Earth boring guide

Details Earth boring guide Earth boring guide

1980-07-24

1981-12-01

Pate, III, William F.

Boring or penetrating the earth

Processes

Boring curved or redirected bores

175 75, 175 78, 175 80, E21B 708

Patent

active

043031340

ABSTRACT:
The invention provides a guide means for deflecting drilling means at a desired location in a well bore to enable the drilling of either a sharply deviated extension thereof or a lateral branch bore. A frame carrying spaced drill tubing holding members is lowered along with the drill bit and tubing into the well bore. Latch means, operable from the surface, release spring members which act to deflect the lower tubing holding member, the tubing and drill bit into the desired orientation. The latch means may be reset from the surface, realigning the tubing holding members so that the guide means assembly may be readily withdrawn from the well bore.

REFERENCES:
patent: 1660999 (1928-02-01), MacDonell
patent: 2410753 (1946-11-01), Shinomiya
patent: 3903974 (1975-09-01), Cullen
patent: 4007797 (1977-02-01), Jeter

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