发明名称 |
Process for disruption of filter cakes |
摘要 |
A process for producing a self-disrupting filter cake in an underground formation, which process comprises: (a) incorporating into a drilling fluid a solid polymer capable of being converted by hydrolysis into one or more organic acids; (b) using the drilling fluid to drill a wellbore into the underground formation such that the solid polymer in the drilling fluid contributes to the formation of a filter cake; and (c) allowing the solid polymer to hydrolyse in the presence of water and to disrupt the integrity of the filter cake. A drilling fluid which contains as a bridging agent one or more solid polymers capable of being converted by hydrolysis into one or more organic acids is also provided.
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申请公布号 |
US7935660(B2) |
申请公布日期 |
2011.05.03 |
申请号 |
US20050594394 |
申请日期 |
2005.03.24 |
申请人 |
CLEANSORB LIMITED |
发明人 |
HARRIS RALPH EDMUND;MCKAY IAN DONALD |
分类号 |
C09K8/03;C09K8/06;C09K8/08;C09K8/12;C09K8/504;C09K8/508;C09K8/52 |
主分类号 |
C09K8/03 |
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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