发明名称 |
Shock absorber assembly |
摘要 |
A shock absorber assembly adapted to be used with a drill string dampening intermittent shocks and vibrational forces encountered with a drill string, the shock absorber assembly including a mandrel, a tubular body reciprocally mounted with respect to the mandrel, and a dampening device including an annular chamber adapted to be filled with a compressible fluid and a flexible wall with the mandrel adjacent the annular chamber for permitting flexure of the mandrel as needed for dampening.
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申请公布号 |
US4439167(A) |
申请公布日期 |
1984.03.27 |
申请号 |
US19820353624 |
申请日期 |
1982.03.01 |
申请人 |
BOWEN TOOLS, INC. |
发明人 |
BISHOP, THOMAS R.;PEIL, ARCHIE W.;KOVAR, WAYNE A.;CHANCEY, ROGER D. |
分类号 |
E21B17/07;(IPC1-7):E21B17/00 |
主分类号 |
E21B17/07 |
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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