发明名称 |
Downhole motor lock-up tool |
摘要 |
The present invention relates to downhole apparatus for limiting rotation of a rotor (4) relative to a stator (8) associated with said rotor (4). Apparatus according to the invention is provided with a locking member (12) movable from a first axial position to a second axial position by the application of a static fluid pressure to a differential area of said locking member (12). The apparatus is characterised by means for selectively applying static fluid pressure to said differential area of said locking member (12).
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申请公布号 |
US2004011520(A1) |
申请公布日期 |
2004.01.22 |
申请号 |
US20030416889 |
申请日期 |
2003.05.16 |
申请人 |
MCGARIAN BRUCE;GILLIES IAN ALEXANDER |
发明人 |
MCGARIAN BRUCE;GILLIES IAN ALEXANDER |
分类号 |
E21B4/02;E21B23/04;(IPC1-7):E21B19/00;E21B23/00 |
主分类号 |
E21B4/02 |
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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