发明名称 |
Methods for effecting controlled break in pH dependent foamed fracturing fluid |
摘要 |
The invention provides a fluid for use in a subterranean formation penetrated by a wellbore, the fluid comprising: (a) water; (b) an orthoester; and (c) a surfactant comprising a tertiary alkyl amine ethoxylate generally represented by the following formula: wherein R is an alkyl group or aryl group, and wherein X and Y are each independently at least one. The invention also provides a method of fracturing a subterranean formation, comprising the step of forming a foamed fracturing fluid comprising water; an orthoester; a surfactant comprising a tertiary alkyl amine ethoxylate generally represented by the formula above; and a gas. The method also provides the step of introducing the foamed fracturing fluid into a subterranean formation at a pressure sufficient to create a fracture in the subterranean formation.
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申请公布号 |
US7299877(B2) |
申请公布日期 |
2007.11.27 |
申请号 |
US20050199921 |
申请日期 |
2005.08.09 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
WELTON THOMAS D.;TODD BRADLEY L.;MCMECHAN DAVID |
分类号 |
E21B43/26 |
主分类号 |
E21B43/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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