GB2127462A - Compositions suitable for modifying wettability and their use - Google Patents
Compositions suitable for modifying wettability and their use Download PDFInfo
- Publication number
- GB2127462A GB2127462A GB08322744A GB8322744A GB2127462A GB 2127462 A GB2127462 A GB 2127462A GB 08322744 A GB08322744 A GB 08322744A GB 8322744 A GB8322744 A GB 8322744A GB 2127462 A GB2127462 A GB 2127462A
- Authority
- GB
- United Kingdom
- Prior art keywords
- compound
- composition
- surface active
- formation
- active compound
- 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
- 239000000203 mixture Substances 0.000 title claims abstract description 23
- 239000004094 surface-active agent Substances 0.000 claims abstract description 14
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000010779 crude oil Substances 0.000 claims abstract description 8
- 150000004676 glycans Chemical class 0.000 claims abstract description 8
- 229920001282 polysaccharide Polymers 0.000 claims abstract description 8
- 239000005017 polysaccharide Substances 0.000 claims abstract description 8
- 239000006185 dispersion Substances 0.000 claims abstract description 4
- 125000005702 oxyalkylene group Chemical group 0.000 claims abstract description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 3
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 claims abstract description 3
- 125000001183 hydrocarbyl group Chemical group 0.000 claims abstract 2
- 150000001875 compounds Chemical class 0.000 claims description 17
- 239000003921 oil Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 10
- 238000011084 recovery Methods 0.000 claims description 9
- 125000000129 anionic group Chemical group 0.000 claims description 5
- 238000009877 rendering Methods 0.000 abstract 1
- 239000004576 sand Substances 0.000 description 8
- FEBUJFMRSBAMES-UHFFFAOYSA-N 2-[(2-{[3,5-dihydroxy-2-(hydroxymethyl)-6-phosphanyloxan-4-yl]oxy}-3,5-dihydroxy-6-({[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}methyl)oxan-4-yl)oxy]-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl phosphinite Chemical compound OC1C(O)C(O)C(CO)OC1OCC1C(O)C(OC2C(C(OP)C(O)C(CO)O2)O)C(O)C(OC2C(C(CO)OC(P)C2O)O)O1 FEBUJFMRSBAMES-UHFFFAOYSA-N 0.000 description 6
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
- 229920002305 Schizophyllan Polymers 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- LVTJOONKWUXEFR-FZRMHRINSA-N protoneodioscin Natural products O(C[C@@H](CC[C@]1(O)[C@H](C)[C@@H]2[C@]3(C)[C@H]([C@H]4[C@@H]([C@]5(C)C(=CC4)C[C@@H](O[C@@H]4[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@@H](O)[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@H](CO)O4)CC5)CC3)C[C@@H]2O1)C)[C@H]1[C@H](O)[C@H](O)[C@H](O)[C@@H](CO)O1 LVTJOONKWUXEFR-FZRMHRINSA-N 0.000 description 5
- 238000009736 wetting Methods 0.000 description 5
- FSSPGSAQUIYDCN-UHFFFAOYSA-N 1,3-Propane sultone Chemical compound O=S1(=O)CCCO1 FSSPGSAQUIYDCN-UHFFFAOYSA-N 0.000 description 4
- 239000013535 sea water Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 229920002907 Guar gum Polymers 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000008186 active pharmaceutical agent Substances 0.000 description 3
- 229960002154 guar gum Drugs 0.000 description 3
- 235000010417 guar gum Nutrition 0.000 description 3
- 239000000665 guar gum Substances 0.000 description 3
- 229920001223 polyethylene glycol Polymers 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- JKTAIYGNOFSMCE-UHFFFAOYSA-N 2,3-di(nonyl)phenol Chemical compound CCCCCCCCCC1=CC=CC(O)=C1CCCCCCCCC JKTAIYGNOFSMCE-UHFFFAOYSA-N 0.000 description 2
- -1 3-Propanesultone Sodium hydride Chemical compound 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- SBZXBUIDTXKZTM-UHFFFAOYSA-N diglyme Chemical compound COCCOCCOC SBZXBUIDTXKZTM-UHFFFAOYSA-N 0.000 description 2
- 150000002430 hydrocarbons Chemical group 0.000 description 2
