Patent ID: 6581691
Filing Date: 2003-06-24
Classification: E21B

Abstract:
A wellhead assembly, comprising:a wellhead member having a bore and a landing shoulder located therein; a tubing hanger adapted to be connected to a string of tubing; a landing adapter mounted to the tubing hanger for axial movement relative to the tubing hanger from an extended position, while running the tubing hanger into the wellhead member, to a retracted position, the landing adapter having a shoulder that lands on the landing shoulder in the bore, the shoulder having an outer diameter that is at least equal to the outer diameter of all other portions of the landing adapter, the landing adapter having an inner portion that sealingly and slidingly engages the tubing hanger, defining a fluid chamber; and a relief passage for the fluid chamber, that relieves fluid pressure in the fluid chamber after the shoulder of the landing adapter lands on the landing shoulder, causing the tubing hanger to move downward relative to the landing adapter until the landing adapter reaches the retracted position.