Patent ID: 7520322
Filing Date: 2009-04-21
Classification: E21B

Abstract:
1. A wellhead assembly comprising: a casing; a first tubular member extending above the casing; a hanger within the first tubular member, the hanger comprising a first end opposite a second end and an annular wall extending there-between; a second tubular member extending above the first tubular member and interfacing with said hanger annular wall; a generally elongate annular member in the second tubular member, said annular member having a first end portion extending above a second end portion, wherein a seal is interposed between the second end portion of the elongate annular member and the hanger annular wall forming a seal between the second end portion of the elongate annular member and the hanger; a flange extending from the second tubular member, wherein an axial load acting on the generally elongate annular member is reacted through said flange; and a production tubular member aligned with the elongate annular member.