Patent ID: 6902005

Claim:
A wellhead assembly, comprising: a tubular wellhead member in a subsea location; a tubing hanger for supporting a string of production tubing extending from the tubing hanger to a desired depth, defining a tubing annulus around the outer circumference of the tubing; a tubing hanger support member which secures the tubing hanger relative to the tubular wellhead member; a valve block located above the tubular wellhead member and having at least one valve and a valve block passage extending axially therethrough that communicates with the interior of the string of production tubing; a riser assembly in communication with the tubing, connected to an upper end of the valve block and extending to a platform at the surface of the sea for conveying production fluids flowing through the valve block passage; a conduit extending from the platform alongside the riser assembly; and a tubing annulus passage extending from the tubing annulus through the tubing hanger support member offset from the tubing hanger and in communication with the conduit.