| 发明名称 |
FLEXIBLE DIRECTIONAL DRILLING APPARATUS AND RELATED METHODS |
| 摘要 |
A bottom hole assembly to directionally drill a subterranean formation includes a drill bit, a stabilizer assembly located proximate to and behind the drill bit, a drilling assembly comprising a drive mechanism and a directional mechanism, and a flex housing integral with the drilling assembly.
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| 申请公布号 |
US2011067925(A1) |
申请公布日期 |
2011.03.24 |
| 申请号 |
US20100956889 |
申请日期 |
2010.11.30 |
| 申请人 |
SMITH INTERNATIONAL, INC. |
发明人 |
UNDERWOOD LANCE D.;DEWEY CHARLES H. |
| 分类号 |
E21B7/04 |
主分类号 |
E21B7/04 |
| 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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