Methods and compositions for reducing the production of water and stimulating hydrocarbon production from a subterranean formation
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C09K-008/588
C09K-008/58
C09K-008/88
C09K-008/60
C09K-008/90
출원번호
UP-0471148
(2006-06-20)
등록번호
US-7589048
(2009-09-24)
발명자
/ 주소
Eoff, Larry S.
Dalrymple, Eldon D.
Reddy, B. Raghava
출원인 / 주소
Halliburton Energy Services, Inc.
대리인 / 주소
Kent, Robert A.
인용정보
피인용 횟수 :
19인용 특허 :
172
초록▼
The present invention relates to subterranean treatment fluids, and more particularly, the present invention relates to subterranean treatment fluids comprising relative permeability modifiers and methods for using such subterranean treatment fluids in subterranean operations to reduce the productio
The present invention relates to subterranean treatment fluids, and more particularly, the present invention relates to subterranean treatment fluids comprising relative permeability modifiers and methods for using such subterranean treatment fluids in subterranean operations to reduce the production of water from and stimulate hydrocarbon production in a subterranean formation. In certain embodiments, the methods of the present invention generally comprise the steps of providing a permeability-modifying aqueous treatment fluid comprising a relative permeability modifier and contacting a subterranean formation with the permeability-modifying aqueous treatment fluid. Optionally, the permeability-modifying aqueous treatment fluid may be injected in the subterranean formation at a pressure sufficient to create or enhance at least one fracture therein. In another embodiment, the relative permeability modifier may be provided by appropriate reaction in situ.
대표청구항▼
What is claimed is: 1. A method for fracturing a subterranean formation comprising: providing a permeability-modifying aqueous treatment fluid comprising: a hydrophobically modified water-soluble polymer that has a molecular weight in the range of about 100,000 to about 10,000,000 once synthesized
What is claimed is: 1. A method for fracturing a subterranean formation comprising: providing a permeability-modifying aqueous treatment fluid comprising: a hydrophobically modified water-soluble polymer that has a molecular weight in the range of about 100,000 to about 10,000,000 once synthesized and comprises a polymer backbone and a hydrophobic branch, the polymer backbone comprising polar heteroatoms, the hydrophobic branch comprising an organic acid derivative selected from the group consisting of: an anhydride of octenyl succinic acid, an ester of octenyl succinic acid, an amide of octenyl succinic acid, an anhydride of dodecenyl succinic acid, an ester of dodecenyl succinic acid, and an amide of dodecenyl succinic acid; and placing the permeability-modifying aqueous treatment fluid into the subterranean formation at a pressure sufficient to create or enhance at least one fracture therein, wherein the hydrophobically modified water-soluble polymer reduces the permeability of the subterranean formation to aqueous-based fluids. 2. The method of claim 1 wherein the permeability-modifying aqueous treatment fluid further comprises an aqueous-based fluid. 3. The method of claim 1 wherein the polar heteroatoms present within the polymer backbone of the hydrophobically modified water-soluble polymer comprise at least one heteroatom selected from the group consisting of: oxygen, nitrogen, sulfur, and phosphorous. 4. The method of claim 1 wherein the hydrophobically modified water-soluble polymer is present in the permeability-modifying aqueous treatment fluid in an amount in the range of about 0.02% to about 10% by weight of the permeability-modifying aqueous treatment fluid. 5. The method of claim 1 wherein the hydrophobically modified water-soluble polymer is a reaction product of a hydrophilic polymer that comprises a polymer backbone comprising polar heteroatoms and a hydrophobic compound. 6. The method of claim 5 wherein the hydrophilic polymer comprises at least one polymer selected from the group consisting of: a cellulose, a polyamide, a polyetheramine, a polyhydroxyetheramine, a polysulfone, and a starch. 7. The method of claim 6 wherein the at least one polymer comprises the starch, wherein the starch comprises a cationic starch. 8. The method of claim 5 wherein the hydrophobic compound has an alkyl chain length of about 4 to about 22 carbons. 9. The method of claim 1 wherein the aqueous treatment fluid further comprises at least one gelling agent selected from the group consisting of: a gelling agent and a crosslinked gelling agent. 10. The method of claim 9 wherein the gelling agent comprises a galactomannan gelling agent. 11. The method of claim 9 wherein the aqueous treatment fluid further comprises proppant. 12. The method of claim 1 further comprising injecting a fracture stimulation fluid into the subterranean formation at a pressure sufficient to create or enhance at least one fracture therein prior to placing the permeability-modifying aqueous treatment fluid into the subterranean formation. 13. The method of claim 1 further comprising injecting a fracture stimulation fluid into the subterranean formation at a pressure sufficient to create or enhance at least one fracture therein after placing the permeability-modifying aqueous treatment fluid into the subterranean formation. 