Patent ID: 9175551
Filing Date: 2015-11-03
Classification: E21B

Abstract:
1. An apparatus adapted to be operably coupled to a subsea blowout preventer, the apparatus comprising: a first tubular member defining a first internal passage adapted to receive a casing, the first tubular member comprising: a counterbore formed in the second end portion of the first tubular member and coaxial with the first internal passage, wherein the first internal shoulder of the first tubular member is defined by the counterbore; a sealing assembly disposed in the counterbore, wherein the sealing assembly defines an exterior side and an interior side spaced radially inward from the exterior side, wherein the sealing assembly comprises a sealing element, and wherein a portion of the sealing element is located at the interior side of the sealing assembly; and a second tubular member defining a second internal passage, the second tubular member extending within the first internal passage, wherein the second tubular member has: wherein the sealing assembly extends radially between the first and second tubular members when the second tubular member is in the first axial position.