发明名称 |
Low Equivalent Circulation Density Setting Tool |
摘要 |
A downhole oilfield tool assembly comprises a mandrel, a ball valve oriented to block downwards flow through the mandrel in a closed position, a first piston located above the ball 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 |
US2014008080(A1) |
申请公布日期 |
2014.01.09 |
申请号 |
US201314022200 |
申请日期 |
2013.09.09 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
WATSON BROCK;MOELLER DANIEL;MILLER KEVIN J. |
分类号 |
E21B34/06;E21B43/10 |
主分类号 |
E21B34/06 |
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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