Patent ID: 7416020
Filing Date: 2008-08-26
Classification: E21B

Abstract:
1. A wellhead assembly comprising: a casing; a first tubular member over the casing; a first tubular member flange extending from the first tubular member; a generally elongate annular member suspended in the first tubular member, said annular member having a first end portion extending above the first tubular member and a second end portion below the first end portion; a second flange extending from the elongate annular member; a plurality of fasteners fastening the second flange to the first tubular member flange; a hanger within the casing, wherein a seal is interposed between the second end portion and the hanger; and a production tubular member aligned with the elongate annular member, wherein an axial force acting on the generally elongate annular member will be reacted in both the first tubular member flange and the second flange, wherein the hanger comprises an inner surface, wherein the seal is interposed between the inner surface of the hanger and an outer surface of the second end portion of the elongate annular member.