Hydraulic stabilizer for bore hole tool

Details Hydraulic stabilizer for bore hole tool Hydraulic stabilizer for bore hole tool

1987-02-13

1988-10-11

Novosad, Stephen J.

Wells

Means for perforating, weakening, bending or separating pipe...

Cutter rotates circumferentially of pipe

166241, 175269, 175325, E21B 2900, E21B 1710

Patent

active

047763949

ABSTRACT:
A stabilizer (36) mounted on a mandrel (14) of a workstring (12) within a casing (10) of a well bore hole. The stabilizer (36) has an upper carrier (38) fixed to the mandrel (14) and a lower carrier (40) mounted on the mandrel (14) for relative sliding movement. Shoes (70) are mounted by links or arms (64, 74) to bearing housing (50, 80) on the carriers (38, 40). The bearing housings (50, 80) are mounted for relative rotation on the carriers (38, 40) and permit the mandrel (14) and workstring (12) to rotate relative to the shoes (70) upon fluid actuation of lower carrier (40) and engagement of the casing (10) by the shoes (70).

REFERENCES:
patent: 2061316 (1936-11-01), Brack et al.
patent: 3098534 (1963-07-01), Carr et al.
patent: 3273645 (1966-09-01), Der Mott
patent: 3370657 (1968-02-01), Antle
patent: 3376927 (1968-04-01), Brown
patent: 3664416 (1972-05-01), Nicolas et al.

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