Directional drilling apparatus

Details Directional drilling apparatus Directional drilling apparatus

2007-10-30

2007-10-30

Thompson, Kenneth (Department: 3672)

Boring or penetrating the earth

Processes

Boring curved or redirected bores

C175S074000, C175S107000, C166S237000

Reexamination Certificate

active

11514539

ABSTRACT:
A drilling motor is housed in the upper portion of a housing, with a drive shaft extending through a lower portion of the housing. The two portions are coupled by bearing that has an axis of rotation that is tilted a small amount relative to the axes of both portions. The lower portion is rotationally coupled to the lower housing until a small amount of drilling fluid flow, or a preselected amount of motor torque, forces a clutch to disengage the motor, rotationally, from the lower housing. The lower portion is allowed limited rotation relative to the upper portion. At one rotational limit, the housing is in the straight configuration. At the other limit, the housing is in the deflected configuration. Conversion to the straight configuration is achieved, while drilling fluid flows, when the drill string is rotated, by formation drag, which rotates the lower portion to the straight configuration.

REFERENCES:
patent: 3586116 (1971-06-01), Tiraspolsky et al.
patent: 5048621 (1991-09-01), Bailey et al.
patent: 5232058 (1993-08-01), Morin et al.
patent: 5495900 (1996-03-01), Falgout, Sr.
patent: 6571888 (2003-06-01), Comeau et al.
patent: 6955231 (2005-10-01), Bakke

Affiliated with

Also associated with

Rating

Directional drilling apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Directional drilling apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Directional drilling apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3827225