| 发明名称 |
Running tool. |
| 摘要 |
<p>A running tool (17) is provided with a two stage piston (22,23) damper which makes a preliminary landing (16) at a wellhead to produce a throttled flow of oil and decelerate the tool before equipment carried by the tool makes a final landing (12). <IMAGE></p> |
| 申请公布号 |
EP0658683(A1) |
申请公布日期 |
1995.06.21 |
| 申请号 |
EP19930310225 |
申请日期 |
1993.12.17 |
| 申请人 |
COOPER INDUSTRIES INC. |
发明人 |
HOBBS, CLIFFORD JACK;MOSSCROP, GUY;KELLY, THOMAS G |
| 分类号 |
E21B17/07;E21B23/04;E21B33/04;F16F9/342;F16F9/49;(IPC1-7):E21B23/04 |
主分类号 |
E21B17/07 |
| 代理机构 |
|
代理人 |
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| 主权项 |
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| 地址 |
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