[특허]Foamed treatment fluids and associated methods

Halliburton Energy Services, Inc.

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Foamed treatment fluids and associated methods

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E21B-043/26 E21B-043/25
미국특허분류(USC)	166/308.6; 166/300; 166/309
출원번호	US-0355059 (2006-02-15)
발명자 / 주소	Chatterji,Jiten King,Karen L. King,Bobby J. Heath,Stanley J. Brennels,Chad
출원인 / 주소	Halliburton Energy Services, Inc.
대리인 / 주소	Fletcher Yoder
인용정보	피인용 횟수 : 15 인용 특허 : 6

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Foamed treatment fluids comprising water, a gas, and a foaming and foam stabilizing surfactant mixture comprising an alkali salt of an alkyl ether sulfate, wherein the alkali salt of the alkyl ether sulfate comprises an alkali salt of a C6-10 alkyl ether sulfate, and an alkali salt of a C4 alkyl ether sulfate, an alkyl amidopropyl amphoteric surfactant selected from the group consisting of an alkyl amidopropyl hydroxysultaine, an alkyl amidopropyl betaine, and combinations thereof, and an alkyl amidopropyl dimethylamine oxide. Methods comprising providi...

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What is claimed is: 1. A method of treating a subterranean formation comprising: providing a foamed treatment fluid comprising: water, a gas, and a foaming and foam stabilizing surfactant mixture comprising: an alkali salt of an alkyl ether sulfate, wherein the alkali salt of the alkyl ether sulfate comprises an alkali salt of a C6-10 alkyl ether sulfate, and an alkali salt of a C4 alkyl ether sulfate, an alkyl amidopropyl amphoteric surfactant selected from the group consisting of an alkyl amidopropyl hydroxysultaine, an alkyl amidopropyl betaine, and combinations thereof, and an alkyl amidopropyl dimethylamine oxide; and introducing the foamed treatment fluid into the subterranean formation. 2. The method of claim 1 wherein the alkali salt of the C 6-10 alkyl ether sulfate has in range of from about 1.5 moles to about 2 moles of ethylene oxide substitution, and the alkali salt of the C4 alkyl ether sulfate has in range of from about 1.8 moles to about 2.5 moles of ethylene oxide substitution. 3. The method of claim 1 wherein the alkali salt of the C 6-10 alkyl ether sulfate is present in the alkali salt of the ether sulfate in an amount in the range of from about 65% to about 90% by weight of the alkali salt of the alkali ether sulfate, and the alkali salt of the C4 alkyl ether sulfate is present in the alkali salt of the ether sulfate in an amount in the range of from about 10% to about 35% by weight of the alkali salt of the alkali ether sulfate. 4. The method of claim 1 wherein the alkali salt of the alkali ether sulfate further comprises an ammonium sulfate. 5. The method of claim 1 wherein the alkyl amidopropyl amphoteric surfactant comprises the alkyl amidopropyl hydroxysultaine, the alkyl amidopropyl hydroxysultaine comprising a radical selected from the group consisting of a decyl radical, a cocoyl radical, a lauryl radical, a cetyl radical, and an oleyl radical. 6. The method of claim 1 wherein the alkyl amidopropyl amphoteric surfactant comprises the alkyl amidopropyl hydroxysultaine, the alkyl amidopropyl hydroxysultaine comprising a cocoyl radical. 7. The method of claim 1 wherein the alkyl amidopropyl amphoteric surfactant comprises the alkyl amidopropyl betaine, the alkyl amidopropyl betaine comprising a radical selected from the group consisting of a decyl radical, a cocoyl radical, a lauryl radical, a cetyl radical, and an oleyl radical. 8. The method of claim 1 wherein the alkyl amidopropyl amphoteric surfactant comprises the alkyl amidopropyl betaine, the alkyl amidopropyl betaine comprising a cocoyl radical. 9. The method of claim 1 wherein the alkyl amidopropyl dimethylamine oxide comprises a cocamidopropyl dimethylamine oxide. 10. The method of claim 1: wherein the alkali salt of the alkyl ether sulfate is present in the foaming and foam stabilizing surfactant mixture in an amount in the range of from about 60% to about 75% by weight of the surfactant mixture; wherein the alkyl amidopropyl amphoteric surfactant is present in the foaming and foam stabilizing surfactant mixture in an amount in the range of from about 15% to about 25% by weight of the surfactant mixture; and wherein the alkyl amidopropyl dimethylamine oxide is present in the foaming and foam stabilizing surfactant mixture in an amount in the range of from about 1% to about 10% by weight of the surfactant mixture. 