CS269966B2 - Method of crude oil's outputs increase - Google Patents

Method of crude oil's outputs increase Download PDF

Info

Publication number: CS269966B2
Authority: CS; Czechoslovakia
Prior art keywords: water; oil; surfactant; displacement; anionic surfactant
Prior art date: 1984-02-03

Application number

CS85758A

Other languages

Czech (cs)

English (en)

Other versions

CS75885A2 (en

Inventor

Marc Ing Baviere

Jean-Claude Moulu

Tibor Ing Paal

Gyorgy Ing Tiszai

Gyorgy Ing Gaal

Laszlo Dr Ing Schmidt

Gyula Ing Gesztesi

Original Assignee

Magyar Szenhidrogenipari

Priority date (The priority date 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 date listed.)

1984-02-03

Filing date

1985-02-04

Publication date

1990-05-14

1985-02-04 Application filed by Magyar Szenhidrogenipari filed Critical Magyar Szenhidrogenipari

1989-10-13 Publication of CS75885A2 publication Critical patent/CS75885A2/cs

1990-05-14 Publication of CS269966B2 publication Critical patent/CS269966B2/cs

Links

238000000034 method Methods 0.000 title claims description 50
239000010779 crude oil Substances 0.000 title description 6
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 92
239000004094 surface-active agent Substances 0.000 claims description 64
239000003945 anionic surfactant Substances 0.000 claims description 40
238000006073 displacement reaction Methods 0.000 claims description 38
239000011435 rock Substances 0.000 claims description 35
239000011800 void material Substances 0.000 claims description 30
238000002347 injection Methods 0.000 claims description 28
239000007924 injection Substances 0.000 claims description 28
CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 26
239000003208 petroleum Substances 0.000 claims description 20
LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 18
150000003839 salts Chemical class 0.000 claims description 17
230000015572 biosynthetic process Effects 0.000 claims description 16
238000005755 formation reaction Methods 0.000 claims description 16
229930195733 hydrocarbon Natural products 0.000 claims description 16
150000002430 hydrocarbons Chemical class 0.000 claims description 16
230000008569 process Effects 0.000 claims description 16
239000001569 carbon dioxide Substances 0.000 claims description 13
229910002092 carbon dioxide Inorganic materials 0.000 claims description 13
229920003169 water-soluble polymer Polymers 0.000 claims description 13
239000004215 Carbon black (E152) Substances 0.000 claims description 11
238000005342 ion exchange Methods 0.000 claims description 11
238000005341 cation exchange Methods 0.000 claims description 8
238000003780 insertion Methods 0.000 claims description 6
230000037431 insertion Effects 0.000 claims description 6
239000000654 additive Substances 0.000 claims description 4
239000008346 aqueous phase Substances 0.000 claims description 4
238000005086 pumping Methods 0.000 claims description 4
230000000996 additive effect Effects 0.000 claims description 2
239000003795 chemical substances by application Substances 0.000 claims 2
239000012752 auxiliary agent Substances 0.000 claims 1
239000003623 enhancer Substances 0.000 claims 1
230000002708 enhancing effect Effects 0.000 claims 1
239000003921 oil Substances 0.000 description 87
239000000243 solution Substances 0.000 description 46
238000012360 testing method Methods 0.000 description 36
BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 33
239000007864 aqueous solution Substances 0.000 description 25
239000000126 substance Substances 0.000 description 23
239000000693 micelle Substances 0.000 description 18
150000001768 cations Chemical class 0.000 description 17
239000011148 porous material Substances 0.000 description 17
KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 16
230000014759 maintenance of location Effects 0.000 description 16
239000000203 mixture Substances 0.000 description 16
239000007788 liquid Substances 0.000 description 14
JXLHNMVSKXFWAO-UHFFFAOYSA-N azane;7-fluoro-2,1,3-benzoxadiazole-4-sulfonic acid Chemical compound N.OS(=O)(=O)C1=CC=C(F)C2=NON=C12 JXLHNMVSKXFWAO-UHFFFAOYSA-N 0.000 description 12
125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 description 12
RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 11
