CORRUGATED ENERGIZING RING FOR USE WITH A SPLIT LOCKDOWN RING

摘要

A wellhead assembly includes first and second wellhead members. An annular lock groove is located on an inner or an outer diameter surface of the first wellhead member. An annular lock ring is supported on an annular shoulder of the second wellhead member and is radially moveable between an unset position and a set position where a locking profile of the annular lock ring engages the annular lock groove. The second wellhead member is positioned concentrically with the first wellhead member, defining an annulus between the first and second wellhead members. An energizing ring is positioned in the annulus and axially movable between an unengaged position and an engaged position. The energizing ring has an engaging portion with a corrugated shape in cross section that is interference fit between the annular lock ring and the second wellhead member when the energizing ring is in the engaged position.

主权项

1. A wellhead assembly comprising:
a first wellhead member, the first wellhead member having a first bore with a central axis; an annular lock groove located on one of an inner diameter surface and an outer diameter surface of the first wellhead member; an annular lock ring supported on an annular shoulder of a second wellhead member, the annular lock ring being radially moveable between an unset position and a set position where a locking profile of the annular lock ring engages the annular lock groove, wherein the second wellhead member is positioned concentrically with the first wellhead member around the central axis, defining an annulus between the first wellhead member and the second wellhead member; and an energizing ring positioned in the annulus, the energizing ring being axially movable between an unengaged position and an engaged position, the energizing ring having an engaging portion with a corrugated shape in cross section that is interference fit between the annular lock ring and the second wellhead member when the energizing ring is in the engaged position.