Provided herein are, inter alia, compositions including a surfactant and a phenol-alkoxylate co-solvent useful in enhanced oil recovery. The compositions and methods provided herein are particularly useful for oil recovery under a broad range of reservoir conditions (e.g. high to low temperatures, h
Provided herein are, inter alia, compositions including a surfactant and a phenol-alkoxylate co-solvent useful in enhanced oil recovery. The compositions and methods provided herein are particularly useful for oil recovery under a broad range of reservoir conditions (e.g. high to low temperatures, high to low salinity, highly viscous oils).
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1. An aqueous composition comprising water, an anionic surfactant, an alkali agent, and a co-solvent having the formula: wherein R1 is independently hydrogen or unsubstituted C1-C4 alkyl;R2 is independently hydrogen or unsubstituted C1-C2 alkyl; andn is an integer from 1 to 30,wherein the aqueous co
1. An aqueous composition comprising water, an anionic surfactant, an alkali agent, and a co-solvent having the formula: wherein R1 is independently hydrogen or unsubstituted C1-C4 alkyl;R2 is independently hydrogen or unsubstituted C1-C2 alkyl; andn is an integer from 1 to 30,wherein the aqueous composition has a salinity of at least 5,000 ppm and a pH of from 9.5 to 12,wherein the co-solvent is present in an amount of from 0.25% to 3% by weight, based on the weight of the aqueous composition, andwherein the anionic surfactant consists essentially of one or more anionic surfactants that are not alcohol phosphate surfactants or phosphate alkyl ester surfactants. 2. The aqueous composition of claim 1, wherein R1 is unsubstituted C2-C4 alkyl. 3. The aqueous composition of claim 1, wherein R1 is hydrogen. 4. The aqueous composition of claim 1, wherein R2 is hydrogen. 5. The aqueous composition of claim 1, wherein n is an integer from 1 to 10. 6. The aqueous composition of claim 1, wherein R1 is hydrogen and n is 6. 7. The aqueous composition of claim 1, wherein the co-solvent has the formula: wherein R1 is independently hydrogen or unsubstituted C1-C4 alkyl;R2 is methyl or ethyl;o is an integer from 0 to 15; andp is an integer from 1 to 10. 8. The aqueous composition of claim 7, wherein R1 is hydrogen, o is O and p is 6. 9. The aqueous composition of claim 1, further comprising a viscosity enhancing water soluble polymer. 10. The aqueous composition of claim 1, wherein-the alkali agent is NaOH, KOH, LiOH, Na2CO3, NaHCO3, Na-metaborate, Na silicate, Na orthosilicate or NH4OH. 11. An emulsion composition comprising an unrefined petroleum phase and an aqueous phase, wherein the aqueous phase comprises water, an anionic surfactant, an alkali agent, and a co-solvent having the formula: wherein R1 is independently hydrogen or unsubstituted C1-C4 alkyl;R2 is independently hydrogen or unsubstituted C1-C2 alkyl; andn is an integer from 1 to 30,wherein the emulsion composition has a salinity of at least 5,000 ppm and a pH of from 9.5 to 12,wherein the anionic surfactant is present in an amount of 5% by weight or less, based on the weight of the emulsion composition and the co-solvent is present in an amount of from 0.25% to 3% by weight, based on the weight of the emulsion composition, andwherein the anionic surfactant consists essentially of one or more anionic surfactants that are not alcohol phosphate surfactants or phosphate alkyl ester surfactants. 12. The emulsion composition of claim 11, wherein the co-solvent has the formula: wherein R1 is independently hydrogen or unsubstituted C1-C4 alkyl;R2 is methyl or ethyl;o is an integer from 0 to 15; andp is an integer from 1 to 10. 13. The emulsion composition of claim 11, wherein the unrefined petroleum phase comprises a nonactive oil. 14. A method of displacing an unrefined petroleum material in contact with a solid material, the method comprising: (i) contacting the unrefined petroleum material with the aqueous composition of claim 1, wherein the unrefined petroleum material is in contact with a solid material;(ii) allowing the unrefined petroleum material to separate from the solid material thereby displacing the unrefined petroleum material in contact with the solid material. 