Abstract: A base plate assembly for supporting a number of tubular strings within a tubular housing comprises two base plate portions which when secured together are adapted to be supported on an upper end of the tubular housing. Each base plate portion comprises a top plate which includes an end face and a number of semicircular openings that extend from the end face. Thus, when the base plate portions are secured together, the semicircular openings align to form a number of circular bores which are each adapted to receive a corresponding tubular string. Also, the base plate portions may be disconnected and removed from the tubular housing after the tubular strings are secured in position.

Abstract: A base plate assembly for supporting a number of tubular strings within a tubular housing comprises two base plate portions which when secured together are adapted to be supported on an upper end of the tubular housing. Each base plate portion comprises a top plate which includes an end face and a number of semicircular openings that extend from the end face. Thus, when the base plate portions are secured together, the semicircular openings align to form a number of circular bores which are each adapted to receive a corresponding tubular string. Also, the base plate portions may be disconnected and removed from the tubular housing after the tubular strings are secured in position.

Abstract: A wellhead seal for establishing and maintaining a seal between a wellhead and inner pipe element. The seal is an annular elastomeric body having an inner axial surface with a generally convex central portion for pressing against the inner pipe element surrounded by the wellhead and an outer axial surface with a generally concave central portion which, in one embodiment, receives an annular energizing element to increase the sealing force between the body and casing. An annular anti-extrusion ring is provided at the inner edge of each radial end surface.