Boring or penetrating the earth – Below-ground impact members – With releasable means to detachably retain telescoping...
Patent
1980-01-31
1982-02-02
Argenbright, Tony M.
Boring or penetrating the earth
Below-ground impact members
With releasable means to detachably retain telescoping...
175104, 175195, E21B 1700, E21B 304
Patent
active
043133185
ABSTRACT:
A downhole drilling system utilizes a non-rotating kelly bushing for locking in the torque created in the drill string by the downhole drilling motor. The kelly bushing prevents rotational movement of the kelly secured to the drill string on which the downhole motor is attached. The kelly bushing includes a torque mechanism for enabling the kelly and the attached drill string to move in a forward direction into the hole being drilled while prohibiting any rotational movement. The torque mechanism includes a pair of rollers which are adapted to non-rotatably receive and vertically guide the kelly therebetween. The spacing between the rollers is adjustable to accommodate different sized kellys. A guide mechanism is provided in the kelly bushing for enabling an electrical wire to be attached to either the downhole motor or a sensing mechanism located in the area of the downhole motor for feeding back to the surface appropriate electrical signals indicative of certain drilling operations.
REFERENCES:
patent: 763253 (1904-06-01), Bunnell
patent: 2221767 (1940-11-01), Hayward et al.
patent: 2312323 (1943-03-01), Derrick
patent: 2312804 (1943-03-01), Derrick
patent: 4073352 (1978-02-01), Underwood
patent: 4258802 (1981-03-01), Tullos et al.
Tullos Homan C.
Woods Dewey W.
Argenbright Tony M.
Tullos & Woods Tools, Inc.
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