公开(公告)号：US11155013B2

公开(公告)日：2021-10-26

申请号：US15518544

申请日：2015-10-14

Applicant: SHAWCOR LTD.

Inventor： Adam Wright ,  Ole Thomas Ustad ,  Magne Skinstad

IPC: B29C45/14 ,  F16L58/18 ,  F16L13/02 ,  F16L58/10 ,  B29K23/00 ,  B29L23/00

Abstract: A method of coating a field joint, pipe sections for forming a coated field joint, and a coated field joint formed thereby. First and second angular cut backs are provided in the parent coating of each pipe section. The first angular cut back is at an angle of about 30°±5° relative to the longitudinal axis of the field joint, and the second angular cut back is positioned further from the field joint than the first angular cut back. The first and second angular cut backs result in the parent coating having a stepped profile, a step in the stepped profile between the first and second angular cut backs, the is substantially parallel to the longitudinal axis of the field joint and is free of indentations. The field joint coating is injection moulded to have an upstand that is less than or equal to about 5 mm.

公开(公告)号：US11685090B2

公开(公告)日：2023-06-27

申请号：US17510564

申请日：2021-10-26

Applicant: SHAWCOR LTD.

Inventor： Adam Wright ,  Ole Thomas Ustad ,  Magne Skinstad

IPC: B29C45/14 ,  B29L23/00 ,  B29K23/00

CPC classification number: B29C45/14614 ,  B29C45/14336 ,  B29C45/14491 ,  B29C2045/14868 ,  B29K2023/12 ,  B29L2023/22

Abstract: A method of coating a field joint, pipe sections for forming a coated field joint, and a coated field joint formed thereby. First and second angular cut backs are provided in the parent coating of each pipe section. The first angular cut back is at an angle of about 30°+−0.5° relative to the longitudinal axis of the field joint, and the second angular cut back is positioned further from the field joint than the first angular cut back. The first and second angular cut backs result in the parent coating having a stepped profile, a step in the stepped profile between the first and second angular cut backs, the step is substantially parallel to the longitudinal axis of the field joint and is often substantially free of indentations. The field joint coating may be injection moulded to have an upstand that is less than or equal to about 5 mm.

公开(公告)号：US10105885B2

公开(公告)日：2018-10-23

申请号：US15354245

申请日：2016-11-17

Applicant: SHAWCOR LTD.

Inventor： Adam Robert Wright ,  Ole Thomas Ustad ,  Suresh Choudhary

IPC: B29C45/14 ,  F16L58/18 ,  F16L59/20 ,  B29C45/16 ,  B29C65/00 ,  B29K23/00 ,  B29K63/00 ,  B29K75/00 ,  B29K105/20 ,  B29L23/00

Abstract: A method of coating a field joint and a coated field joint formed thereby. The field joint coating includes a first thermal insulation material injection molded over the uncoated field joint to form a first layer, and a second thermal insulation material injection molded over the first layer to form a second layer. The second material has a greater flexibility than the first material and a lower maximum operating temperature than the first material. In certain embodiments, the second material forms a significant part of the volume of the field joint coating.

公开(公告)号：US20170066165A1

公开(公告)日：2017-03-09

申请号：US15354245

申请日：2016-11-17

Applicant: SHAWCOR LTD.

Inventor： Adam Robert Wright ,  Ole Thomas Ustad

IPC: B29C45/14 ,  F16L58/18 ,  B29C65/00 ,  F16L59/20

CPC classification number: B29C45/14614 ,  B29C45/14491 ,  B29C45/14598 ,  B29C45/1671 ,  B29C45/1676 ,  B29C66/5221 ,  B29K2023/12 ,  B29K2063/00 ,  B29K2075/00 ,  B29K2105/20 ,  B29K2995/0015 ,  B29K2995/0078 ,  B29L2023/22 ,  F16L58/181 ,  F16L59/20

Abstract: A method of coating a field joint and a coated field joint formed thereby. The field joint coating includes a first thermal insulation material injection molded over the uncoated field joint to form a first layer, and a second thermal insulation material injection molded over the first layer to form a second layer. The second material has a greater flexibility than the first material and a lower maximum operating temperature than the first material. In certain embodiments, the second material forms a significant part of the volume of the field joint coating.

Abstract translation: 由此形成的场接头和涂覆的场接头的涂覆方法。 场接合涂层包括在未涂覆的场接头上注射成型以形成第一层的第一绝热材料和在第一层上注射成型以形成第二层的第二绝热材料。 第二种材料比第一种材料具有更大的灵活性和比第一种材料更低的最大工作温度。 在某些实施方案中，第二种材料形成场接合涂层体积的重要部分。