发明名称 |
Method and device for rotary well drilling |
摘要 |
The invention concerns a method which includes the steps of: introducing into a pre-drilled portion of a well (16) a drilling system containing a drilling bit (11) assembled with tubular lining elements (15), an element for measuring the inclination and azimuth direction of the pre-drilled part of the well, an element for rotary friction (26, 27) against the wall of the pre-drilled part and an element capable of modifying the friction coefficient of the friction element against the wall; measuring the azimuth direction of the pre-drilled part of the well (16); and varying the friction coefficient of the friction element (26, 27) sufficiently to influence the azimuth direction of the next well portion to be drilled.
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申请公布号 |
US6702042(B2) |
申请公布日期 |
2004.03.09 |
申请号 |
US20020088931 |
申请日期 |
2002.06.20 |
申请人 |
TOTAL FINA ELF S.A.;ASSOCIATION POUR LA RECHERCHE ET LE DEVELOPPEMENT DES METHODES ET PROCESSUS INDUSTRIELS |
发明人 |
GENEVOIS JEAN-MICHEL;SELLAMI HEDI;SIMON CHRISTOPHE |
分类号 |
E21B7/06;E21B17/10;(IPC1-7):E21B47/02 |
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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