239000007789 gas Substances 0.000 description 11
239000000546 pharmaceutical excipient Substances 0.000 description 11
239000011575 calcium Substances 0.000 description 10
239000003350 kerosene Substances 0.000 description 10
125000004432 carbon atom Chemical group C* 0.000 description 9
230000000694 effects Effects 0.000 description 9
QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 8
OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 7
238000010348 incorporation Methods 0.000 description 7
239000012071 phase Substances 0.000 description 7
241000158728 Meliaceae Species 0.000 description 6
229910052791 calcium Inorganic materials 0.000 description 6
230000007423 decrease Effects 0.000 description 6
239000000839 emulsion Substances 0.000 description 6
125000000129 anionic group Chemical group 0.000 description 5
230000000052 comparative effect Effects 0.000 description 4
230000003247 decreasing effect Effects 0.000 description 4
238000009826 distribution Methods 0.000 description 4
238000005553 drilling Methods 0.000 description 4
238000000605 extraction Methods 0.000 description 4
150000002500 ions Chemical class 0.000 description 4
229920000151 polyglycol Polymers 0.000 description 4
239000010695 polyglycol Substances 0.000 description 4
239000011734 sodium Substances 0.000 description 4
QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 3
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
229910019142 PO4 Inorganic materials 0.000 description 3
FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 3
239000002671 adjuvant Substances 0.000 description 3
150000001298 alcohols Chemical class 0.000 description 3
125000001931 aliphatic group Chemical group 0.000 description 3
229910052783 alkali metal Inorganic materials 0.000 description 3
150000001340 alkali metals Chemical class 0.000 description 3
125000000217 alkyl group Chemical group 0.000 description 3
150000007942 carboxylates Chemical class 0.000 description 3
239000004927 clay Substances 0.000 description 3
230000002349 favourable effect Effects 0.000 description 3
239000012530 fluid Substances 0.000 description 3
238000004519 manufacturing process Methods 0.000 description 3
239000002736 nonionic surfactant Substances 0.000 description 3
239000010452 phosphate Substances 0.000 description 3
XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 3
239000000047 product Substances 0.000 description 3
229920006395 saturated elastomer Polymers 0.000 description 3
229910052708 sodium Inorganic materials 0.000 description 3
239000002904 solvent Substances 0.000 description 3
229910021653 sulphate ion Inorganic materials 0.000 description 3
BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
229910000831 Steel Inorganic materials 0.000 description 2
239000004480 active ingredient Substances 0.000 description 2
239000013543 active substance Substances 0.000 description 2
150000001412 amines Chemical class 0.000 description 2
238000006243 chemical reaction Methods 0.000 description 2
239000003792 electrolyte Substances 0.000 description 2
238000002474 experimental method Methods 0.000 description 2
238000001914 filtration Methods 0.000 description 2
230000004927 fusion Effects 0.000 description 2
229910052500 inorganic mineral Inorganic materials 0.000 description 2
150000002576 ketones Chemical class 0.000 description 2
239000000463 material Substances 0.000 description 2
239000004530 micro-emulsion Substances 0.000 description 2
239000011707 mineral Substances 0.000 description 2
WOFPPJOZXUTRAU-UHFFFAOYSA-N octan-4-ol Chemical compound CCCCC(O)CCC WOFPPJOZXUTRAU-UHFFFAOYSA-N 0.000 description 2
238000005457 optimization Methods 0.000 description 2
NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
238000002360 preparation method Methods 0.000 description 2
230000002829 reductive effect Effects 0.000 description 2
239000011780 sodium chloride Substances 0.000 description 2
239000010959 steel Substances 0.000 description 2
AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 2
AZUYLZMQTIKGSC-UHFFFAOYSA-N 1-[6-[4-(5-chloro-6-methyl-1H-indazol-4-yl)-5-methyl-3-(1-methylindazol-5-yl)pyrazol-1-yl]-2-azaspiro[3.3]heptan-2-yl]prop-2-en-1-one Chemical compound ClC=1C(=C2C=NNC2=CC=1C)C=1C(=NN(C=1C)C1CC2(CN(C2)C(C=C)=O)C1)C=1C=C2C=NN(C2=CC=1)C AZUYLZMQTIKGSC-UHFFFAOYSA-N 0.000 description 1
