Aker Subsea As

Bengt Dahlborg

André M Smith

Øystein Møgedal

Roar Eide

Per Bostedt

Joachim Vilhelmsson

Nick Newlands

Magnus Fjørtoft Urke

Olle Säfvenberg

The invention provides a bore protector for a tubing hanger, the bore protector is to be arranged in a tubing hanger in a spool in a subsea production Xmas tree for through tubing rotary drilling (TTRD) in an existing production well. The bore protector is distinctive in that it comprises a means to be releasably fastened in at least one of: the spool in the Xmas tree and the tubing hanger, and a wear sleeve extending down into the tubing hanger, covering the tubing hanger sealing surfaces for the tubing hanger plugs, the wear sleeve comprises a shoulder at or near an upper end, the shoulder is arranged on a below positioned seat of a main part of the bore protector, in which position the wear sleeve is releasably fastened.

Bore protector

The invention provides a valve useful as a production valve in or connected to a production tree subsea, and other similar uses subsea or topside, the valve comprises a valve element, a valve element pressure housing, an actuator, a stem and a bonnet, the actuator is via the stem operatively arranged to close or open a fluid passageway through the valve element, the bonnet enclose the stem and is connected to the valve element pressure housing and seals are arranged between the stem and the bonnet for sealing against the pressure of the valve element pressure housing. The valve is distinctive in that the valve comprises at least one seal for sealing between stem and bonnet, the seal having identical inner sealing diameter against the stem and outer sealing against a single body or element of the bonnet.

Valve stem seal arrangement

A connector assembly for connection to a tubular element. The connector assembly includes locking elements with locking profiles, movable in a locking and an unlocking direction. The locking profiles can lock with facing locking profiles of the tubular member. The locking elements can be moved in the locking direction as a result of movement of an activation sleeve in a first direction. The locking elements or the activation sleeve include guiding elements that are adapted to slide against inclined unlocking guiding surfaces of the activation sleeve or the locking elements. Movement of the activation sleeve in a second direction results in movement of the locking element in the unlocking direction. The activation sleeve has axially extending activation sleeve protrusions having spaces formed between them.

Connector assembly

Growing community of inventors

Charlottenberg, Sweden

Bengt Dahlborg