Clamp-on stabilizer

Details Clamp-on stabilizer Clamp-on stabilizer

1982-02-22

1983-05-24

Purser, Ernest R.

Boring or penetrating the earth

Processes

175325, 166241, 308 4A, 192 79, 192 94, E21B 1710

Patent

active

043846262

ABSTRACT:
A clamp-on stabilizer fixes the lateral position of a drill string in a borehole. The stabilizer includes a gripping sleeve with slotted and tapered ends, a stabilizer body receiving the sleeve, and a tubular locknut threaded into the body. The lower end of the stabilizer body is internally tapered to engage one tapered end of the gripping sleeve, while a ring abutting the locknut engages the other tapered end. In a preferred embodiment the tapers are different at each end of the sleeve to produce a sequential locking effect. A full-length longitudinal slot in the sleeve increases the tolerance range for objects to be clamped by the stabilizer.

REFERENCES:
patent: 3276824 (0000-01-01), Carter
patent: 3482889 (1969-12-01), Cochran
patent: 3642079 (0000-01-01), Van Note
patent: 3799277 (1974-03-01), Kellner
patent: 3916998 (0000-01-01), Bass, Jr. et al.
patent: 4000549 (0000-01-01), Brumley et al.
patent: 4101179 (0000-01-01), Barron
patent: 4105262 (0000-01-01), Richey
patent: 4131167 (0000-01-01), Richey
patent: 4258804 (0000-01-01), Richey et al.

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