0.1～1:10, last, realizes gas-liquid mixed with the gas that gas drive is used, and forms required foam composition.
For solve the problems of the technologies described above three, the technical solution used in the present invention is as follows: high salinity reservoir gas drive is the oil displacement process for the oil reservoir of salinity 0～300000mg/L with foam composition.
Trimethyl-glycine foaming agent in foam composition of the present invention is owing to containing anionic group and cation group in molecule simultaneously, make whole molecule externally electrically not aobvious, thereby there is the bivalent ions ability of very strong opposing, anion-nonionic tensio-active agent, owing to containing nonionic fragment in molecule, has improved the salt resistant character of this tensio-active agent to a great extent.Moreover, the existence of inorganic salt can also increase the adsorption density of two kinds of tensio-active agents at interface, makes both that composite synergy occur.
In high salinity reservoir gas drive process, adopt foam composition of the present invention, system is not containing mineral alkali, the problem of the injury that while having avoided rig-site utilization, mineral alkali causes stratum, the corrosion that equipment is caused, and macropore plugging effectively, experiment is found, under salinity 300000mg/L, the condition of 60 ℃, this foam envelope is altered composition for CO
2drive middle resistance factor and reach 50, high hypotonic seepage velocity ratio is from independent CO
2drive 125:1 and be down to 2:1, macropore has been realized to effective envelope and altered, drive and improve recovery ratio 9% than independent gas injection, obtained good technique effect.
Below by embodiment, the present invention is further elaborated.
Embodiment
[embodiment 1]
By C
10h
210.8% KOH of OH and weight thereof added in reactor, then adds the oxyethane of aequum, in 200 ℃ of reactions 1 hour; Then according to C
10h
21oH and carboxylation reagent mol ratio 1:1 add sodium chloroacetate, continue to react 20 hours in 50 ℃, finally add hydrochloric acid to be neutralized to pH<3, stratification, and oil phase adds the 30% weight NaOH aqueous solution to neutralize, and obtains anion-nonionic foaming agent.
Anion-nonionic foaming agent prepared by laurylamide base CAB and the present invention is dissolved in the water respectively, stir 30 minutes, be mixed with 0.5% weightaqueous solution, then by above-mentioned foaming agent according to trimethyl-glycine: after anion-nonionic foaming agent mol ratio 1:8 mixes, realize gas-liquid mixed with the gas that gas drive is used, form required foam composition, its composition, structure are in table 1.
[embodiment 2]
By C
20h
410.5% KOH of OH and weight thereof added in reactor, then adds oxyethane, the propylene oxide of aequum, in 100 ℃ of reactions 10 hours; Then according to C
20h
41oH and carboxylation reagent mol ratio 1:1.5 add sodium chloroacetate, continue to react 8 hours in 80 ℃, finally add hydrochloric acid to be neutralized to pH<3, stratification, and oil phase adds the 10% weight KOH aqueous solution to neutralize, and obtains anion-nonionic foaming agent.
Anion-nonionic foaming agent prepared by cocamidopropyl betaine and the present invention is dissolved in the water respectively, stir 30 minutes, be mixed with 0.5% weightaqueous solution, then by above-mentioned foaming agent according to trimethyl-glycine: anion-nonionic foaming agent mol ratio 1:10 mixes, after, realize gas-liquid mixed with the gas that gas drive is used, form required foam composition, its composition, structure are in table 1.
[embodiment 3]
By C
14h
293.0% CaO of OH and weight thereof added in reactor, then adds oxyethane, the propylene oxide of aequum, in 150 ℃ of reactions 10 hours; Then according to C
14h
29oH and carboxylation reagent mol ratio 1:2 add Br (CH
2)
5cOOH, continues to react 1 hour in 100 ℃, finally adds hydrochloric acid to be neutralized to pH<3, stratification, and oil phase adds 10% weight Mg (HCO
3)
2the aqueous solution neutralizes, and obtains anion-nonionic foaming agent.
Anion-nonionic foaming agent prepared by stearyl amido propyl betaine and the present invention is dissolved in the water respectively, stir 30 minutes, be mixed with 0.5% weightaqueous solution, then by above-mentioned foaming agent according to trimethyl-glycine: anion-nonionic foaming agent mol ratio 1:1.4 mixes, after, realize gas-liquid mixed with the gas that gas drive is used, form required foam composition, its composition, structure are in table 1.
