公开(公告)号：US20170356254A1

公开(公告)日：2017-12-14

申请号：US15532878

申请日：2015-12-04

Applicant: Saipem S.p.A.

Inventor： Alberto SERENA ,  Diego LAZZARIN ,  Gabriele CADEDDU

IPC: E21B17/10 ,  F16L3/205 ,  E21B33/038 ,  F16L1/12

CPC classification number: E21B17/1078 ,  E21B19/24 ,  E21B33/038 ,  E21B41/0007 ,  F16L1/123 ,  F16L3/205

Abstract: A connection assembly for engaging a tubular member underwater to restrain the tubular member from radial movement relative to the connection assembly includes a plurality of pads for engaging the tubular member at circumferentially spaced positions; and a plurality of biasing arrangements, each for biasing a respective pad radially inwardly into engagement with the tubular member; wherein each biasing arrangement includes a pre-loadable, mechanical, compressed spring arrangement for resiliently pressing its respective pad against the tubular member. The assembly need not employ any hydraulic components.