Deviated wellbore drilling system and apparatus

Details Deviated wellbore drilling system and apparatus Deviated wellbore drilling system and apparatus

1990-01-08

1991-06-11

Melius, Terry L.

Boring or penetrating the earth

Means traveling with tool to constrain tool to bore along...

Normally curved guide or shaft

175101, 175107, E21B 708

Patent

active

050224719

ABSTRACT:
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.

REFERENCES:
patent: 3586116 (1971-06-01), Tiraspolsky
patent: 4739842 (1988-04-01), Kruger et al.
patent: 4828053 (1989-05-01), Maurer et al.
patent: 4880066 (1989-11-01), Steiginga et al.

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