Patent ID: 6955357
Filing Date: 2005-10-18
Classification: E21B

Abstract:
1. A variable bore packer used in a ram-type blowout preventer for oil and gas drilling operations, comprising: a packer member molded of elastomeric material having a central semi-elliptical opening sized to fit closely about a tubular member upon closure of said blowout preventer; a plurality of packer inserts molded within said elastomeric material to form an insert array having a central semi-circular opening; said packer member and said insert array being molded into a unitary structure allowing said insert array to move and seat against different diameter tubular members to prevent extrusion of said elastomeric material between said packer inserts and the tubular member; said central semi-elliptical opening of said packer member and said central semi-circular opening of said insert array having a common axis; and, said unitary structure is molded to form a pair of side block seals integral with said packer member.