Subsea trees and caps for them
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United States of America Patent
Stats
-
Dec 29, 2009
Grant Date -
Sep 4, 2008
app pub date -
Oct 17, 2006
filing date -
Nov 9, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
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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