244000291564 Allium cepa Species 0.000 description 1
235000002732 Allium cepa var. cepa Nutrition 0.000 description 1
QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical class N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
241000490229 Eucephalus Species 0.000 description 1
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
JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
230000009471 action Effects 0.000 description 1
230000033228 biological regulation Effects 0.000 description 1
HOWJQLVNDUGZBI-UHFFFAOYSA-N butane;propane Chemical compound CCC.CCCC HOWJQLVNDUGZBI-UHFFFAOYSA-N 0.000 description 1
229910001424 calcium ion Inorganic materials 0.000 description 1
229910052799 carbon Inorganic materials 0.000 description 1
125000005587 carbonate group Chemical group 0.000 description 1
150000004649 carbonic acid derivatives Chemical class 0.000 description 1
230000015556 catabolic process Effects 0.000 description 1
230000008859 change Effects 0.000 description 1
125000000753 cycloalkyl group Chemical group 0.000 description 1
238000006731 degradation reaction Methods 0.000 description 1
230000003111 delayed effect Effects 0.000 description 1
230000001419 dependent effect Effects 0.000 description 1
238000010790 dilution Methods 0.000 description 1
239000012895 dilution Substances 0.000 description 1
238000004090 dissolution Methods 0.000 description 1
150000002148 esters Chemical class 0.000 description 1
239000000945 filler Substances 0.000 description 1
238000009472 formulation Methods 0.000 description 1
150000004676 glycans Chemical class 0.000 description 1
239000003673 groundwater Substances 0.000 description 1
WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
239000004615 ingredient Substances 0.000 description 1
230000003993 interaction Effects 0.000 description 1
230000037427 ion transport Effects 0.000 description 1
239000002563 ionic surfactant Substances 0.000 description 1
229910052742 iron Inorganic materials 0.000 description 1
230000000670 limiting effect Effects 0.000 description 1
239000011777 magnesium Substances 0.000 description 1
229910001425 magnesium ion Inorganic materials 0.000 description 1
238000005259 measurement Methods 0.000 description 1
YLGXILFCIXHCMC-JHGZEJCSSA-N methyl cellulose Chemical compound COC1C(OC)C(OC)C(COC)O[C@H]1O[C@H]1C(OC)C(OC)C(OC)OC1COC YLGXILFCIXHCMC-JHGZEJCSSA-N 0.000 description 1
238000002156 mixing Methods 0.000 description 1
239000012074 organic phase Substances 0.000 description 1
230000036961 partial effect Effects 0.000 description 1
239000002304 perfume Substances 0.000 description 1
230000035699 permeability Effects 0.000 description 1
238000005504 petroleum refining Methods 0.000 description 1
230000000704 physical effect Effects 0.000 description 1
229920002492 poly(sulfone) Polymers 0.000 description 1
229920002401 polyacrylamide Polymers 0.000 description 1
229920000642 polymer Polymers 0.000 description 1
239000002861 polymer material Substances 0.000 description 1
229920001282 polysaccharide Polymers 0.000 description 1
239000005017 polysaccharide Substances 0.000 description 1
239000002244 precipitate Substances 0.000 description 1
238000001556 precipitation Methods 0.000 description 1
239000003380 propellant Substances 0.000 description 1
239000010453 quartz Substances 0.000 description 1
230000007420 reactivation Effects 0.000 description 1
238000011084 recovery Methods 0.000 description 1
230000000717 retained effect Effects 0.000 description 1
239000004576 sand Substances 0.000 description 1
230000035945 sensitivity Effects 0.000 description 1
VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
230000000087 stabilizing effect Effects 0.000 description 1
229910001220 stainless steel Inorganic materials 0.000 description 1
239000010935 stainless steel Substances 0.000 description 1
230000008961 swelling Effects 0.000 description 1
230000002195 synergetic effect Effects 0.000 description 1
239000008215 water for injection Substances 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
- C09K8/584—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
- 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

