公开(公告)号：US12097653B2

公开(公告)日：2024-09-24

申请号：US17608450

申请日：2020-04-30

Applicant: Subsea 7 Limited

Inventor： Mark Robert Smithson ,  Graham Wood

IPC: F16L55/165 ,  B29C63/34 ,  F16L58/10

CPC classification number: B29C63/346 ,  F16L55/1654 ,  F16L58/1036

Abstract: A method of manufacturing a length of lined pipe inserts a radially contracted liner pipe into an outer host pipe. Injector needles are inserted through an end of the outer pipe into an annular gap between the pipes. Adhesive is injected between the pipes at locations inboard of the end of the outer pipe. After withdrawing the injectors, at least a portion of the liner pipe is expanded to close the gap and to bond the pipes together via the injected adhesive. Shims can be inserted into the gap between the pipes. A portion of the liner pipe inboard of the shims can be expanded radially while the shims constrain local radial expansion of an outboard portion of the liner pipe to maintain the gap for accommodating the injectors. Withdrawing the shims after injecting the adhesive allows radial expansion of the outboard portion to close the gap between the pipes.

公开(公告)号：US20220212395A1

公开(公告)日：2022-07-07

申请号：US17608450

申请日：2020-04-30

Applicant: Subsea 7 Limited

Inventor： Mark Robert Smithson ,  Graham Wood

IPC: B29C63/34 ,  F16L58/10 ,  F16L55/165

Abstract: A method of manufacturing a length of lined pipe comprises inserting a radially-contracted liner pipe into an outer host pipe. Injector needles are inserted through an end of the outer pipe into an annular gap between the pipes. Adhesive is injected between the pipes at locations inboard of the end of the outer pipe. After withdrawing the injectors, at least a portion of the liner pipe is expanded to close the gap and to bond the pipes together via the injected adhesive. Shims may be inserted into the gap between the pipes. A portion of the liner pipe inboard of the shims may be expanded radially while the shims constrain local radial expansion of an outboard portion of the liner pipe to maintain the gap for accommodating the injectors. Withdrawing the shims after injecting the adhesive allows radial expansion of the outboard portion to close the gap between the pipes.