公开(公告)号：US20180038168A1

公开(公告)日：2018-02-08

申请号：US15555296

申请日：2016-03-03

Applicant: SAIPEM S.A.

Inventor： Giulio FATICA ,  Gianmarco ROTA ,  Roberto PALLADINI

IPC: E21B17/01 ,  F16L1/26 ,  F16L1/15 ,  E21B19/00 ,  E21B43/01

CPC classification number: E21B17/012 ,  E02B2017/0095 ,  E21B19/002 ,  E21B43/01 ,  F16L1/15 ,  F16L1/24 ,  F16L1/26

Abstract: An installation of bottom-to-surface connections of at least two undersea pipes (11-1, 11-2) resting on the sea bottom (10), and a rigid pipe (1-1, 1-2) constituted by a vertical riser having its bottom end (1a) fastened to a base (9-1, 9-2) at the sea bottom (10), and having its top end (1b) tensioned by an immersed float (4-1, 4-2); and a flexible connection pipe (2-1, 2-2) providing the connection between a common floating support (12) and the top end (1b) of the vertical riser via a junction device (3-1, 3-2; wherein two hybrid towers are connected together by at least one rigid separator bar (5) having a length not less than the diameter of the larger-diameter float.