Drill string deflecting apparatus

Details Drill string deflecting apparatus Drill string deflecting apparatus

2008-02-27

2008-11-04

Gay, Jennifer H (Department: 3676)

Boring or penetrating the earth

Means traveling with tool to constrain tool to bore along...

Sectional guide or shaft having means to lock sections in...

C175S101000

Reexamination Certificate

active

07445059

ABSTRACT:
Manipulation of the rate of drilling fluid flow down a drill string containing the apparatus causes a drilling fluid powered linear motor, preferably a piston, to move an output shaft, hingedly attached to the general body to laterally, and selectively, deflect the longitudinal axis of the apparatus with the effect of bending an associated drill string assembly just above the drill head.

REFERENCES:
patent: 4655299 (1987-04-01), Schoeffler
patent: 4811798 (1989-03-01), Falgout
patent: 5297641 (1994-03-01), Falgout
patent: 5495900 (1996-03-01), Falgout
patent: 5673764 (1997-10-01), Falgout
patent: 5775444 (1998-07-01), Falgout
patent: 6364034 (2002-04-01), Schoeffler

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