发明名称 |
SUBSEA CASING DRILLING SYSTEM |
摘要 |
In one embodiment, a casing bit drive assembly may be used with a casing drilling system. The casing bit drive assembly may include one or more of the following: a retrievable drilling motor; a decoupled casing sub; a releasable coupling between the motor and casing bit; a releasable coupling between the motor and casing; a cement diverter; and a casing bit.
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申请公布号 |
US2013233547(A1) |
申请公布日期 |
2013.09.12 |
申请号 |
US201313774989 |
申请日期 |
2013.02.22 |
申请人 |
WEATHERFORD/LAMB, INC. |
发明人 |
TWARDOWSKI ERIC M.;ODELL, II ALBERT C.;TREVINO JOSE A. |
分类号 |
E21B7/20;E21B4/00;E21B33/14 |
主分类号 |
E21B7/20 |
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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