发明名称 |
Method and apparatus of locking closed a subsurface safety system |
摘要 |
Locking closed a subsurface safety system in a well production tubing from the well surface by releasably holding the subsurface safety valve in the open position. Thereafter closing the subsurface safety system from the well surface through a control line extending exteriorly of the production tubing. Thereafter preventing the safety system from being opened through the control line.
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申请公布号 |
US5165480(A) |
申请公布日期 |
1992.11.24 |
申请号 |
US19910738994 |
申请日期 |
1991.08.01 |
申请人 |
CAMCO INTERNATIONAL INC. |
发明人 |
WAGONER, DANNY W.;PARKER, DAVID L.;MORRIS, ARTHUR J. |
分类号 |
E21B34/00;E21B34/06;E21B34/10;E21B34/14 |
主分类号 |
E21B34/00 |
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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