公开(公告)号：WO2022008728A1

公开(公告)日：2022-01-13

申请号：PCT/EP2021/069191

申请日：2021-07-09

Applicant: NATIONAL OILWELL VARCO DENMARK I/S

Inventor： KOCH, Lasse Tang ,  KRISTIANSEN, Mikael ,  CHRISTIANSEN, Benny ,  HANSEN, Steen Hjorth

IPC: B21C37/12

Abstract: The invention relates to a method and a system for manufacturing a carcass (1) for a flexible pipe. The carcass is provided by shaping and folding at least one metal strip (2) to form interlocking windings resulting in a tubular carcass extending along a carcass axis (8). A first force (F1) is then applied to at least a first region (9) of the carcass, the first force having a first force component parallel to the carcass axis, so that the pitch (P) of the windings is decreased to be within a first pitch value range. Subsequently, a second force (F2) is applied to at least a second region (10) of the carcass where the pitch of the windings is within the first pitch value range. The second force has a second force component parallel to the carcass axis and is applied so that the pitch of the windings is increased to be within a second pitch value range. The pitch within the second pitch value range is larger than the pitch within the first pitch value range.

公开(公告)号：WO2012155910A1

公开(公告)日：2012-11-22

申请号：PCT/DK2012/050122

申请日：2012-04-12

Applicant: NATIONAL OILWELL VARCO DENMARK I/S ,  KRISTIANSEN, Mikael

Inventor： KRISTIANSEN, Mikael

IPC: F16L11/08

CPC classification number: F16L11/082 ,  B32B1/08 ,  B32B25/10 ,  B32B2262/0269 ,  B32B2262/101 ,  B32B2262/106 ,  B32B2597/00 ,  F16L11/02 ,  F16L11/081

Abstract: The invention relates to an unbonded flexible pipe for offshore applications comprising an internal sealing sheath and at least one armoring layer comprising at least one helically wound fibre containing elongate armoring element, wherein the fibre containing elongate armoring element comprises polymer material, and at least about 5 % by weight of polypropylene fibers.

Abstract translation: 本发明涉及一种用于海上应用的无粘合柔性管，其包括内部密封护套和至少一个包含至少一个包含细长铠装元件的螺旋缠绕纤维的铠装层，其中包含细长铠装元件的纤维包含聚合物材料，并且至少约5 重量％的聚丙烯纤维。