| 发明名称 |
Activation of downhole tools |
| 摘要 |
A primarily electronically set permanent or retrievable downhole tool having a hydraulic contingency arrangement to activate the downhole tool in the conventional way in the event electronic communication fails.
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| 申请公布号 |
US5819854(A) |
申请公布日期 |
1998.10.13 |
| 申请号 |
US19960595884 |
申请日期 |
1996.02.06 |
| 申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
DOANE, JAMES C.;HENDERSON, WILLIAM DAVID;JORDAN, JR., HENRY JOE |
| 分类号 |
E21B23/00;E21B23/04;E21B33/1295;(IPC1-7):E21B34/06 |
主分类号 |
E21B23/00 |
| 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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