Landscapes

Chemical & Material Sciences (AREA)
Oil, Petroleum & Natural Gas (AREA)
Life Sciences & Earth Sciences (AREA)
General Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Materials Engineering (AREA)
Organic Chemistry (AREA)
Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Colloid Chemistry (AREA)
Lubricants (AREA)

CS85758A 1984-02-03 1985-02-04 Method of crude oil's outputs increase CS269966B2 (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR8401652A FR2559203B1 (fr)	1984-02-03	1984-02-03	Procede de recuperation assistee du petrole par injection d'une solution micellaire d'agents tensio-actifs presentant un gradient de solubilite dans l'eau

Publications (2)

Publication Number	Publication Date
CS75885A2 CS75885A2 (en)	1989-10-13
CS269966B2 true CS269966B2 (en)	1990-05-14

Family

ID=9300724

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CS85758A CS269966B2 (en)	1984-02-03	1985-02-04	Method of crude oil's outputs increase

Country Status (10)

Country	Link
US (1)	US4648451A (pl)
CA (1)	CA1314205C (pl)
CS (1)	CS269966B2 (pl)
DD (1)	DD232085A5 (pl)
DE (1)	DE3503707A1 (pl)
FR (1)	FR2559203B1 (pl)
HU (1)	HU204921B (pl)
IN (1)	IN163929B (pl)
PL (1)	PL149300B1 (pl)
YU (1)	YU45228B (pl)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US10577531B2 (en)	2013-03-14	2020-03-03	Flotek Chemistry, Llc	Polymers and emulsions for use in oil and/or gas wells

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3344857A (en) *	1965-03-08	1967-10-03	Phillips Petroleum Co	Fluid drive production of oil
US3474864A (en) *	1967-10-09	1969-10-28	Mobil Oil Corp	Method of desorbing surfactant and reusing it in flooding water
US3455385A (en) *	1967-12-26	1969-07-15	Marathon Oil Co	Production of crude oil from a watered-out subterranean formation
US3740343A (en) *	1967-12-26	1973-06-19	Marathon Oil Co	High water content oil-external micellar dispersions
US3623553A (en) *	1970-03-16	1971-11-30	Marathon Oil Co	Flooding with miscible-type fluid slugs having different brine tolerances
US3990515A (en) *	1974-12-24	1976-11-09	Sun Oil Co	Waterflooding process with recovery of lost surfactant
US4042030A (en) *	1976-05-24	1977-08-16	Mobil Oil Corporation	Oil recovery by viscous waterflooding
US4099569A (en) *	1976-09-20	1978-07-11	Texaco Inc.	Oil recovery process using a tapered surfactant concentration slug
US4074759A (en) *	1976-09-20	1978-02-21	Texaco Inc.	Oil recovery process using a polymer slug with tapered surfactant concentration
US4074755A (en) *	1977-03-21	1978-02-21	Shell Oil Company	Ion exchange controlled chemically aided waterflood process
DE2912663A1 (de) *	1978-04-28	1979-10-31	Texaco Development Corp	Verfahren zur oelfoerderung aus einer untertaegigen, oelfuehrenden lagerstaette
US4276933A (en) *	1978-04-28	1981-07-07	Texaco Inc.	Surfactant waterflood method for the recovery of oil
US4271907A (en) *	1979-07-02	1981-06-09	Exxon Production Research Company	Microemulsions which compatibly incorporate viscosifiers and their use in enhanced oil recovery
US4232737A (en) *	1979-11-26	1980-11-11	Texaco Inc.	Double tapered surfactant waterflood oil recovery process
US4287950A (en) *	1980-04-03	1981-09-08	Exxon Research & Engineering Co.	Gas pre-injection for chemically enhanced oil recovery
US4353806A (en) *	1980-04-03	1982-10-12	Exxon Research And Engineering Company	Polymer-microemulsion complexes for the enhanced recovery of oil
DE3170092D1 (en) *	1980-04-03	1985-05-30	Exxon Research Engineering Co	Polymer microemulsion complexes and their use for the enhanced recovery of oil
US4421168A (en) *	1980-11-10	1983-12-20	Mobil Oil Corporation	Surfactant waterflooding with graded salinity drive for oil recovery
US4463806A (en) *	1980-12-30	1984-08-07	Mobil Oil Corporation	Method for surfactant waterflooding in a high brine environment
US4433730A (en) *	1981-03-30	1984-02-28	Standard Oil Company	Optimum grading of chemical concentrations in a micellar flood
US4438002A (en) *	1982-09-20	1984-03-20	Texaco Inc.	Surfactant flooding solution

