Rock bit with offset tool port

Details Rock bit with offset tool port Rock bit with offset tool port

1992-04-06

1993-09-14

Bui, Thuy M.

Boring or penetrating the earth

Bit or bit element

With fluid conduit lining or element

E21B 1000

Patent

active

052440508

ABSTRACT:
An earth boring drill bit having a relatively large tool passage port offset to one side of the bit centerline. The port is offset to permit substantially full bottom hole coverage of the cutting structure. The port permits various logging and sampling tools to pass through the bit to allow sampling and testing to be performed without tripping out the drill string.

REFERENCES:
patent: 2086682 (1937-07-01), Scott
patent: 3007750 (1961-11-01), Cunningham
patent: 3137354 (1964-06-01), Crawford et al.
patent: 3329222 (1967-07-01), Neilson
patent: 4287957 (1981-09-01), Evans
patent: 4397363 (1983-08-01), Fuller
patent: 4619335 (1986-10-01), McCullough
patent: 4886131 (1989-12-01), Cholet et al.

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