[embodiment 4]
By C
24h
491.0% CaO of OH and weight thereof added in reactor, then adds oxyethane, the propylene oxide of aequum, in 140 ℃ of reactions 10 hours; Then according to C
24h
49oH and carboxylation reagent mol ratio 1:3 add sodium chloroacetate, continue to react 16 hours in 60 ℃, finally add hydrochloric acid to be neutralized to pH<3, stratification, and oil phase adds ammoniacal liquor to neutralize, and obtains anion-nonionic foaming agent.
Anion-nonionic foaming agent prepared by cocamidopropyl betaine and the present invention is dissolved in the water respectively, stir 30 minutes, be mixed with 0.5% weightaqueous solution, then by above-mentioned foaming agent according to trimethyl-glycine: anion-nonionic foaming agent mol ratio 1:0.5 mixes, after, realize gas-liquid mixed with the gas that gas drive is used, form required foam composition, its composition, structure are in table 1.
[embodiment 5]
By C
18h
371.5% KOH of OH and weight thereof added in reactor, then adds required oxyethane, propylene oxide, in 180 ℃ of reactions 4 hours; Then according to C
18h
37oH and sulfonated reagent mol ratio 1:3 add chlorsulfonic acid sodium, continue to react 12 hours in 120 ℃, finally add hydrochloric acid to be neutralized to pH<3, stratification, and oil phase adds 10% weight Ca (HCO
3)
2the aqueous solution neutralizes, and obtains anion-nonionic foaming agent.
Anion-nonionic foaming agent prepared by octadecyl amido propyl betaine and the present invention is dissolved in the water respectively, stir 30 minutes, be mixed with 0.5% weightaqueous solution, then by above-mentioned foaming agent according to trimethyl-glycine: anion-nonionic foaming agent mol ratio 1:1.8 mixes, after, realize gas-liquid mixed with the gas that gas drive is used, form required foam composition, its composition, structure are in table 1.
[embodiment 6]
By C
18h
350.8% KOH of OH and weight thereof added in reactor, then adds required oxyethane, propylene oxide, in 160 ℃ of reactions 6 hours; Then according to C
18h
35oH and sulfonated reagent mol ratio 1:4 add chlorine amyl group sodium sulfonate, continue to react 20 hours in 120 ℃, finally add hydrochloric acid to be neutralized to pH<3, stratification, oil phase adds the 30% weight NaOH aqueous solution to neutralize, and obtains anion-nonionic foaming agent.
Anion-nonionic foaming agent prepared by decyl amido propyl betaine and the present invention is dissolved in the water respectively, stir 30 minutes, be mixed with 0.5% weightaqueous solution, then by above-mentioned foaming agent according to trimethyl-glycine: anion-nonionic foaming agent mol ratio 1:0.1 mixes, after, realize gas-liquid mixed with the gas that gas drive is used, form required foam composition, its composition, structure are in table 1.
[embodiment 7]
By C
18h
330.6% KOH of OH and weight thereof added in reactor, then adds required oxyethane, propylene oxide, in 160 ℃ of reactions 6 hours; Then according to C
18h
33oH and sulfonated reagent mol ratio 1:4 add 3-chlorine-2-hydroxyl propanesulfonate, continue to react 8 hours in 180 ℃, finally add hydrochloric acid to be neutralized to pH<3, stratification, oil phase adds the 30% weight NaOH aqueous solution to neutralize, and obtains anion-nonionic foaming agent.
Anion-nonionic foaming agent prepared by eicosyl amido propyl betaine and the present invention is dissolved in the water respectively, stir 30 minutes, be mixed with 0.5% weightaqueous solution, then by above-mentioned foaming agent according to trimethyl-glycine: anion-nonionic foaming agent mol ratio 1:1.3 mixes, after, realize gas-liquid mixed with the gas that gas drive is used, form required foam composition, its composition, structure are in table 1.
Table 1 foam composition composition and structure
[embodiment 8] surfactant composition sealing characteristics is measured
Get surfactant composition in [embodiment 1-7] at salinity 300000mg/L, calcium ions and magnesium ions concentration 8000mg/L, carries out sealing characteristics evaluation experimental and two-tube experiment under 60 ℃ of conditions, and height oozes pipe rate of permeation 1D, hypotonic pipe rate of permeation 0.2D, and gas adopts CO
2, N
2, air, measure pressure difference of blocking, calculate resistance factor and seepage velocity ratio, the results are shown in Table 2.