11. The method of claim 1 wherein the foaming and foam stabilizing surfactant mixture further comprises an alkali salt. 12. The method of claim 1 wherein the foaming and foam stabilizing surfactant mixture is present in the foamed treatment fluid in an amount in the range of from about 0.2% to about 2.0% by volume of the water present in the foamed treatment fluid. 13. The method of claim 1 wherein the foamed treatment fluid further comprises a gelling agent. 14. The method of claim 1 wherein the foamed treatment fluid further comprises particulates. 15. A method of fracturing a subterranean formation comprising: providing a foamed treatment fluid comprising: water, a gas, and a foaming and foam stabilizing surfactant mixture comprising: an alkali salt of an alkyl ether sulfate, wherein the alkali salt of the alkyl ether sulfate comprises an alkali salt of a C6-10 alkyl ether sulfate, and an alkali salt of a C4 alkyl ether sulfate, an alkyl amidopropyl amphoteric surfactant selected from the group consisting of an alkyl amidopropyl hydroxysultaine, an alkyl amidopropyl betaine, and combinations thereof, an alkyl amidopropyl dimethylamine oxide; and introducing the foamed treatment fluid into the subterranean formation at or above a pressure sufficient to create one or more fractures in the subterranean formation. 16. The method of claim 15: wherein the alkali salt of the alkyl ether sulfate is present in the foaming and foam stabilizing surfactant mixture in an amount in the range of from about 60% to about 75% by weight of the surfactant mixture; wherein the alkyl amidopropyl amphoteric surfactant is present in the foaming and foam stabilizing surfactant mixture in an amount in the range of from about 15% to about 25% by weight of the surfactant mixture; and wherein the alkyl amidopropyl dimethylamine oxide is present in the foaming and foam stabilizing surfactant mixture in an amount in the range of from about 1% to about 10% by weight of the surfactant mixture. 17. The method of claim 15 wherein the alkyl amidopropyl amphoteric surfactant comprises the alkyl amidopropyl betaine, the alkyl amidopropyl betaine comprising a cocoyl radical. 18. The method of claim 15 wherein the alkyl amidopropyl amphoteric surfactant comprises an alkyl amidopropyl hydroxysultaine, the alkyl amidopropyl hydroxysultaine comprising a cocoyl radical. 19. A method of fracturing a subterranean formation comprising: providing a foamed treatment fluid comprising: water, a gelling agent, a gas, and a foaming and foam stabilizing surfactant mixture comprising: an ammonium salt of an alkyl ether sulfate, wherein the ammonium salt of the alkyl ether sulfate comprises an ammonium salt of a C6-10 alkyl ether sulfate having in the range of from about 1.5 moles to about 2 moles of ethylene oxide substitution, and an alkali salt of a C4 alkyl ether sulfate having in the range of from about 1. 8 moles to about 2.5 moles of ethylene oxide substitution, a cocamidopropyl amphoteric surfactant selected from the group consisting of a cocamidopropyl hydroxysultaine, a cocamidopropyl betaine, and combinations thereof, and a cocamidopropyl dimethylamine oxide; and introducing the foamed treatment fluid into the subterranean formation at or above a pressure sufficient to create one or more fractures in the subterranean formation. 20. The method of claim 19: wherein the alkali salt of the alkyl ether sulfate is present in the foaming and foam stabilizing surfactant mixture in an amount in the range of from about 60% to about 75% by weight of the surfactant mixture; wherein the alkyl amidopropyl amphoteric surfactant is present in the foaming and foam stabilizing surfactant mixture in an amount in the range of from about 15% to about 25% by weight of the surfactant mixture; and wherein the alkyl amidopropyl dimethylamine oxide is present in the foaming and foam stabilizing surfactant mixture in an amount in the range of from about 1% to about 10% by weight of the surfactant mixture.

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이 특허를 인용한 특허 피인용횟수: 15

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Foamed treatment fluids and associated methods

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Foamed treatment fluids and associated methods

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