| 发明名称 |
METHOD AND APPARATUS FOR BACKING OFF A TUBULAR MEMBER FROM A WELLBORE |
| 摘要 |
A back-off tool for use in a tubular member disposed inside a wellbore. The back-off tool includes a housing and at least one sonic wave generator mounted within the housing. The sonic wave generator is configured to generate a plurality of sonic waves.
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| 申请公布号 |
CA2471789(C) |
申请公布日期 |
2010.08.10 |
| 申请号 |
CA20042471789 |
申请日期 |
2004.06.22 |
| 申请人 |
WEATHERFORD/LAMB, INC. |
发明人 |
ROBERTS, JOHN |
| 分类号 |
E21B23/00;E21B17/02;E21B31/00 |
主分类号 |
E21B23/00 |
| 代理机构 |
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代理人 |
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