Composition shutoff experimental result in table 2 embodiment
The research of [embodiment 9] foam composition Oil Displacing Capacity
Be 30 centimetres in length, diameter is 2.5 centimetres, carries out oil displacement test on the rock core that rate of permeation is 1D.Gas drive is used foam composition instead to gas breakthrough, improves oil recovery factor and the results are shown in Table 3.
Table 3 foam composition oil displacement test result
| Composition sequence number | Improve recovery ratio % |
| 1 | 11.0 |
| 2 | 10.0 |
| 3 | 11.5 |
| 4 | 12.5 |
| 5 | 12.5 |
| 6 | 9.0 |
| 7 | 10.1 |
[comparative example 1]
Adopt the experiment condition in embodiment 9, note separately CO
2q is high for gas flow velocity ratio: Q is low is 125:1.
Claims (9)
1. a high salinity reservoir gas drive foam composition, comprise trimethyl-glycine foaming agent, anion-nonionic foaming agent and gas, trimethyl-glycine foaming agent, anion-nonionic foaming agent and gas phase are mixed to form foam, wherein trimethyl-glycine foaming agent is alkylamidoalkyl trimethyl-glycine, anion-nonionic foaming agent is any one in alkyl polyoxy second/propylene ether carboxylate or alkyl polyoxy second/propylene ether sulfonate, gas is any one of gas that is inertia relation with foaming agent, described trimethyl-glycine foaming agent and the mol ratio of anion-nonionic foaming agent are 1:0.01～1:100, gas and liquid are that the volume ratio of trimethyl-glycine foaming agent and anion-nonionic foaming agent sum is 0.1～10:1,
Alkyl polyoxyethylene/propylene ether carboxylate general molecular formula is:
Alkyl polyoxyethylene/propylene ether sulfonate general molecular formula is:
Wherein R is C
8～C
30alkyl, thiazolinyl in any one, R ' is C
1～C
10alkyl, substituted alkyl in any one, M is any one in basic metal, alkaline-earth metal, ammonium radical ion, n, m are any one integer or the decimal in 0～30, n+m>=1.
2. high salinity reservoir gas drive foam composition according to claim 1, is characterized in that in described trimethyl-glycine foaming agent alkyl amido betaine alkyl chain, carbon atom number is 10～20.
3. high salinity reservoir gas drive foam composition according to claim 1, is characterized in that in described anion-nonionic foaming agent, positively charged ion M is selected from Na, K, Mg, Ca, NH
4 +in any one.
4. high salinity reservoir gas drive foam composition according to claim 1, is characterized in that substituent R is C
10～C
24alkyl, thiazolinyl in any one, spacer R ' is C
1～C
5alkyl, substituted alkyl in any one.
5. high salinity reservoir gas drive foam composition according to claim 1, is characterized in that oxyethyl group polymerization degree n is any one integer or the decimal in 0～20, and propoxy-polymerization degree m is any one integer or the decimal in 0～10, n+m >=1.
6. high salinity reservoir gas drive foam composition according to claim 1, is characterized in that described gas is selected from any one in air, nitrogen, carbonic acid gas.
7. high salinity reservoir gas drive foam composition according to claim 1, is characterized in that the mol ratio 1:0.1～1:10 of trimethyl-glycine foaming agent and anion-nonionic foaming agent, and gas is 0.5～5:1 with liquid volume ratio.
8. the preparation method of high salinity reservoir gas drive use foam composition described in claim 1, comprises the following steps:
A) fatty alcohol, catalyzer are added to reactor according to mol ratio 1:0.002～0.03, add oxyethane, the propylene oxide of aequum, in 100～200 ℃ of reactions 1～10 hour; Described catalyzer is at least one being selected from CaO, KOH;
B) product of step a is added to sulfonated reagent or carboxylation reagent, fatty alcohol: the mol ratio of sulfonated reagent or carboxylation reagent is 1:1～4, continue reaction 1～20 hour in 50～200 ℃, then add hydrochloric acid to be neutralized to pH<3, and carry out oily water separation, oil phase adds basic solution to neutralize, and finally obtains alkyl polyoxyethylene/propylene ether carboxylate or alkyl polyoxyethylene/propylene ether sulfonate, and described sulfonated reagent is hydroxyl sulfoacid and salt, halogenosulfonic acid and salt thereof; Carboxylation reagent is halogenated carboxylic acid and salt thereof;
C) anion-nonionic foaming agent trimethyl-glycine foaming agent and step b being obtained is dissolved in the water respectively, then mixes according to mol ratio 1:0.1～1:10, last, realizes gas-liquid mixed with the gas that gas drive is used, and forms required foam composition.
