发明名称 |
Method for drilling a wellbore using a bi-center drill bit |
摘要 |
A method is disclosed for drilling a wellbore. The method includes operating a turbine-type mud motor having a bi-center drill bit coupled to it, and applying an axial force to the bit which is selected so that the bit drills in a directionally stable manner. In one embodiment, the motor is a steerable motor operated to maintain a selected trajectory of the wellbore.
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申请公布号 |
US6883622(B2) |
申请公布日期 |
2005.04.26 |
申请号 |
US20010888328 |
申请日期 |
2001.06.22 |
申请人 |
SMITH INTERNATIONAL, INC. |
发明人 |
BEATON TIMOTHY P.;YOUNG THOMAS L.;TRUAX DAVID K. |
分类号 |
E21B7/06;(IPC1-7):E21B10/26 |
主分类号 |
E21B7/06 |
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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