Tubing hanger and running tool with a preloaded lockdown

Details Tubing hanger and running tool with a preloaded lockdown Tubing hanger and running tool with a preloaded lockdown

E - Fixed Constructions

21

B

E21B 23/00 (2006.01) E21B 33/00 (2006.01) E21B 33/043 (2006.01)

Patent

CA 2071609

Abstract of the Disclosure An improved subsea tubing hanger having a body with an external shoulder for landing on a seat within a subsea wellhead housing, locking ring carried on the hanger to engage a interior recess of the wellhead housing, with a actuator ring for setting the locking ring. A preloading mechanism includes a extendible ring cooperating with the locking ring to prevent any movement of the tubing hanger when engaged and operable by torque supplied by the running tool. The improved tubing hanger running tool includes a body secured to the tubing hanger by conventional latching ring with a rotatable outer sleeve having an interior helical groove. A piston positioned on the running tool body and operated by hydraulic fluid pressure has an exterior pin which coacts with the helical groove to provide torque to the actuating ring and preloading ring of the tubing hanger.

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