Tubing rotator

Details Tubing rotator Tubing rotator

E - Fixed Constructions

21

B

E21B 33/04 (2006.01)

Patent

CA 2541142

A tubing rotator 10 rotatably suspending a tubing string TS in a well having a wellhead W includes a tubing hanger 12 for supporting the tubing string, and a mandrel 14 having a bore therein and connected to the tubing string. A coupling sleeve 30 rotatably connects the mandrel to the rotator drive shaft 16, and transfers rotational energy from the drive shaft to the mandrel while allowing for the disengagement of the coupling sleeve from the mandrel in a direction substantially parallel to a longitudinal axis of the mandrel. The coupling sleeve has interior surfaces 70 for mating with an exterior surfaces 72 on the mandrel, with each surface having a substantially curvilinear configuration about its circumference defining a plurality of curved radially outward extending peaks and curved radially inward extending valleys.

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