发明名称 |
BIT FOR DRILLING WELLS AND ASSOCIATED DRILLING METHOD |
摘要 |
The invention relates to a bit for drilling wells comprising: - a front face, - a plurality of radial blades (2) provided with cutting elements (3), the blades being distributed around the front face, - a space (4) for forming a core (10), the space being situated at the centre of the front face, - a cavity (5) for evacuating the core towards the periphery of the bit, the cavity being situated between two adjacent blades. The invention also relates to a method for drilling wells using the bit. The invention makes it possible to rapidly drill wells of great depth in all types of rocks without the risk of clogging. |
申请公布号 |
WO2008149240(A2) |
申请公布日期 |
2008.12.11 |
申请号 |
WO2008IB02299 |
申请日期 |
2008.04.22 |
申请人 |
TOTAL S.A.;NAEGEL, MATTHIEU;DELWICHE, ROBERT;DESMETTE, SEBASTIAN;DESCHAMPS, BENOIT;HAHATI, ABDELHAKIM |
发明人 |
NAEGEL, MATTHIEU;DELWICHE, ROBERT;DESMETTE, SEBASTIAN;DESCHAMPS, BENOIT;HAHATI, ABDELHAKIM |
分类号 |
E21B10/04;E21B10/02;E21B10/43;E21B49/02 |
主分类号 |
E21B10/04 |
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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