Subsea hanger and running tool

Details Subsea hanger and running tool Subsea hanger and running tool

E - Fixed Constructions

21

B

166/49

E21B 33/03 (2006.01) E21B 33/043 (2006.01)

Patent

CA 2017333

An improved subsea tubing hanger having a body with an external shoulder for landing on a seat within a subsea wellhead housing, locking means carried by the hanger to engage the housing to lack the hanger in landed position, which locking means includes a locking element, actuating means for setting the locking element and securing means for holding the actuating means in its locked position but being releasable responsive to sufficient upward force to sever the securing means. The improved running tool includes a body with hydraulic actuated latching means for engaging the tubing hanger and which main- tains its engagement with the tubing hanger even when hydraulic pressure is lost. The actuating means includes an area exposed to hydrostatic riser pressure with sufficient area to retain the actuating means in latched position even through the remainder of the actuating means is exposed to well bore hydrostatic head urging it out of latched position.

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