发明名称 |
LOW EQUIVALENT CIRCULATION DENSITY SETTING TOOL |
摘要 |
A downhole oilfield tool assembly is provided. The tool assembly comprises a mandrel, a valve oriented to block downwards flow through the mandrel in a closed position, a first piston located above the valve and at least partly around an outside of the mandrel. The first piston is configured to develop motive force from a pressure differential between an interior of the mandrel and an exterior of the downhole oilfield tool assembly. |
申请公布号 |
CA2823708(C) |
申请公布日期 |
2016.07.05 |
申请号 |
CA20112823708 |
申请日期 |
2011.12.27 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
WATSON, BROCK;MOELLER, DANIEL;MILLER, KEVIN J. |
分类号 |
E21B34/14;E21B17/00;E21B41/00;E21B44/00 |
主分类号 |
E21B34/14 |
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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