Patent ID: 6234252
Filing Date: 2001-05-22
Classification: E21B

Abstract:
A connector for tying back a riser from a platform to a subsea wellhead housing, said wellhead housing having external grooves thereon, comprising:a connector body adapted to be joined to said riser for landing on an upper end of said wellhead housing;a connector housing depending from said connector body for insertion over said wellhead housing;a plurality of dogs moveably carried by said connector housing and adapted to mate with and lock in said external grooves;a cam ring carried moveably within said connector housing to force said dogs inward into engagement with said external grooves; anda transfer member moveably carried in said connector housing in engagement with said dogs and said connector housing for transferring axial loads between said connector housing and said wellhead housing, the transfer member having an upper end in engagement with a lower end of each of said dogs and a lower end pivotally engaging said connector housing.