Low torque centralizer

Details Low torque centralizer Low torque centralizer

E - Fixed Constructions

21

B

E21B 43/10 (2006.01) E21B 17/10 (2006.01)

Patent

CA 2054156

ABSTRACT OF THE DISCLOSURE An improvement to a centralizer that may reduce the torque required to rotate a casing in a borehole during primary cementing is disclosed. In a first embodiment, the improvement is adapted to a bow spring type centralizer having intermediate fixed and slidable sleeves with each sleeve circumscribed by an end band. The end bands are connected to each other by a plurality of bow springs. The improvement includes interposing a sleeve bearing between each end band and its respective intermediate sleeve. The sleeve bearings may be attached to the intermediate sleeves to permit their rotation with the casing relative to the stationary end bands and bow springs. Alternatively, the intermediate sleeves may be eliminated and the sleeve bearings interposed directly between the outer surface of the casing and inner surfaces of their respective end bands.

Affiliated with

Also associated with

Rating

Low torque centralizer does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-2076872