Completion suspension valve system

Details Completion suspension valve system Completion suspension valve system

2005-01-21

2011-11-29

Beach, Thomas (Department: 3674)

Wells

Submerged well

Connection or disconnection of submerged members remotely...

C166S339000, C166S373000, C166S386000, C166S332300, C251S315010, C251S315160, C251S062000

Reexamination Certificate

active

08066075

ABSTRACT:
A completion suspension valve system is described which allows a well to be suspended and desuspended remotely without a dual bore riser to the surface. This is achieved by incorporating a remotely actuatable valve into the production bore of a tubing hanger. The valve is hydraulically operable and may be controlled via the tubing hanger running tool or via the xmas tree. The valve can be closed and tested after the tubing hanger has been installed, thereby isolating the well. The dual bore riser and running tool are retrievable and the MODU type vessel is then free to continue drilling and completion operations elsewhere. The xmas tree can therefore be deployed from a workclass supply boat instead of a MODU type vessel.

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