Large diameter oil well drilling bit

Details Large diameter oil well drilling bit Large diameter oil well drilling bit

1980-06-05

1983-01-25

Pate, III, William F.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175356, 175366, 175375, 76108A, E21B 1018, E21B 1020

Patent

active

043698492

ABSTRACT:
The present invention discloses a large diameter oil well drilling bit which utilizes a unique cast body upon which are secured a plurality of cutting assemblies comprising a leg, a bearing journal and a rolling cutter mounted on the bearing journal.

REFERENCES:
patent: 2124521 (1938-07-01), Williams et al.
patent: 2151348 (1939-03-01), Fisher
patent: 2318370 (1943-05-01), Buvel
patent: 2648526 (1957-08-01), Lanchester
patent: 2949281 (1960-08-01), Bauer et al.
patent: 3850256 (1974-11-01), McQueen
patent: 4156123 (1979-05-01), Fischer et al.
patent: 4158973 (1979-06-01), Schumacher, Jr.
patent: 4229638 (1980-10-01), Lichte

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