Described in claim 1 high salinity reservoir gas drive with foam composition the oil displacement process for the oil reservoir of salinity 0～300000mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210412617.5A CN103773351B (en) | 2012-10-25 | 2012-10-25 | High salinity reservoir gas drive foam compositions and preparation method and purposes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210412617.5A CN103773351B (en) | 2012-10-25 | 2012-10-25 | High salinity reservoir gas drive foam compositions and preparation method and purposes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103773351A true CN103773351A (en) | 2014-05-07 |
| CN103773351B CN103773351B (en) | 2017-10-27 |
Family
ID=50566126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210412617.5A Active CN103773351B (en) | 2012-10-25 | 2012-10-25 | High salinity reservoir gas drive foam compositions and preparation method and purposes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103773351B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104152128A (en) * | 2014-08-18 | 2014-11-19 | 中国科学院理化技术研究所 | Foam oil displacement agent with oil resistance, and its application |
| WO2016000090A1 (en) * | 2014-07-03 | 2016-01-07 | 中国石油大学(北京) | Oil extraction method of suppressing escape in co2 flooding process in low-permeability fractured oil reservoir by means of two-stage plugging |
| CN105368427A (en) * | 2014-08-27 | 2016-03-02 | 中国石油化工股份有限公司 | Anionic surfactant and preparing method thereof |
| CN106590567A (en) * | 2015-10-20 | 2017-04-26 | 中国石油化工股份有限公司 | Low tension foaming agent for high-salinity strata, and preparation method and applications thereof |
| CN106590564A (en) * | 2015-10-20 | 2017-04-26 | 中国石油化工股份有限公司 | Temperature-resistant salt-resistant low-tension foam flooding composition as well as preparation method and application thereof |
| CN106590607A (en) * | 2015-10-20 | 2017-04-26 | 中国石油化工股份有限公司 | Temperature and salt resistance and low tension foaming agent composition and preparation method of the same |
| CN106634931A (en) * | 2017-01-19 | 2017-05-10 | 中国科学院理化技术研究所 | Foam oil displacement agent with adsorption resistance and application of foam oil displacement agent |
| CN106883833A (en) * | 2017-02-20 | 2017-06-23 | 西安石油大学 | For the oil displacement system of ultrahigh-temperature high salt high rigidity oil reservoir |
| CN107880865A (en) * | 2017-11-01 | 2018-04-06 | 中国石油天然气股份有限公司 | A kind of low interfacial tension foam flooding finish and preparation method thereof |
| CN109135713A (en) * | 2018-09-05 | 2019-01-04 | 安徽炎胜新材料科技有限公司 | A kind of clean fracturing fluid and preparation method thereof for high salinity recovered water |
| CN109777393A (en) * | 2019-03-19 | 2019-05-21 | 中国石油化工股份有限公司 | A kind of foam flooding finish |
| CN111088025A (en) * | 2018-10-23 | 2020-05-01 | 中国石油化工股份有限公司 | Efficient oil washing agent for improving carbon dioxide oil displacement efficiency and preparation method and application thereof |
| CN114479812A (en) * | 2020-10-26 | 2022-05-13 | 中国石油化工股份有限公司 | Surfactant composition with ultralow oil-water interfacial tension and preparation method and application thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101081976A (en) * | 2006-05-29 | 2007-12-05 | 中国科学技术大学 | Fire-resistant non-injury fracturing fluid thickening agent and preparation method and usage thereof |
| CN101495593A (en) * | 2006-07-24 | 2009-07-29 | 巴斯夫欧洲公司 | Mixture for improved foaming in the extraction of petroleum or natural gas |
| CN101580705A (en) * | 2009-06-12 | 2009-11-18 | 中国石油大学(华东) | Foaming agent with low gas liquid ratio foam for common heavy oil reservoir and injection method thereof |
| CN102086389A (en) * | 2010-12-31 | 2011-06-08 | 上海大学 | Temperature-resistant salt-resistant composite foam oil displacement agent for tertiary oil recovery and preparation method thereof |
| CN102312666A (en) * | 2010-07-06 | 2012-01-11 | 中国石油天然气股份有限公司 | Method for improving oil-water displacement recovery ratio of low-permeable oil reservoir |