14. A method for fracturing a subterranean formation comprising: providing a permeability-modifying aqueous treatment fluid comprising: a hydrophilic polymer that comprises a polymer backbone comprising polar heteroatoms; a hydrophobic compound capable of reacting with the hydrophilic polymer, the hydrophobic compound comprising an alkyl chain of from about 4 to about 22 carbons; and a surfactant; and placing the permeability-modifying aqueous treatment fluid into the subterranean formation at a pressure sufficient to create or enhance at least one fracture therein; wherein the hydrophilic polymer and the hydrophobic compound react in situ to form a hydrophobically modified water-soluble polymer that has a molecular weight in the range of about 100,000 to about 10,000,000 once synthesized, the hydrophobically modified water-soluble polymer comprising a polymer backbone and a hydrophobic branch, the polymer backbone comprising polar heteroatoms, the hydrophobic branch comprising an organic acid derivative selected from the group consisting of: an anhydride of octenyl succinic acid, an ester of octenyl succinic acid, an amide of octenyl succinic acid, an anhydride of dodecenyl succinic acid, an ester of dodecenyl succinic acid, and an amide of dodecenyl succinic acid; the hydrophobic branch comprising an alkyl chain of about 4 to about 22 carbons without any intervening heteroatoms; and wherein the hydrophobically modified water-soluble polymer reduces the permeability of the subterranean formation to aqueous-based fluids. 15. The method of claim 14 wherein the permeability-modifying aqueous treatment fluid further comprises an aqueous-based fluid. 16. The method of claim 14 wherein the hydrophilic polymer comprises a least one polymer selected from the group consisting of: a cellulose, a polyamide, a polyetheramine, a polyhydroxyetheramine, a polysulfone, and a starch. 17. The method of claim 14 wherein the polar heteroatoms present within the polymer backbone of the hydrophilic polymer comprise at least one heteroatom selected from the group consisting of: oxygen, nitrogen, sulfur, and phosphorous. 18. The method of claim 14 wherein the hydrophilic polymer is present in the permeability-modifying aqueous treatment fluid in an amount in the range of about 0.1% to about 10% by weight of the permeability-modifying aqueous treatment fluid. 19. The method of claim 14 wherein the hydrophobic compound is present in the permeability-modifying aqueous treatment fluid in an amount in the range of about 0.01% to about 5% by weight of the permeability-modifying aqueous treatment fluid. 20. The method of claim 14 wherein the surfactant comprises at least one surfactant selected from the group consisting of: an anionic surfactant, a cationic surfactant, an amphoteric surfactant, and a neutral surfactant. 21. The method of claim 14 wherein the permeability-modifying aqueous treatment fluid further comprises at least one gelling agent selected from the group consisting of: a gelling agent and a crosslinked gelling agent. 22. The method of claim 21 wherein the permeability-modifying aqueous treatment fluid further comprises a proppant. 23. The method of claim 14 wherein the permeability-modifying aqueous treatment fluid further comprises a pH-adjusting agent that adjusts the pH to at least about 8. 24. The method of claim 14 further comprising injecting a fracture stimulation fluid into the subterranean formation at a pressure sufficient to create or enhance at least one fracture therein prior to placing the permeability-modifying aqueous treatment fluid into the subterranean formation. 25. The method of claim 14 further comprising injecting a fracture stimulation fluid into the subterranean formation at a pressure sufficient to create or enhance at least one fracture therein after placing the permeability-modifying aqueous treatment fluid into the subterranean formation. 26. The method of claim 14 further comprising shutting the well bore for a period of about 1 minute to about 24 hours after injection of the permeability-modifying aqueous treatment fluid. 27. The method of claim 1 wherein the polar heteroatoms present within the polymer backbone of the hydrophobically modified water-soluble polymer comprise at least one heteroatom selected from the group consisting of: oxygen, sulfur, and phosphorous. 28. The method of claim 14 wherein the polar heteroatoms present within the polymer backbone of the hydrophobically modified water-soluble polymer comprise at least one heteroatom selected from the group consisting of: oxygen, sulfur, and phosphorous. 29. A method for fracturing a subterranean formation comprising: introducing an aqueous treatment fluid into a subterranean formation at a pressure sufficient to create or enhance at least one fracture therein, wherein the aqueous treatment fluid comprises a hydrophobically modified water-soluble polymer that has a molecular weight in the range of about 100,000 to about 10,000,000 once synthesized and comprises a polymer backbone and a hydrophobic branch, wherein the polymer backbone comprises at least one polar heteroatom selected from the group consisting of oxygen, sulfur, and phosphorous, wherein the hydrophobic branch comprises an organic acid derivative selected from the group consisting of: an anhydride of octenyl succinic acid, an ester of octenyl succinic acid, an amide of octenyl succinic acid, an anhydride of dodecenyl succinic acid, an ester of dodecenyl succinic acid, and an amide of dodecenyl succinic acid, and wherein the hydrophobically modified water-soluble polymer reduces the permeability of the subterranean formation to aqueous-based fluids. 30. The method of claim 29 wherein the hydrophobically modified water-soluble polymer is a reaction product of a hydrophilic polymer that comprises a polymer backbone comprising polar heteroatoms and a hydrophobic compound. 31. The method of claim 30 wherein the hydrophilic polymer comprises at least one polymer selected from the group consisting of: a cellulose, a polyetheramine, a polyhydroxyetheramine, a polysulfone, and a starch. 32. The method of claim 31 wherein the hydrophilic polymer comprises the starch, wherein the starch comprises a cationic starch.
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