1984
- 1984-02-03 FR FR8401652A patent/FR2559203B1/fr not_active Expired
1985
- 1985-01-28 IN IN73/MAS/85A patent/IN163929B/en unknown
- 1985-01-31 US US06/696,906 patent/US4648451A/en not_active Expired - Fee Related
- 1985-02-01 HU HU85385A patent/HU204921B/hu not_active IP Right Cessation
- 1985-02-01 YU YU154/85A patent/YU45228B/xx unknown
- 1985-02-01 PL PL1985251804A patent/PL149300B1/pl unknown
- 1985-02-01 DD DD85272976A patent/DD232085A5/de not_active IP Right Cessation
- 1985-02-01 CA CA000473407A patent/CA1314205C/fr not_active Expired - Fee Related
- 1985-02-04 DE DE19853503707 patent/DE3503707A1/de not_active Withdrawn
- 1985-02-04 CS CS85758A patent/CS269966B2/cs unknown

Also Published As

Publication number	Publication date
DE3503707A1 (de)	1985-08-08
PL251804A1 (en)	1985-11-05
HUT40220A (en)	1986-11-28
IN163929B (pl)	1988-12-10
FR2559203A1 (fr)	1985-08-09
FR2559203B1 (fr)	1986-10-03
DD232085A5 (de)	1986-01-15
CA1314205C (fr)	1993-03-09
YU45228B (en)	1992-05-28
PL149300B1 (en)	1990-01-31
US4648451A (en)	1987-03-10
YU15485A (en)	1988-04-30
CS75885A2 (en)	1989-10-13
HU204921B (en)	1992-02-28

Publication	Publication Date	Title
CA2210795C (en)	2005-05-10	Oil and gas field chemicals
US4739831A (en)	1988-04-26	Gas flooding process for the recovery of oil from subterranean formations
US4722396A (en)	1988-02-02	Process for oil recovery from subterranean reservoir rock formations
CA1136840A (en)	1982-12-07	Microemulsions which compatibly incorporate viscosifiers and their use in enhanced oil recovery
RU2363718C2 (ru)	2009-08-10	Композиция и способ повышенной добычи нефти
US4424863A (en)	1984-01-10	Oil recovery by waterflooding
IL31114A (en)	1972-07-26	A process of recovering crude oil from an oil-bearing subterranean formation
EP0181915B1 (en)	1990-03-28	Surfactant compositions for steamfloods
US4624314A (en)	1986-11-25	Modified waterflood technique for enhanced hydrocarbon recovery from argillaceous subterranean reservoirs
US4582138A (en)	1986-04-15	Method for oil recovery from reservoir rock formations
US3799264A (en)	1974-03-26	Surfactant oil recovery process for use in formations containing high concentrations of polyvalent ions such as calcium or magnesium
US4438002A (en)	1984-03-20	Surfactant flooding solution
US4192382A (en)	1980-03-11	High conformance enhanced oil recovery process
CS269966B2 (en)	1990-05-14	Method of crude oil's outputs increase
US4161983A (en)	1979-07-24	High conformance oil recovery process
EP0272406A2 (de)	1988-06-29	Verfahren zur erhöhten Gewinnung von Erdöl aus einer unterirdischen Lagerstätte durch Tensidfluten
US4160480A (en)	1979-07-10	High conformance oil recovery process
US4161982A (en)	1979-07-24	High conformance enhanced oil recovery process
US4194563A (en)	1980-03-25	High conformance enhanced oil recovery process
US4662445A (en)	1987-05-05	Method of increasing oil recovery by grading the ratio of monosulfonates and disulfonates
US4161218A (en)	1979-07-17	High conformance enhanced oil recovery process
CA1129634A (en)	1982-08-17	Polymer thickener in water-alternating gas process for oil recovery
EP0088206A2 (de)	1983-09-14	Verfahren zur Gewinnung von Öl aus einer unterirdischen Lagerstätte
GB2156406A (en)	1985-10-09	Crude oil recovery
US4217957A (en)	1980-08-19	Oil recovery method