发明名称 |
Griperenhet for bronntraktorer |
摘要 |
A gripper assembly for anchoring a tool within a downhole passage and for possibly assisting movement of the tool within the passage. The gripper assembly includes an elongated mandrel and flexible toes that can be radially displaced to grip onto the surface of the passage. The toes are displaced by the interaction of a driver slidable on the mandrel and a driver interaction element on the toes. In one embodiment, the toes are displaced by the interaction of rollers and ramps that are longitudinally movable with respect to one another. In another embodiment, the toes are displaced by the interaction of toggles that rotate with respect to the toes. |
申请公布号 |
NO317476(B1) |
申请公布日期 |
2004.11.01 |
申请号 |
NO20010000760 |
申请日期 |
2001.02.14 |
申请人 |
WESTERN WELL TOOL INC |
发明人 |
KRUEGER RUDOLPH ERNST;BLOOM DUANE;MOORE NORMAN BRUCE |
分类号 |
E21B4/18;E21B23/00;E21B23/01;E21B23/04 |
主分类号 |
E21B4/18 |
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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