Shawcor Ltd.

Agc Chemicals Americas, Inc.

Suresh Choudhary

Eileen Wan

Jan Peder Hegdal

Torgeir Sletvold

Masahide Yodogawa

Adam Wright

Ole Thomas Ustad

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.

Two-layered injection molded field joint for pipeline applications

A method for forming a high temperature field joint between two insulated pipe sections, and an insulated conduit having a low temperature field joint. The conduit comprises a steel pipe with a corrosion protection coating and a pipe insulation layer comprising a polymer composition having thermal conductivity of less than about 0.40 W/mk, and/or heat resistance to continuous operating temperatures from about 150&#xb0; C. to above about 205&#xb0; C. After a circumferential weld joint is formed between the two pipes, a first field joint insulation layer is applied over the joint area, the first field joint insulation layer comprises a polymer composition having heat resistance to continuous operating temperatures from about 150&#xb0; C. to above about 205&#xb0; C.

High temperature field joints

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Houston, TX, United States of America

Suresh Choudhary