Subsea trees and caps for them

Details Subsea trees and caps for them Subsea trees and caps for them

2006-10-17

2009-12-29

Beach, Thomas A (Department: 3671)

Wells

Submerged well

Wellhead

C166S075130, C166S341000

Reexamination Certificate

active

07637325

ABSTRACT:
A cap for a subsea tree having a re-entry hub (1) and for use with a tubing hanger (25) deployed within the tree comprises an outer sleeve (3) for fitment over the hub and an inner sleeve (19) adapted to extend within the hub. The sleeve has communication couplers (27, 37) for cooperation with the tubing hanger. Preferably the communication couplers are located at the extremity of the inner sleeve. The couplers can accommodate dummy plugs or live couplers to suit the mode of application. The inner sleeve (19) supports at least one annular seal (21, 22) which provides a barrier between the inner sleeve and the inner periphery of the hub. The outer sleeve (19) includes releasable engagement fittings (16) for securing the outer sleeve to the hub. The cap is adapted for use as a running tool.

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