Abstract: An adapter for connecting a wet Christmas tree to an eccentric adapter production base. The adapter includes a hydraulic connector, a guide bushing which comprises penetrators for actuation of a dual sealing valve, hydraulic and electric plates with command and monitoring functions of resident equipment, two slide AI valves which provide a testable barrier of an annulus, an ROV panel which commands hydraulic functions, a top interface which interacts with the wet Christmas tree, a bottom interface which interfaces and/or communicates with the eccentric adapter production base and with a tubing hanger, a flow line connector with an integrated flow line mandrel, and a locking system with a sealing lip arranged inside the bottom interface. The top interface has a top guide funnel-shaped structure. The bottom interface has a structure of a connector and the guide bushing comprising the penetrators. The locking system interfaces with the eccentric adapter production base.

Abstract: A method of connecting a tubing hanger mounted in a subsea wellhead to equipment which is external to the tubing hanger. The method includes securing the tubing hanger to an end of a drill string using a tubing hanger running tool assembly, lowering the drill string from a drilling rig so as to land the tubing hanger on or in the wellhead, running an umbilical from the sea surface to the wellhead, and connecting the umbilical to at least one conduit in the tubing hanger via the tubing hanger running tool assembly. The umbilical is unconnected to the drill string other than via the tubing hanger running tool assembly.