- KCXFHTAICRTXLI-UHFFFAOYSA-N propane-1-sulfonic acid Chemical group CCCS(O)(=O)=O KCXFHTAICRTXLI-UHFFFAOYSA-N 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 150000008053 sultones Chemical class 0.000 description 2
- UWHCKJMYHZGTIT-UHFFFAOYSA-N tetraethylene glycol Chemical compound OCCOCCOCCOCCO UWHCKJMYHZGTIT-UHFFFAOYSA-N 0.000 description 2
- OMDQUFIYNPYJFM-XKDAHURESA-N (2r,3r,4s,5r,6s)-2-(hydroxymethyl)-6-[[(2r,3s,4r,5s,6r)-4,5,6-trihydroxy-3-[(2s,3s,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]methoxy]oxane-3,4,5-triol Chemical compound O[C@@H]1[C@@H](O)[C@@H](O)[C@@H](CO)O[C@@H]1OC[C@@H]1[C@@H](O[C@H]2[C@H]([C@@H](O)[C@H](O)[C@@H](CO)O2)O)[C@H](O)[C@H](O)[C@H](O)O1 OMDQUFIYNPYJFM-XKDAHURESA-N 0.000 description 1
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 1
- VMSUVWZFCQSDRU-UHFFFAOYSA-N 3-(3-sulfopropoxy)propane-1-sulfonic acid Chemical compound OS(=O)(=O)CCCOCCCS(O)(=O)=O VMSUVWZFCQSDRU-UHFFFAOYSA-N 0.000 description 1
- 229940126062 Compound A Drugs 0.000 description 1
- 244000007835 Cyamopsis tetragonoloba Species 0.000 description 1
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical compound [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 description 1
- 229920000926 Galactomannan Polymers 0.000 description 1
- 229920001503 Glucan Polymers 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 241001558929 Sclerotium <basidiomycota> Species 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000010564 aerobic fermentation Methods 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 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 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 239000012312 sodium hydride Substances 0.000 description 1
- 229910000104 sodium hydride Inorganic materials 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000003756 stirring Methods 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
- C09K8/02—Well-drilling compositions
- C09K8/04—Aqueous well-drilling compositions
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
- C08B37/0024—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid beta-D-Glucans; (beta-1,3)-D-Glucans, e.g. paramylon, coriolan, sclerotan, pachyman, callose, scleroglucan, schizophyllan, laminaran, lentinan or curdlan; (beta-1,6)-D-Glucans, e.g. pustulan; (beta-1,4)-D-Glucans; (beta-1,3)(beta-1,4)-D-Glucans, e.g. lichenan; Derivatives thereof
-
- 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
- C09K23/00—Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
-
- 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
- C09K23/00—Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
- C09K23/02—Alkyl sulfonates or sulfuric acid ester salts derived from monohydric alcohols
-
- 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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/607—Compositions for stimulating production by acting on the underground formation specially adapted for clay formations
Abstract
A composition suitable for modifying the wettability of an underground formation by rendering it water wettable in the presence of crude oil comprises an aqueous saline solution or dispersion of a surface active compound which contains in its molecule a hydrophilic group attached via hydrocarbon groups to at least two sulphonate groups. The hydrophilic group can be an oxyalkylene chain or a polysaccharide.
Description
SPECIFICATION
Compositions suitable for modifying wettability and their use
This invention relates to compositions suitable for use in the recovery of crude oil, in particular to compositions suitable for modifying the wettability of a formation and also to a method of employing same.
The use of surface active compositions to assist in the recovery of crude oil from an underground formation has been previously proposed and a variety of compositions have been described which modify the wettability of the underground formation.
An improved composition has now been invented which has improved wetting characteristics as compared with those previously described.
