Patent ID: 7121345

Claim:
In combination with a subsea completion system which includes a subsea wellhead, a production member that is connected to the wellhead and a tubing hanger that is supported within a central bore in the production member, the improvement comprising a tubing hanger lockdown device which comprises: a lockdown port which extends generally laterally through the production member to the central bore; at least one lockdown member which includes a stem portion that is positioned in the lockdown port, a base portion that is attached to or formed integrally with a first end of the stem portion, and a lockdown profile that is attached to or formed integrally with a second end of the stem portion; an actuator shaft which is rotatably supported relative to the production member and which includes a first end that comprises a tool profile and a second end that is threaded to the base portion; wherein the stem portion is generally restricted from rotating axially within the lockdown port; and wherein rotation of the actuator shaft moves the stem portion axially through the lockdown port and brings the lockdown profile into engagement with a corresponding locking profile on the tubing hanger to thereby secure the tubing hanger in the central bore.