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).
대표청구항▼
1. A method of converting an unrefined petroleum acid into a surfactant, the method comprising: (i) contacting a petroleum material with an aqueous composition comprising water, an anionic surfactant, an alkali agent, and a co-solvent having the formula wherein R1 is independently hydrogen or unsub
1. A method of converting an unrefined petroleum acid into a surfactant, the method comprising: (i) contacting a petroleum material with 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, thereby forming an emulsion in contact with the petroleum material;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, wherein the aqueous composition has a salinity of at least 5,000 ppm and a pH of from 9.5 to 12, and wherein the anionic surfactant consists essentially of one or more anionic surfactants that are not alcohol phosphate surfactants or phosphate alkyl ester surfactants, and(ii) allowing the unrefined petroleum acid within an unrefined petroleum material to enter into the emulsion, thereby converting the unrefined petroleum acid into the surfactant. 2. The method of claim 1, wherein the emulsion is a microemulsion. 3. The method of claim 1, wherein the unrefined petroleum material is in a petroleum reservoir. 4. The method of claim 3, wherein the unrefined petroleum material is in contact with a solid material. 5. The method of claim 4, further comprising allowing the unrefined petroleum material to separate from the solid material thereby displacing the unrefined petroleum material in contact with the solid material. 6. The method of claim 5, further comprising recovering the unrefined petroleum material from the petroleum reservoir. 7. The method of claim 6, wherein the method is an enhanced oil recovery method. 8. The method of claim 1, wherein R1 is unsubstituted C1-C4 alkyl. 9. The method of claim 1, wherein R1 is hydrogen. 10. The method of claim 1, wherein R2 is hydrogen. 11. The method of claim 1, wherein n is an integer from 1 to 10. 12. The method of claim 1, wherein R1 is hydrogen and n is 6. 13. The method 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. 14. The method of claim 13, wherein R1 is hydrogen, o is O and p is 6. 15. The method of claim 1, wherein-the alkali agent is NaOH, KOH, LiOH, Na2CO3, NaHCO3, Na-metaborate, Na silicate, Na orthosilicate or NH4OH. 16. The method of claim 1, wherein the anionic surfactant includes an alkoxy sulfate surfactant. 17. The method of claim 1, wherein the water is hard brine. 18. The method of claim 1, wherein the aqueous composition has a salinity of at least 50,000 ppm. 19. The method of claim 1, wherein the aqueous composition has a pH of from 9.5 to 12. 20. The method of claim 1, wherein the anionic surfactant includes an alkoxy carboxylate surfactant, an olefin sulfonate surfactant, an alkyl benzene sulfonate surfactant, an alkyl sulfonate surfactant, an aryl sulfonate surfactant, and combinations thereof. 21. The method of claim 1, wherein the anionic surfactant does not include an alcohol phosphate surfactant or phosphate alkyl ester surfactants.
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이 특허에 인용된 특허 (14)
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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