| 发明名称 |
ELECTRO-HYDRAULIC SURFACE CONTROLLED SUBSURFACE SAFETY VALVEACTUATOR |
| 摘要 |
An electro-hydraulic surface controlled subsurface safety valve is controllable entirely electrically. The actuator operates on an electrically actuated pressure pump and a supply of hydraulic fluid reservoired in the tool proximate to the safety valve. A dump valve is normally open so that if power fails, pressure is released and the safety valve closes.
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| 申请公布号 |
CA2270851(C) |
申请公布日期 |
2005.02.22 |
| 申请号 |
CA19992270851 |
申请日期 |
1999.05.05 |
| 申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
TROTT, DOUG;TOMPKINS, CHARLES M.;RAWSON, MICHAEL S. |
| 分类号 |
E21B34/00;E21B34/06;(IPC1-7):E21B34/06;F16K31/02;F04B47/06 |
主分类号 |
E21B34/00 |
| 代理机构 |
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