发明名称 |
Down-hole motor and method for directional drilling of boreholes. |
摘要 |
<p>A down-hole motor is provided with stabilizer means 10A for centralizing the longitudinal motor axis I in a borehole and with a bearing unit 11 which supports the output shaft 5 in such an inclined position relative to the motor housing 1, that the central axis II of the output shaft 5 intersects the longitudinal axis I at a point of intersection 20 located outside the housing 1.</p><p>Directional drilling of a borehole is carried out by actuating a drill bit 12 to rotate relative to the motor housing 1 about the central axis II of the output shaft 5 and simultaneously therewith rotating the motor housing 1 about the longitudinal motor axis I over periods that are preceded and succeeded by selected periods over which the motor housing 1 is not rotated.</p> |
申请公布号 |
EP0109699(A2) |
申请公布日期 |
1984.05.30 |
申请号 |
EP19830201502 |
申请日期 |
1983.10.18 |
申请人 |
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. |
发明人 |
KAMP, ANTHONY WILLEM |
分类号 |
E21B4/02;E21B7/06;(IPC1-7):21B7/06;21B4/02 |
主分类号 |
E21B4/02 |
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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