Wells – Above ground apparatus – With assembly or disassembly means
Patent
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
Matthews Guy E.
Pate III William F.
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