Aker Subsea as

Jarmo Kekarainen

A seal holder for retaining a sealing arrangement (), said sealing arrangement () being adapted to seal against a facing seal surface () in a bore (), said seal holder having an intermediate section () encircled by a peripheral section () arranged for carrying said seal arrangement (), wherein said intermediate section () is convex shaped towards the pressure side and is adapted to exert radial pressure on said peripheral section () in the event of exposure to pressure on its convex side. The invention also relates to a method for sealing a bore by applying an apparatus equipped at its lower end with a seal holder () retaining a sealing arrangement ().

Seal holder and method for sealing a bore

Subsea Xmas tree assembly () having a Xmas tree main bore () and a Xmas tree annulus bore (). The main bore () aligns with a tubing hanger main bore () and the Xmas tree annulus bore () communicates with a tubing hanger annulus bore (), when the Xmas tree assembly () is installed above a tubing hanger () of a subsea well. The subsea Xmas tree assembly () comprises a plug tool () adapted to install and to retrieve a plug () into and out of the tubing hanger annulus bore () when the Xmas tree assembly () is installed above the tubing hanger (). The assembly has a tool accommodation compartment () within which the plug tool () is arranged. An associated method is also described.

Subsea Xmas tree assembly and associated method

A cap having a stinger adapted to be inserted into a bore of a subsea well element. The stinger includes locking means for locking to a profile in said bore, which locking means include a plurality of locking dogs. The locking dogs exhibit a large inclination face and a small inclination face, and are adapted to be actuated in a radial direction by an actuation sleeve. The small inclination face is divided by a slot, in which slot the large inclination face is arranged. A cam is arranged on the actuation sleeve and is adapted to extend into said slot. Alternatively, the small inclination face is divided by a cam arranged on the locking dog, on which the large inclination face is arranged, which cam is adapted to extend into a slot in the actuation sleeve.

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Valbo, Sweden

Jarmo Kekarainen