| 发明名称 |
ANTI-ROTATION DEVICES FOR USE WITH WELL TOOLS |
| 摘要 |
An anti-rotation device (7; 107) for use in a well tool, for example a top plug (1) or a bottom plug (101), has a tapered male member (7; 107) having a corrugated outer surface (8; 108) which can enter a corresponding recess (114; 214) in another well tool to inhibit relative rotation therebetween. |
| 申请公布号 |
WO9415062(A1) |
申请公布日期 |
1994.07.07 |
| 申请号 |
WO1993EP03420 |
申请日期 |
1993.12.03 |
| 申请人 |
WEATHERFORD/LAMB, INC.;LUCAS, BRIAN, RONALD |
发明人 |
BUDDE, PETER |
| 分类号 |
E21B21/10;E21B29/00;E21B33/12;E21B33/16;(IPC1-7):E21B33/16 |
主分类号 |
E21B21/10 |
| 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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