Tool for controlling rotation of a bottom hole assembly with...

Details Tool for controlling rotation of a bottom hole assembly with... Tool for controlling rotation of a bottom hole assembly with...

2007-12-25

2007-12-25

Neuder, William P (Department: 3672)

Boring or penetrating the earth

Processes

Boring curved or redirected bores

C175S074000

Reexamination Certificate

active

11140172

ABSTRACT:
A tool for controlling rotation of a bottom hole assembly with respect to a drillstring has a mandrell with a longitudinal groove and a circumferential groove extending therearound and in communication with the longitudinal groove, a locking element extending around and over at least a portion of the grooves, and an actuator cooperative with the locking element for selectively moving the locking element such that locking member extending from the locking element engages either the longitudinal groove ro the circumferential groove relative to a fluid pressure in the drillstring.

REFERENCES:
patent: 4641717 (1987-02-01), Eppink
patent: 4932482 (1990-06-01), DeLucia
patent: 4962818 (1990-10-01), DeLucia
patent: 5022471 (1991-06-01), Maurer et al.
patent: 5094305 (1992-03-01), Wenzel
patent: 5099931 (1992-03-01), Krueger et al.
patent: 5458208 (1995-10-01), Clarke
patent: 2004/0231893 (2004-11-01), Kent
patent: 1235834 (1967-03-01), None
patent: 829843 (1969-05-01), None
patent: 832016 (1978-11-01), None

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