Internal connection of tree to wellhead housing

Details Internal connection of tree to wellhead housing Internal connection of tree to wellhead housing

2005-12-27

2005-12-27

Bagnell, David (Department: 3672)

Wells

Submerged well

Connection or disconnection of submerged members remotely...

C166S368000, C166S336000, C166S337000, C166S086100

Reexamination Certificate

active

06978839

ABSTRACT:
A subsea wellhead assembly has a tree that connects internally to the bore of wellhead housing. The tree has a lower end that has a lock member that is moved radially outward into engagement with a profile in the bore of the wellhead housing. The tree is a monobore, having a production passage but no tubing annulus passage extending through it. The tubing hanger has a tubing annulus passage and a production passage. A valve is mounted in the tubing hanger for controlling flow through the tubing annulus passage.

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