发明名称 |
A METHOD AND A DEVICE FOR PREVENTING PIPESKIDDING |
摘要 |
A method and device for preventing a pipe string (5) clampingly arranged in a slips (2) from slipping out of the slips (2) in the event of the pipe string (5) slipping in the slips (2), wherein a pipe clamp/tong (22) is clamped, preferably hydraulically, onto the pipe string (5) at a position above the slips (2) and maintained in the clamped state for essentially as long as the pipe string (5) is held by the slips (2), the pipe clamp/tong (22), in the event of the pipe string (5) slipping in the slips (2), being displaced together with the pipe string (5) until the pipe clamp/tong (22) stops against the wedges (16) of the slips (2).
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申请公布号 |
WO03054343(A1) |
申请公布日期 |
2003.07.03 |
申请号 |
WO2002NO00454 |
申请日期 |
2002.11.29 |
申请人 |
MALM ORSTAD AS;ODFJELL SERVICES AS;MONG, TOR, EGIL;JOHNSEN, TOMMY |
发明人 |
MONG, TOR, EGIL;JOHNSEN, TOMMY |
分类号 |
E21B19/10;E21B19/12;(IPC1-7):E21B19/10 |
主分类号 |
E21B19/10 |
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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