Double-taper slip-on drill string stabilizer

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

E - Fixed Constructions

21

B

255/28

E21B 17/10 (2006.01) F16D 1/05 (2006.01)

Patent

CA 1237120

DOUBLE-TAPER SLIP-ON DRILL STRING STABILIZER ABSTRACT A slip-on stabilizer 6 is provided for adjustable positioning along a drill collar 4. The stabilizer 6 includes a body 7 positioned around the drill collar 4 with a threaded section 18 on each end and at least one tapered inner surface 16, 17 with the tapering surface 15b, 17b beginning at the end of the interior threads 18 and tapered to a generally narrower interior diameter; a plurality of slip segments 11 with at least one tapered surface 29a, 29b complementary matching the tapered surface of the stabilizer body 7; a locking pin 13 and threaded end caps 9, 10 forcing the slip segment 11 toward the center of the stabilizer body 7 thereby wedging the slip segments 11 against the drill collar 4 by screwing the end cap 9, 10 into the body 7 and thereby clamping the stabilizer body 7 assembly onto the drill collar 4.

480346

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