Wedge lock stabilizer

Details Wedge lock stabilizer Wedge lock stabilizer

E - Fixed Constructions

21

B

255/28

E21B 17/10 (2006.01) E21B 10/62 (2006.01)

Patent

CA 1165753

WEDGE LOCK STABILIZER ABSTRACT OF THE INVENTION A drill string stabilizer in which the wall-contacting wear elements are secured in their accommodating slots by an undercut along each side and a tapered wedge-receiving notch along the underneath side for accepting one or more wedge pieces. In one embodiment, the tapered notch is along the side of an axially elongate slot and a plurality of wedges are located in securing position along one side. In another embodiment, there are tapered notches along the center between two separated sections of wear elements. In a third embodiment, the slot for the wear elements is not axially elongated but on a spiral angle. In a fourth embodiment, a plurality of short wear elements are employed end-to-end, each with its own wedge piece and each also located on a thrust-bearing and locating pin.

395675

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