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US07662756B2 Methods for effecting controlled break in pH dependent foamed fracturing fluid 有权
实现pH依赖性泡沫压裂液控制断裂的方法

Methods for effecting controlled break in pH dependent foamed fracturing fluid
Abstract:
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: (CH2—CH2—O)XH R—N
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