| CN102485771A (en) * | 2010-12-03 | 2012-06-06 | 中国石油天然气股份有限公司 | Fatty alcohol polyoxypropylene polyoxyethylene ether carboxylate, preparation thereof and application thereof |
-
2012
- 2012-10-25 CN CN201210412617.5A patent/CN103773351B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101081976A (en) * | 2006-05-29 | 2007-12-05 | 中国科学技术大学 | Fire-resistant non-injury fracturing fluid thickening agent and preparation method and usage thereof |
| CN101495593A (en) * | 2006-07-24 | 2009-07-29 | 巴斯夫欧洲公司 | Mixture for improved foaming in the extraction of petroleum or natural gas |
| US20090325824A1 (en) * | 2006-07-24 | 2009-12-31 | Basf Se | Mixture for improved foaming in the extraction of petroleum or natural gas |
| CN101580705A (en) * | 2009-06-12 | 2009-11-18 | 中国石油大学(华东) | Foaming agent with low gas liquid ratio foam for common heavy oil reservoir and injection method thereof |
| CN102312666A (en) * | 2010-07-06 | 2012-01-11 | 中国石油天然气股份有限公司 | Method for improving oil-water displacement recovery ratio of low-permeable oil reservoir |
| CN102485771A (en) * | 2010-12-03 | 2012-06-06 | 中国石油天然气股份有限公司 | Fatty alcohol polyoxypropylene polyoxyethylene ether carboxylate, preparation thereof and application thereof |
| CN102086389A (en) * | 2010-12-31 | 2011-06-08 | 上海大学 | Temperature-resistant salt-resistant composite foam oil displacement agent for tertiary oil recovery and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 胡之力等: "《油田化学剂及应用》", 31 December 1998, 吉林人民出版社 * |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016000090A1 (en) * | 2014-07-03 | 2016-01-07 | 中国石油大学(北京) | Oil extraction method of suppressing escape in co2 flooding process in low-permeability fractured oil reservoir by means of two-stage plugging |
| CN104152128A (en) * | 2014-08-18 | 2014-11-19 | 中国科学院理化技术研究所 | Foam oil displacement agent with oil resistance, and its application |
| CN105368427A (en) * | 2014-08-27 | 2016-03-02 | 中国石油化工股份有限公司 | Anionic surfactant and preparing method thereof |
| CN105368427B (en) * | 2014-08-27 | 2018-08-17 | 中国石油化工股份有限公司 | Anion surfactant and preparation method thereof |
| CN106590607B (en) * | 2015-10-20 | 2019-07-09 | 中国石油化工股份有限公司 | Temperature-resistant anti-salt low-tension foaming agent combination and preparation method thereof |
| CN106590567A (en) * | 2015-10-20 | 2017-04-26 | 中国石油化工股份有限公司 | Low tension foaming agent for high-salinity strata, and preparation method and applications thereof |
| CN106590564A (en) * | 2015-10-20 | 2017-04-26 | 中国石油化工股份有限公司 | Temperature-resistant salt-resistant low-tension foam flooding composition as well as preparation method and application thereof |
| CN106590607A (en) * | 2015-10-20 | 2017-04-26 | 中国石油化工股份有限公司 | Temperature and salt resistance and low tension foaming agent composition and preparation method of the same |
| CN106590564B (en) * | 2015-10-20 | 2019-12-10 | 中国石油化工股份有限公司 | Temperature-resistant salt-resistant low-tension foam flooding composition and preparation method and application thereof |
| CN106634931A (en) * | 2017-01-19 | 2017-05-10 | 中国科学院理化技术研究所 | Foam oil displacement agent with adsorption resistance and application of foam oil displacement agent |
| CN106883833A (en) * | 2017-02-20 | 2017-06-23 | 西安石油大学 | For the oil displacement system of ultrahigh-temperature high salt high rigidity oil reservoir |
| CN106883833B (en) * | 2017-02-20 | 2019-10-25 | 西安石油大学 | Oil displacement system for ultrahigh-temperature high rigidity oil reservoir with high salt |
| CN107880865B (en) * | 2017-11-01 | 2020-03-10 | 中国石油天然气股份有限公司 | Low-interfacial-tension foam oil displacement agent and preparation method thereof |
| CN107880865A (en) * | 2017-11-01 | 2018-04-06 | 中国石油天然气股份有限公司 | A kind of low interfacial tension foam flooding finish and preparation method thereof |
| CN109135713A (en) * | 2018-09-05 | 2019-01-04 | 安徽炎胜新材料科技有限公司 | A kind of clean fracturing fluid and preparation method thereof for high salinity recovered water |
