Friction hold wear bushing

Details Friction hold wear bushing Friction hold wear bushing

Filed on

1980-12-04

Date issued

1982-12-07

Examiner

Pate, III, William F.

Patent Class

Wells

SubClass

Above ground apparatus

SubSubClass

With assembly or disassembly means

Other Related Categories

166 82, 285 39, 285338, E21B 3303

Type

Patent

Status

active

Patent number

043622100

Description

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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