发明名称 |
Backoff sub and method for remotely backing off a target joint |
摘要 |
A backoff sub includes a housing and a backoff facilitator at least partially within the housing. The backoff sub is a part of the string that is stuck and is capable of adding energy to the string within which the sub is disposed to facilitate backing off of a portion of that sting close to a stuck point of that string. A method is included. |
申请公布号 |
US7980310(B2) |
申请公布日期 |
2011.07.19 |
申请号 |
US20080104185 |
申请日期 |
2008.04.16 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
STOESZ CARL W.;BUSSEAR TERRY R. |
分类号 |
E21B31/00 |
主分类号 |
E21B31/00 |
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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