| CN111088025A (en) * | 2018-10-23 | 2020-05-01 | 中国石油化工股份有限公司 | Efficient oil washing agent for improving carbon dioxide oil displacement efficiency and preparation method and application thereof |
| CN111088025B (en) * | 2018-10-23 | 2022-05-24 | 中国石油化工股份有限公司 | Efficient oil washing agent for improving carbon dioxide oil displacement efficiency and preparation method and application thereof |
| CN109777393A (en) * | 2019-03-19 | 2019-05-21 | 中国石油化工股份有限公司 | A kind of foam flooding finish |
| CN109777393B (en) * | 2019-03-19 | 2020-04-14 | 中国石油化工股份有限公司 | Foam oil displacement agent |
| CN114479812A (en) * | 2020-10-26 | 2022-05-13 | 中国石油化工股份有限公司 | Surfactant composition with ultralow oil-water interfacial tension and preparation method and application thereof |
| CN114479812B (en) * | 2020-10-26 | 2023-05-02 | 中国石油化工股份有限公司 | Surfactant composition with ultralow oil-water interfacial tension and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103773351B (en) | 2017-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103773351A (en) | Foam composition for gas displacement of high salinity oil reservoir, preparation method and application | |
| CN103740345B (en) | Foam envelope alters composition and method of making the same and purposes | |
| CN103540304B (en) | Surfactant composition for intensified oil production and preparation method thereof | |
| CN103740357A (en) | Low-tension foaming agent composition and preparation method thereof | |
| CN103666431B (en) | Surfactant composition and preparation method thereof | |
| CN103740354B (en) | A surfactant composition used for tertiary oil recovery and a preparation method thereof | |
| CN104232045B (en) | Composite surface active agent composition and preparation method and application thereof | |
| CN103666430B (en) | For the surfactant composition and preparation method thereof of intensified oil reduction | |
| CN103422840B (en) | Use the flooding method of anions and canons complexed surfactant | |
| CN103540303B (en) | Composite surfactant composition as well as preparation method thereof | |
| CN104232044A (en) | Composite surface active agent composition for tertiary oil recovery and preparation method and application thereof | |
| CN102977872B (en) | A kind of strengthening foam oil-displacing agent for enhancing crude oil recovery efficiency in tertiary recovery and preparation method thereof | |
| CN105368426A (en) | Double hydrophilic head-based anionic surfactant and preparation method thereof | |
| CN102660251A (en) | Temperature-resistant salt-tolerant foaming agent carbon dioxide flooding profile control and preparation method thereof | |
| CN110317595B (en) | High calcium magnesium reservoir CO2Foam foaming liquid composition and preparation method and application method thereof | |
| CN103834379B (en) | A kind of vermiculate glues foam system and the method improving recovery ratio with it | |
| CN109135709B (en) | Viscosity-reducing oil displacement agent and oil displacement system suitable for heavy oil reservoir | |
| CN105368427B (en) | Anion surfactant and preparation method thereof | |
| CN104277814A (en) | Oil-displacement surfactant composition, preparation method and application | |
| CN104277806B (en) | Displacement composition, its preparation method and its application | |
| CN106590606A (en) | Temperature and salt resisting low-tension foam and application thereof in foam plugging | |
| CN105368430A (en) | Oil-displacing agent, preparing method of oil-displacing agent and intensified oil production method | |
| CN104109524B (en) | Reinforced foam flooding composition for high salinity reservoirs, and preparation method thereof | |
| CN103540305A (en) | Surfactant composition for chemical displacement of reservoir oil and preparation method thereof | |
| CN111088013B (en) | Anion-cation composite oil displacement surfactant, preparation method thereof and oil displacement method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |