发明名称 |
Deviated wellbore drilling system and apparatus |
摘要 |
A deviated wellbore drilling system suitable for drilling curved wellbores which have a radius of curvature of approximately 10 to 1,000 feet relative to a vertical or near vertical wellbore comprises a drill string, a drill bit, and a fluid-operated drill motor having a curved or bent housing section for rotating the drill bit independently of the drill string. The drilling motor has an elongate tubular rotor/stator drive section containing a rubber stator and a steel rotor and the housing is bent or curved intermediate its ends. A straight or bent universal section below the bent or curved rotor/stator section contains a universal joint for converting orbiting motion of the rotor to concentric rotary motion at the bit, and a bearing pack section below the universal section contains radial and thrust bearings to absorb the high loads applied to the bit.
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申请公布号 |
US5022471(A) |
申请公布日期 |
1991.06.11 |
申请号 |
US19900461741 |
申请日期 |
1990.01.08 |
申请人 |
MAURER ENGINEERING, INC. |
发明人 |
MAURER, WILLIAM C.;MCDONALD, WILLIAM J. |
分类号 |
E21B4/02;E21B7/06;E21B7/08 |
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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