According to the present invention a composition suitable for modifying the wettability of an underground formation comprises an aqueous saline solution or dispersion of a surface active compound which contains in its molecule a hydrophilic group attached via hydrocarbon groups to at least two sulphonate groups.
The hydrophilic group can be an oxyalkylene chain with from 3 to 30 oxyalkylene units or a polysaccharide and the hydrocarbon group joining the hydrophilic group to the sulphonate can have from 1 to 5 carbon atoms.
The composition may also contain an anionic or non ionic surface active compound of the type used in enhanced oil recovery. The latter is less strongly adsorbed on the formation as a result of the action of the former.
Conveniently the surface active compound may be prepared by reaction of a polyethylene glycol or a polysaccharide such as guar gum or scleroglucan with a sulphonating agent such as a sultone, for example propane sultone, in proportions such that at least two propylsulphonate groups are introduced into the molecule.
The preparation of polysaccharide derivatives by the reaction with a sultone has been previously described in U.S. Patent No. 3,046,272.
A preferred polysaccharide is scleroglucan. Scieroglucan is a neutral glucan produced by the aerobic fermentation of D-glucose by selected species of Sclerotium. As an alternative to scleroglucan there can be used guar gum, a galactomannan obtained from the seed of the guar plant.
These and other suitable polysaccharides are described in "Industrial Gums" by R. L. Whistler,
Academic Press, N.Y., 1973, 2nd Edition.
According to another aspect of the present invention, a method of treating a formation to either maintain its water wettability in the presence of crude oil or modify same to a water wettable condition in the presence of crude oil comprises contacting the formation with an effective amount of a composition as hereinbefore described.
There can also be included in the composition or added subsequently an anionic or nonionic surface active compound of the type used in enhanced oil recovery. The latter is less strongly adsorbed on the formation as a result of the action of the former.
The method may include a flooding operation commonly referred to as enhanced oil recovery or a more localised well treatment, for example to improve the injectivity of a water injection well.
The invention is illustrated by the following Examples.
PREPARATION 1
Reaction of scleroglucan with 1,3-propanesultone to prepare the sulphopropyl ether of scleroglucan (DS 0.84) Compound (A)
Scleroglucan (10 g) was slurried with aqueous isopropanol (60 ml, 50%) and the mixture was purged with nitrogen for 1 h at 400. Aqueous sodium hydroxide (3.85 g, 50%) was added and the mixture was stirred at 400 for 0.25 h. 1 3-Propanesultone (5.84 g, 48 mM) was added and the mixture was stirred at 60--700 for 1.5 h. The sequential addition of the same amounts of these two reagents was then repeated followed by a further heating period of 1.5 h at 60--700. After cooling, the spongy brown solid was filtered off, washed with 50% aqueous isopropanol (100 ml) followed by isopropanol (50 ml), and dried to give a hard yellow solid.
An exactly similar procedure was used to prepare propanesulphonated guar gum with DS 0.84
Compound (B). The degrees of substitution can be controlled by adjusting the quantities of reagents.
The abbreviation DS means the degree of substitution.
PREPARATION 2
Reaction of Tetraethyleneglycol with Sodium Hydride and 1 3-Propanesultone Sodium hydride (1.56 g, 0.052 M, 80% dispersion in oil) was added portionwise to a stirred solution of tetraethyleneglycol (5 g, 0.025 M) in dry diglyme (100 ml). The mixture was maintained under a nitrogen atmosphere and stirred at room temperature for 2 h (or until effervescence ceased). A solution of 1,3-propanesultone (6.23 g, 0.051 M) in diglyme (25 ml) was added dropwise with stirring and the reaction mixture was then heated at 1200 for 6 h.The cooled mixture was filtered and the precipitated solid was washed with ether and dried under vacuum (9.21 g, 74%). Disodium 4:7:10:13:1 6-pentaoxanonadecane- 1,19-disulphonate was confirmed by ir and H1 and C13 nmr spectra.
