Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Normally curved guide or shaft
Patent
1988-01-12
1989-05-09
Dang, Hoang C.
Boring or penetrating the earth
Means traveling with tool to constrain tool to bore along...
Normally curved guide or shaft
175107, E21B 402
Patent
active
048280534
ABSTRACT:
A deviated wellbore drilling system suitable for drilling curved wellbores which have a radius of curvature of approximately 200 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 univeral 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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Maurer William C.
McDonald William J.
Dang Hoang C.
Maurer Engineering Inc.
Mosely Neal J.
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