Patent ID: 7028777

Claim:
A running tool and lockdown sleeve assembly for axially fixing upward movement of a tubular hanger with respect to a subsea wellhead housing, the tubular hanger connected to a tubular string extending downward from the subsea wellhead housing into the well, the subsea wellhead housing including an outer latching profile, the assembly comprising: the running tool including (a) a tool latching mechanism for axially connecting the running tool to the outer latching profile on the subsea wellhead housing, (b) a tool force applicator for exerting a downward setting force on a seal after the tool latching mechanism connects the tool to the subsea wellhead housing, and (c) a sleeve latching applicator for moving a sleeve latching mechanism; a lockdown sleeve having a generally cylindrical outer surface and a central bore, the sleeve latching mechanism moveable in response to the sleeve latching applicator for axially connecting the lockdown sleeve to an internal profile in the subsea wellhead housing thereby fixing upward movement of the tubing hanger with respect to the wellhead housing; and the seal sealing between the lockdown sleeve and one of the tubular hanger and the wellhead housing in response to the downward force.