| 发明名称 |
A DEVICE FOR A MECHANIZED PIPE WRENCH |
| 摘要 |
A device for mechanized screwing and unscrewing of pipe strings (26), especially for use on a drill floor (22), in connection with petroleum production, and where a pipe wrench (10), when in the inactive position, is located between the upper end portion of the pipe string (26) and the drill floor (22).
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| 申请公布号 |
WO02075101(A1) |
申请公布日期 |
2002.09.26 |
| 申请号 |
WO2002NO00097 |
申请日期 |
2002.03.07 |
| 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 |
E21B19/16;(IPC1-7):E21B19/16 |
主分类号 |
E21B19/16 |
| 代理机构 |
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代理人 |
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