The reaction may be illustrated thus:
Compound (C)
EXAMPLE 1
Solutions of the compounds of formulae (A), (B) and (C) prepared as described above were made up with acid adjusted sea water (pH 6.5 -- adjusted with HCI) to a concentration of 0.2% by weight.
Forties separator sand (MeOH/toluene extracted) in size fraction greater than 500 micron was mixed with excess surfactant at 96"C for a minimum of 1 8 hours. The sahd was then filtered with hot (960C) distilled water several times until no foaming existed and dried in an oven.
Wetting Test
Several grains were placed in a bottle and sea water solutions of the compounds (pH 6.5) added.
The sand was contacted with a drop of Forties Oil injected from a micrometer syringe and the oil wetting behaviour of the sand in the aqueous environment was observed and recorded.
The qualitative results were ranged according to the scale:
1 = Grains not attached to the oil drop
2 = Grains very weakly attached -- easily removed by shaking
3 = Grains moderately attached -- less easily removed by shaking
4 = Grains strongly attached -- removed by shaking with difficulty
5 = Grains attached and not removed by shaking
For comparison the wetting test was repeated but in the absence of the compounds employing the sea water, sand and oil only.
The results were as follows:
Anionic surfactant Wetting by oil Compound A 1 Compound B 1 Compound C 3 No surface-active 5 compound These results demonstrate that in the absence of the compounds the sand grains which are normally water wettable quickly take on an oil wet character, but in the presence of compounds according to the present invention the surface of the sand can retain its water wettabiiity in the presence of the crude oil. Also demonstrated is that the compound with the polyethyleneoxy chain between its propane sulphonate groups (compound C) is marginally less effective than the polysaccharide derived compounds.
EXAMPLE 2
The adsorption of the surfactant dinonylphenol (C2H40)7(CH2)3SO3E'2Nae (a typical surfactant used in enhanced oil recovery) on Forties sand (50 to 150,um fraction) was determined at 960C both in the absence of, and in the presence of, the compound: 03e5 (CH2)3O-(C2H40)4(CH2)3SQe2Na@ (Compound C). The method employed was the standard batch method of adsorption measurement from filtered seawater using ultra violet absorbance to determine surfactant concentration changes.
The results were:
Adsorption (mg/g System 0.39 2000 ppm of the dinonylphenol (C2H40)7(CH2)3SO3~Na+ 0.25 ditto but with 500 ppm of compound C These results show that compound C reduces the adsorption of the surfactant on the sand.
Claims (8)
1. A composition suitable for modifying the wettability of an underground formation which comprises an aqueous saline solution or dispersion of a surface active compound which contains in its molecule a hydrophilic group attached via hydrocarbon groups to at least two sulphonate groups.
2. A composition as claimed in claim 1 wherein the hydrophilic group is an oxyalky.lene chain with from 3 to 30 oxyalkylene units or a polysaccharide.
3. A composition as claimed in claim 1 also containing an additional anionic or non ionic surface active compound of the type used in enhanced oil recovery.
4. A composition as claimed in claim 3 wherein the ratio of the concentration of the first mentioned compound to the second compound is in the range 1:25 to 1:2.
5. A method of treating a formation to either maintain its water wettability in the presence of crude oil or modify same to a water wettable condition in the presence of crude oil comprising contacting the formation with an effective amount of a composition as claimed in any of claims 1 to 4.
6. A method as claimed in claim 5 wherein an additional anionic or non-ionic surface active compound of the type used in enhanced oil recovery is also included in the composition.
7. A method as claimed in claim 6 wherein the ratio of the concentration of the first mentioned compound to the second compound is in the range 1:25 to 1:2.
