Insulating inserts for field joints of coated rigid pipelines
AssigneeSubsea 7 Lijmited
InventorsMike Gordon, Sylvain Popineau, Philippe Benoit Jacques Hoffmann
Life of this patent
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Abstract
An insulating insert is positioned around a field joint of a pipeline to insulate the field joint. The insert comprises a longitudinal series of annular or part-annular filler segments of insulating material, curved about a longitudinal axis, that are each joined to one or more adjacent segments of the series by at least one link. The links may be webs, rods or articulated links. The links are flexible relative to the segments to facilitate bending of the insert along its length by enabling relative angular displacement between adjacent segments of the series.
Claims17
A rigid pipeline comprising an insulating insert that is positioned around a field joint of a pipeline to insulate the field joint, wherein the insert is positioned over a sealing sleeve applied over the field joint, which sleeve bridges a longitudinal gap between truncated parent coatings of pipe joints joined at the field joint, and wherein:
- the insert comprises a longitudinal series of annular or part-annular segments of insulating material, curved about a longitudinal axis, that are each joined to one or more adjacent segments of the series by at least one link;
- and
- the at least one link is flexible relative to the segments to facilitate bending of the insert along a length of the insert by enabling relative angular displacement between adjacent segments of the series, wherein the at least one link comprises one or more flexible rods extending longitudinally between adjacent segments of the series.
A rigid pipeline comprising an insulating insert that i positioned around a field joint of a pipeline to insulate the field joint, wherein the insert is positioned over a sealing sleeve applied over the field joint, which sleeve bridges a lonitudinal gap between truncated parent coatings of pipe joints joined at the field joint, and wherein:
- the insert comprises a longitudinal series of annular or part-annular segments of insulating material, curved about a longitudinal axis, that are each joined to one or more adjacent segments of the series by at least one link;
- and
- the at least one link is flexible relative to the segments to facilitate bending of the insert along a length by enabling relative angular displacement between adjacent segments of the series, wherein each of the at legit one link is an articulated assembly of two or more relatively movable link components.
Dependencies are inferred from the claim text.