Friction hold wear bushing

Details Friction hold wear bushing Friction hold wear bushing

1980-12-04

1982-12-07

Pate, III, William F.

Wells

Above ground apparatus

With assembly or disassembly means

166 82, 285 39, 285338, E21B 3303

Patent

active

043622100

ABSTRACT:
A wear bushing for use in the drilling of oil and gas wells is disclosed for the protection of the casing being drilled within against damage by drill string members. Novel means are disclosed for the positioning and mounting of the wear bushing with the casing such that it is held in position against forces produced during drilling operations.

REFERENCES:
patent: 2926701 (1960-03-01), Campbell
patent: 2959193 (1960-11-01), Guldenzoph et al.
patent: 3137348 (1964-06-01), Ahlshore et al.
patent: 3247914 (1966-04-01), Slack
patent: 3334923 (1967-08-01), Patch
patent: 3797864 (1974-03-01), Hynes

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