公开(公告)号：US20150159775A1

公开(公告)日：2015-06-11

申请号：US14564239

申请日：2014-12-09

Applicant: ITP SA

Inventor： Christian BONIGEN ,  Christian GEERTSEN

IPC: F16L1/18 ,  B63B35/03 ,  F16L1/16 ,  F16L1/19 ,  F16L1/235

CPC classification number: F16L1/18 ,  B63B35/03 ,  F16L1/165 ,  F16L1/19 ,  F16L1/235 ,  F16L59/065 ,  F16L59/143

Abstract: The invention concerns a process and a device for laying a subsea pipeline according to the J-lay or S-lay method wherein straight sections are mounted onshore, dried and degassed then closed by plugs. The sections are loaded on a pipe-laying ship, are separated from their plugs before the welding. At the welding of each bulkhead a short pumping is operated to reduce the pressure in the part of the annulus located between the two last bulkheads and then the opening leading to the annulus are sealed.

Abstract translation: 本发明涉及一种用于根据J-lay或S-lay方式铺设海底管道的方法和装置，其中直段安装在陆上，干燥并脱气然后用塞子封闭。 这些部分装载在铺管船上，在焊接之前与其塞子分开。 在每个隔板的焊接处，进行短泵送以减小位于两个最后舱壁之间的环空部分中的压力，然后密封通向环空的开口。