Patent ID: 10494888

Abstract:
A wellhead connection assembly is provided with a landing mandrel, a casing head, and a clamp ring. The landing mandrel and the casing head have mirrored annular grooves formed at an upper end and a lower end, respectively. The annular grooves form an upper flange on the landing mandrel and a lower flange on the casing head. The clamp ring is provided with at least two ring segments; each having a groove formed on an inner surface that matches the profile of the upper flange and the lower flange. The first end of one of the ring segments is connected to the second end of another one of the ring segments in a way that the clamp ring is operable between a non-tightened condition wherein the casing head is rotatable relative to the landing mandrel and a tightened condition to fix the casing head to the landing mandrel.