[특허]Method and composition for enhanced hydrocarbons recovery

[미국특허] Method and composition for enhanced hydrocarbons recovery 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E21B-043/22 E21B-043/16
출원번호	US-0385578 (2003-03-11)
발명자 / 주소	Shpakoff,Paul Gregory Raney,Kirk Herbert
출원인 / 주소	Shell Oil Company
인용정보	피인용 횟수 : 110 인용 특허 : 29

초록 ▼

A method of treating a hydrocarbon containing formation is described. The method may include providing a hydrocarbon recovery composition to the hydrocarbon containing formation. Hydrocarbons in the hydrocarbon containing formation may interact with the hydrocarbon recovery composition. The hydrocarbon recovery composition may include an aliphatic anionic surfactant and an aliphatic nonionic additive. In some embodiments, an aliphatic anionic surfactant may be branched. In other embodiments, an aliphatic nonionic additive may be branched.

대표청구항 ▼

What is claimed is: 1. A method of treating a hydrocarbon containing formation, comprising: a) providing a composition to at least a portion of the hydrocarbon containing formation, wherein the composition comprises a branched aliphatic anionic surfactant and a branched aliphatic nonionic additive, wherein the branched aliphatic group of the anionic surfactant comprises an average number of branches per aliphatic group ranging from about 0.7 to about 2.5; and b) allowing the composition to interact with hydrocarbons in the hydrocarbon containing formation. 2. The method of claim 1 wherein the branched aliphatic group of the nonionic additive comprises an average number of branches per aliphatic group ranging from about 0.7 to about 2.5. 3. The method of claim 1 wherein greater than about 50 percent of the branches of the branched aliphatic anionic surfactant are methyl groups. 4. The method of claim 1 wherein less than about 10 percent of the branches of the branched aliphatic anionic surfactant are ethyl groups. 5. The method of claim 1 wherein less than about 0.5 percent of the branches of the branched aliphatic anionic surfactant are neither ethyl nor methyl groups. 6. The method of claim 1 wherein greater than about 50 percent of the branches of the branched aliphatic anionic surfactant are methyl groups and wherein greater than about 50 percent of the branches of the branched aliphatic nonionic additive are methyl groups. 7. The method of claim 1 wherein the branched aliphatic anionic surfactant has an average carbon number from 10 to 24. 8. The method of claim 7 wherein the branched aliphatic anionic surfactant has an average carbon number from 12 to 18. 9. The method of claim 1 wherein the composition comprises greater than about 40 wt. % of the branched aliphatic anionic surfactant. 10. The method of claim 9 wherein the composition comprises from about 60 to about 90 wt. % of the branched aliphatic anionic surfactant. 11. The method of claim 1 wherein the composition comprises less than about 60 wt. % of the branched aliphatic nonionic additive. 12. The method of claim 11 wherein the composition comprises from about 10 to about 40 wt. % of the branched aliphatic nonionic additive. 13. The method of claim 1 wherein the branched aliphatic nonionic additive is an alcohol. 14. The method of claim 1 wherein the branched aliphatic nonionic additive is a sugar based surfactant. 15. The method of claim 1 wherein the branched aliphatic anionic surfactant is a sulfate. 16. The method of claim 1 wherein the aliphatic portion of the aliphatic nonionic additive has an identical chemical structure as the aliphatic portion of the branched aliphatic anionic surfactant. 17. The method of claim 1 wherein providing the composition to at least a portion of the hydrocarbon containing formation comprises combining at least a portion of the hydrocarbon recovery composition with at least a portion of a hydrocarbon removal fluid to produce an injectable fluid; wherein the amount of the hydrocarbon recovery composition is less than about 0.5 wt. % based on the weight of the injectable fluid. 18. The method of claim 1 wherein the hydrocarbon containing formation comprises an average permeability thickness product of less than about 1000 millidarcy feet. 19. The method of claim 1 wherein the hydrocarbon containing formation is at an average temperature of less than 50째 C. 20. The method of claim 1 wherein at least a portion of the hydrocarbon containing formation is oil wet. 21. The method of claim 1 wherein at least a portion of the hydrocarbon containing formation is less than 1000 feet below the earth's surface. 22. The method of claim 1 further comprising waterflooding at least a portion of the hydrocarbon containing formation. 23. The method of claim 1 further comprising: waterflooding at least a portion of the hydrocarbon containing formation before providing the composition to the hydrocarbon containing formation; and allowing the composition to interact with the water and hydrocarbons. 24. The method of claim 1 further comprising: waterflooding at least a portion of the hydrocarbon containing formation before providing the composition to the hydrocarbon containing formation; and allowing the composition to interact with at least a portion of the water and at least a portion of the hydrocarbons, wherein the interaction reduces at least a portion of the interfacial tension between the water and at least a portion of the hydrocarbons to a value less than about 0.1 dyne/cm. 25. The method of claim 1 wherein at least a portion of the hydrocarbon containing formation comprises water and wherein a salinity value for the water is less than about 13,000 ppm. 26. The method of claim 1 further comprising providing a hydrocarbon removal fluid to at least a portion of the hydrocarbon containing formation and allowing the hydrocarbon removal fluid to mobilize at least a portion of the hydrocarbons toward a production well. 27. The method of claim 1 further comprising providing a polymer to at least a portion of the hydrocarbon containing formation. 28. The method of claim 1 wherein the aliphatic group of the branched aliphatic anionic surfactant has less than about 0.5 percent aliphatic quaternary carbon atoms. 