Wedge lock stabilizer

Details Wedge lock stabilizer Wedge lock stabilizer

1981-04-09

1983-04-05

Pate, III, William F.

Boring or penetrating the earth

With tool shaft detail

Shaft carried guide or protector

175406, 175408, 166173, 308 4A, 403381, E21B 1710

Patent

active

043788521

ABSTRACT:
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 pluraity 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.

REFERENCES:
patent: 3535204 (1970-10-01), Truxa
patent: 3560060 (1968-12-01), Morris
patent: 3818999 (1974-06-01), Garrett
patent: 4106823 (1978-08-01), Bassinger
patent: 4190124 (1980-02-01), Terry
patent: 4227586 (1980-10-01), Bassinger
patent: 4231437 (1980-11-01), Swersky et al.
patent: 4280742 (1981-07-01), Justman
Oncor Drilling Tools General Catalog, 1980-81, pp. 14-16.

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