Double-taper slip-on drill string stabilizer

Details Double-taper slip-on drill string stabilizer Double-taper slip-on drill string stabilizer

1984-05-29

1986-07-15

Novosad, Stephen J.

Boring or penetrating the earth

With tool shaft detail

Shaft carried guide or protector

166241, E21B 1710

Patent

active

046000631

ABSTRACT:
A slip-on stabilizer is provided for adjustable positioning along a drill collar. The stabilizer includes a body positioned around the drill collar with a threaded section on each end and at least one tapered inner surface with the tapering surface beginning at the end of the interior threads and tapered to a generally narrower interior diameter; a plurality of slip segments with at least one tapered surface complementary matching the tapered surface of the stabilizer body; a locking pin and threaded end caps forcing the slip segment toward the center of the stabilizer body thereby wedging the slip segments against the drill collar by screwing the end cap into the body and thereby clamping the stabilizer body assembly onto the drill collar.

REFERENCES:
patent: 2906346 (1959-09-01), Johnston
patent: 3916998 (1975-11-01), Bass et al.
patent: 4000549 (1977-01-01), Brumley et al.
patent: 4101179 (1978-07-01), Barron
patent: 4105262 (1978-08-01), Richey
patent: 4131167 (1978-12-01), Richey
patent: 4258804 (1981-03-01), Richey et al.
patent: 4276932 (1981-07-01), Salinger et al.
patent: 4337088 (1982-06-01), Moses
patent: 4349050 (1982-09-01), Bergstrom et al.
patent: 4378135 (1983-03-01), Enen et al.
patent: 4384626 (1983-05-01), Derouin

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