公开(公告)号：US20240229577A1

公开(公告)日：2024-07-11

申请号：US18560351

申请日：2022-04-07

Applicant: SAIPEM S.P.A.

Inventor： Sergio GARCIA SIMOES ,  Roberto DI SILVESTRO ,  Otavio BORGES SERTA

IPC: E21B19/00 ,  E21B17/08 ,  E21B43/01

CPC classification number: E21B19/004 ,  E21B17/085 ,  E21B43/0107

Abstract: A riser termination connects a steel riser duct to an I-tube or J-tube connecting interface of a floating unit, and includes an upper hang off portion, lower coupling adapter, steel termination conduit having an upper conduit end connected to the upper hang off portion and a lower conduit end connected to the steel riser duct. The termination conduit extends axially slidable through the coupling adapter. A circular cylindrical bearing seat is formed inside the coupling adapter and defines a bearing seat diameter, a bearing body having a bearing body diameter and protruding outward from the termination conduit inside the bearing seat. The bearing body diameter is smaller than the bearing seat diameter. A gap between the bearing body and the bearing seat allows relative sliding and rotation. The termination conduit includes a variable cross-section conduit portion having a diameter and wall thickness decreasing from the bearing body.