发明名称 |
Method and apparatus for orienting equipment in a well |
摘要 |
An apparatus for installation in a drill string to orientate equipment in or below an underwater blow out preventer has an elongate member to be corrected in the drill string and having thereon a second member moveable axially with respect thereto but having means to prevent relative rotation, the second member having a surface adapted for engagement with the rams of the blow out preventer.
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申请公布号 |
US4022281(A) |
申请公布日期 |
1977.05.10 |
申请号 |
US19760676529 |
申请日期 |
1976.04.13 |
申请人 |
THE BRITISH PETROLEUM COMPANY LIMITED |
发明人 |
PENNOCK, MICHAEL DEREK |
分类号 |
E21B23/02;E21B33/06;E21B33/064;E21B41/00;(IPC1-7):E21B23/00 |
主分类号 |
E21B23/02 |
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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