29. The method of claim 28 wherein the aliphatic group of the branched aliphatic nonionic additive has less than about 0.5 percent aliphatic quaternary carbon atoms. 30. The method of claim 29 wherein the aliphatic portion of the branched aliphatic nonionic additive has an identical chemical structure as the aliphatic portion of the branched aliphatic anionic surfactant. 31. The method of claim 30 wherein providing the composition to at least a portion of the hydrocarbon containing formation comprises combining at least a portion of the hydrocarbon recovery composition with at least a portion of a hydrocarbon removal fluid to produce an injectable fluid; wherein the amount of the hydrocarbon recovery composition is less than about 0.5 wt. % based on the weight of the injectable fluid. 32. A method of treating a hydrocarbon containing formation comprising: (a) providing a composition to at least a portion of the hydrocarbon containing formation, wherein the composition comprises a branched aliphatic anionic surfactant and a branched aliphatic nonionic additive, wherein the branched aliphatic group of the branched aliphatic nonionic additive comprises an average number of branches per aliphatic group ranges from about 0.7 to about 2.5; and b) allowing the composition to interact with hydrocarbons in the hydrocarbon containing formation. 33. The method of claim 32 wherein the branched aliphatic group of the branched anionic surfactant comprises an average number of branches per aliphatic group ranging from about 0.7 to about 2.5. 34. The method of claim 32 wherein greater than about 50 percent of the branches of the branched aliphatic nonionic additive are methyl groups. 35. The method of claim 32 wherein less than about 10 percent of the branches of the branched aliphatic nonionic additive are ethyl groups. 36. The method of claim 32 wherein less than about 0.5 percent of the branches of the branched aliphatic nonionic additive are neither ethyl nor methyl groups. 37. The method of claim 32 wherein greater than about 50 percent of the branches of the aliphatic anionic surfactant are methyl groups; and wherein greater than about 50 percent of the branches of the branched aliphatic nonionic additive are methyl groups. 38. The method of claim 32 wherein the branched aliphatic nonionic additive has an average carbon number of from 10 to 24. 39. The method of claim 38 wherein the branched aliphatic nonionic additive has an average carbon number from 12 to 18. 40. The method of claim 32 wherein the composition comprises greater than about 40 wt. % of the branched aliphatic anionic surfactant. 41. The method of claim 40 wherein the composition comprises from about 60 to about 90 wt. % of the branched aliphatic anionic surfactant. 42. The method of claim 32 wherein the composition comprises less than about 60 wt. % of the branched aliphatic nonionic additive. 43. The method of claim 42 wherein the composition comprises from about 10 to about 40 wt. % of the branched aliphatic nonionic additive. 44. The method of claim 32 wherein the branched aliphatic nonionic additive is an alcohol. 45. The method of claim 32 wherein the branched aliphatic nonionic additive is a sugar based surfactant. 46. The method of claim 32 wherein the branched aliphatic anionic surfactant is a sulfate. 47. The method of claim 32 wherein the aliphatic portion of the branched aliphatic nonionic additive has an identical chemical structure as the aliphatic portion of the branched aliphatic nonionic surfactant. 48. The method of claim 32 wherein providing the composition to at least a portion of the hydrocarbon containing formation comprises combining at least a portion of the hydrocarbon recovery composition with at least a portion of a hydrocarbon removal fluid to produce an injectable fluid; wherein the amount of the hydrocarbon recovery composition is less than about 0.5 wt. % based on the weight of the injectable fluid. 49. The method of claim 32 wherein the hydrocarbon containing formation comprises an average permeability thickness product of less than about 1000 millidarcy feet. 50. The method of claim 32 wherein the hydrocarbon containing formation is at an average temperature of less than 50째 C. 51. The method of claim 32 wherein at least a portion of the hydrocarbon containing formation is oil wet. 52. The method of claim 32 wherein at least a portion of the hydrocarbon containing formation is less than 1000 feet below the earth's surface. 53. The method of claim 32 further comprising waterflooding at least a portion of the hydrocarbon containing formation. 54. The method of claim 32 further comprising: waterflooding at least a portion of the hydrocarbon containing formation before providing the composition to the hydrocarbon containing formation; and allowing the composition to interact with the water and hydrocarbons. 55. The method of claim 32 further comprising: waterflooding at least a portion of the hydrocarbon containing formation before providing the composition to the hydrocarbon containing formation; and allowing the composition to interact with at least a portion of the water and at least a portion of the hydrocarbons, wherein the interaction reduces at least a portion of the interfacial tension between the water and at least a portion of the hydrocarbons to a value less than about 0.1 dyne/cm. 56. The method of claim 32 wherein at least a portion of the hydrocarbon containing formation comprises water and wherein a salinity value for the water is less than about 13,000 ppm. 57. The method of claim 32 further comprising providing a hydrocarbon removal fluid to at least a portion of the hydrocarbon containing formation and allowing the hydrocarbon removal fluid to mobilize at least a portion of the hydrocarbons toward a production well. 58. The method of claim 32 further comprising providing a polymer to at least a portion of the hydrocarbon containing formation.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Method and composition for enhanced hydrocarbons recovery 원문보기

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