8. A method as claimed in claim 5 which comprises subsequently contacting the formation with an anionic or non ionic surface active compound of the type used in enhanced oil recovery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08322744A GB2127462B (en) | 1982-09-01 | 1983-08-24 | Compositions suitable for modifying wettability and their use |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8224935 | 1982-09-01 | ||
| GB08322744A GB2127462B (en) | 1982-09-01 | 1983-08-24 | Compositions suitable for modifying wettability and their use |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8322744D0 GB8322744D0 (en) | 1983-09-28 |
| GB2127462A true GB2127462A (en) | 1984-04-11 |
| GB2127462B GB2127462B (en) | 1986-02-19 |
Family
ID=26283706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08322744A Expired GB2127462B (en) | 1982-09-01 | 1983-08-24 | Compositions suitable for modifying wettability and their use |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2127462B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2378717A (en) * | 2001-08-13 | 2003-02-19 | Intevep Sa | Water-based fluid for altering the wettability of a formation |
| WO2007017806A2 (en) * | 2005-08-05 | 2007-02-15 | Schlumberger Canada Limited | Prevention of water and condensate blocks in wells |
| US8716198B2 (en) | 2008-05-09 | 2014-05-06 | E I Du Pont De Nemours And Company | Prevention and remediation of water and condensate blocks in wells |
| CN112292403A (en) * | 2018-06-20 | 2021-01-29 | 宝洁公司 | Product comprising polysaccharide derivative |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1463659A (en) * | 1973-06-01 | 1977-02-02 | Agfa Gevaert | Development of exposed silver halide material in the presence of polyoxyalkylenes |
| GB1489808A (en) * | 1974-05-30 | 1977-10-26 | Montedison Spa | Sulphonic derivatives of polyoxapolyfluoroalkanes |
| GB1579167A (en) * | 1976-06-01 | 1980-11-12 | Ethyl Corp | Use of alkyl glycidyl ether sulphonates in the recovery of oil from oil-bearing formations |
| EP0032072A1 (en) * | 1979-12-03 | 1981-07-15 | The Dow Chemical Company | Surfactant compositions useful in enhanced oil recovery processes |
-
1983
- 1983-08-24 GB GB08322744A patent/GB2127462B/en not_active Expired
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1463659A (en) * | 1973-06-01 | 1977-02-02 | Agfa Gevaert | Development of exposed silver halide material in the presence of polyoxyalkylenes |
| GB1489808A (en) * | 1974-05-30 | 1977-10-26 | Montedison Spa | Sulphonic derivatives of polyoxapolyfluoroalkanes |
| GB1579167A (en) * | 1976-06-01 | 1980-11-12 | Ethyl Corp | Use of alkyl glycidyl ether sulphonates in the recovery of oil from oil-bearing formations |
| EP0032072A1 (en) * | 1979-12-03 | 1981-07-15 | The Dow Chemical Company | Surfactant compositions useful in enhanced oil recovery processes |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2378717A (en) * | 2001-08-13 | 2003-02-19 | Intevep Sa | Water-based fluid for altering the wettability of a formation |
| US6579572B2 (en) | 2001-08-13 | 2003-06-17 | Intevep, S.A. | Water-based system for altering wettability of porous media |
| GB2378717B (en) * | 2001-08-13 | 2003-07-16 | Intevep Sa | Water-based system for altering wettability of porous media |
| WO2007017806A2 (en) * | 2005-08-05 | 2007-02-15 | Schlumberger Canada Limited | Prevention of water and condensate blocks in wells |
| WO2007017806A3 (en) * | 2005-08-05 | 2007-06-21 | Schlumberger Ca Ltd | Prevention of water and condensate blocks in wells |
| US8716198B2 (en) | 2008-05-09 | 2014-05-06 | E I Du Pont De Nemours And Company | Prevention and remediation of water and condensate blocks in wells |
| CN112292403A (en) * | 2018-06-20 | 2021-01-29 | 宝洁公司 | Product comprising polysaccharide derivative |
| US11708542B2 (en) | 2018-06-20 | 2023-07-25 | The Procter & Gamble Company | Product comprising polysaccharide derivatives |
| CN112292403B (en) * | 2018-06-20 | 2023-08-22 | 宝洁公司 | Products comprising polysaccharide derivatives |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2127462B (en) | 1986-02-19 |
| GB8322744D0 (en) | 1983-09-28 |
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