15. The method of claim 14, further comprising contacting the solid material with the aqueous composition. 16. The method of claim 14, wherein the method is an enhanced oil recovery method. 17. The method of claim 14, wherein an emulsion forms after the contacting. 18. The method of claim 14, wherein the unrefined petroleum material is a nonactive oil. 19. The aqueous composition of claim 1 or 7, wherein the aqueous composition forms part of an emulsion. 20. The aqueous composition of claim 19, wherein the emulsion comprises an unrefined petroleum phase. 21. The aqueous composition of claim 20, wherein the unrefined petroleum phase comprises a nonactive oil. 22. The aqueous composition of claim 1, wherein the aqueous composition has a salinity of at least 50,000 ppm. 23. The aqueous composition of claim 1, wherein the water is brine. 24. An emulsion composition comprising an unrefined petroleum phase and the aqueous phase of claim 1. 25. The emulsion composition of claim 11, wherein the emulsion is a microemulsion. 26. The emulsion composition of claim 11, wherein the viscosity of the emulsion composition is less than 200 centipoise. 27. The aqueous composition of claim 1, having a pH of from 10 to 12. 28. The aqueous composition of claim 1, having a pH of from 9.5 to 11. 29. The aqueous composition of claim 1, wherein the water is hard water. 30. The aqueous composition of claim 1, wherein the anionic surfactant includes an alkoxy sulfate surfactant. 31. The emulsion composition of claim 11, having a pH of from 10 to 12. 32. The emulsion composition of claim 11, having a pH of from 9.5 to 11. 33. The emulsion composition of claim 11, wherein the water is hard water. 34. The emulsion composition of claim 11, wherein the anionic surfactant includes an alkoxy sulfate surfactant. 35. The aqueous composition of claim 1, wherein the anionic surfactant is selected from an alkoxy carboxylate surfactant, an olefin sulfonate surfactant, an alkyl benzene sulfonate surfactant, an alkyl sulfonate surfactant, an aryl sulfonate surfactant, and combinations thereof. 36. The aqueous composition of claim 1, wherein the aqueous composition does not include an alcohol phosphate surfactant. 37. The emulsion composition of claim 11, wherein the anionic surfactant is selected from an alkoxy carboxylate surfactant, an olefin sulfonate surfactant, an alkyl benzene sulfonate surfactant, an alkyl sulfonate surfactant, an aryl sulfonate surfactant, and combinations thereof. 38. The emulsion composition of claim 11, wherein the emulsion composition does not include an alcohol phosphate surfactant or a phosphate alkyl ester surfactant.
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이 특허에 인용된 특허 (12)
Higgins William A. (Gates Mills OH), Aqueous systems containing amino sulfonic acid derivatives of carboxylic acids.
Maddox ; Jr. Jim (Houston TX) Schievelbein Vernon H. (Houston TX), Method of extracting and reutilizing surfactants from emulsions using sulfonated alkyl benzenes and ethoxylated phenols.
Gale Walter W. (Houston TX) Puerto Maura C. (Houston TX) Ashcraft Thomas L. (Baytown TX) Saunders Rhoderick K. (Sinton TX) Reed Ronald L. (Houston TX), Propoxylated ethoxylated surfactants and method of recovering oil therewith.
Watkins David R. (Irvine CA) O\Donnell Edward J. (Huntington Beach CA), Self-breaking foamed oil in water emulsion for stimulation of wells blocked by paraffinic deposits.
Watkins David R. (Irvine CA) O\Donnell Edward J. (Huntington Beach CA), Self-breaking foamed oil-in-water emulsion for stimulation of wells blocked by paraffinic deposits.
Debons Francis E. (Richmond TX) Pedersen Larry D. (Pinckney MI) Whittington Lawrence E. (Katy TX), Use of lignin/amine/surfactant blends in enhanced oil recovery.
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