发明名称 |
Rotary drill bit and method for designing a rotary drill bit for directional and horizontal drilling |
摘要 |
A multi-layer downhole drilling tool designed for directional and horizontal drilling is disclosed. The drilling tool includes a bit body including a rotational axis extending therethrough. A plurality of primary blades are disposed on exterior portions of the bit body and a plurality of secondary blades are disposed on exterior portions of the bit body between the primary blades. The drilling tool further includes a plurality of first-layer cutting elements disposed on exterior portions of the primary blades and a plurality of second-layer cutting elements disposed on exterior portions of the secondary blades. The second-layer cutting elements are track set with the first-layer cutting elements in an opposite track set configuration. |
申请公布号 |
GB2517331(B) |
申请公布日期 |
2016.02.17 |
申请号 |
GB20140020604 |
申请日期 |
2012.05.30 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
SHILIN CHEN |
分类号 |
E21B10/43 |
主分类号 |
E21B10/43 |
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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