Patent ID: 8640777
Filing Date: 2014-02-04
Classification: E21B

Abstract:
1. A bridging hanger for securing to a subsea casing hanger comprising: a tubular main body; a tubular sealing sleeve coaxial with and mounted on an exterior diameter portion of the tubular main body, the body being moveable from an upper run-in position to a lower set position relative to the sealing sleeve; an inner metal sealing surface on an inner portion of the sealing sleeve that form a metal-to-metal seal between the body and the sealing sleeve in response to the body moving to the set position; an outer metal sealing surface on an outer portion of the sealing sleeve that forms a metal-to-metal seal between the sealing sleeve and the casing hanger in response to the body moving to the set position; a first locking ring carried by the sealing sleeve and adapted to engage a profile within an interior of the casing hanger in response to movement of the main body relative to the first locking ring from the run-in to the set position; and a second locking ring carried by the sealing sleeve to lock the tubular main body in the set position in response to movement of the main body relative to the second locking ring from the run-in to the set position.