Drilling stabilizer

Details Drilling stabilizer Drilling stabilizer

E - Fixed Constructions

21

B

E21B 17/10 (2006.01) F16L 7/00 (2006.01)

Patent

CA 2125380

ABSTRACT OF DISCLOSURE A stabilizer to be mounted on a collar of a well drilling string including a circumferentially continuous tubular body having several outwardly extending blades thereon, the tubular body having an inner dimension such that it can be slid onto a drill collar, and radially energized components which positively fix the stabilizer on the collar including dies mounted in the blades, and having serrations on their inner faces, and drive elements to cause the serrations to bite into the collar and thereby fix the stabilizer thereon in a selected longitudinal and rotational position.

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