发明名称 |
Removing downhole filter cake |
摘要 |
Filter cake comprised of a gelling agent and calcium carbonate is removed from the walls of an open hole well bore by contacting it with a delayed clean-up solution comprised of water and a formate ester. The filter cake can be formed during drilling using a drilling fluid comprising a gelling agent and calcium carbonate.
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申请公布号 |
EP1441104(A1) |
申请公布日期 |
2004.07.28 |
申请号 |
EP20030257885 |
申请日期 |
2003.12.16 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
TODD, BRADLEY L.;DAVIDSON, ERIC |
分类号 |
C09K8/08;C09K8/52;C09K8/86;(IPC1-7):E21B37/06;C09K7/02;E21B43/25 |
主分类号 |
C09K8/08 |
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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