Back to results
US 2024/0278485 A1Published application
Manufacture of pipelines
AssigneeSubsea 7 Limited
InventorGordon MACGREGOR
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeSubsea 7 Limited
InventorGordon MACGREGOR
Estimating the term…
A method of attaching a plurality of cables such as trace heating cables to an elongate pipeline comprises bringing together the pipeline and an elongate mat along a common longitudinal direction, wrapping the mat around at least a majority of the circumference of the pipeline, and fixing the wrapped mat to the pipeline. The mat comprises at least two longitudinally-extending cables that are supported by a pliant substrate so that when the mat is wrapped around the pipeline, the cables are positioned at respective angular positions about a longitudinal axis of the pipeline. The mat may be guided from a planar configuration on exiting a reel into a configuration that is curved about the longitudinal axis. Centraliser spacers and thermal insulation may be added around the pipeline and the wrapped mat before the assembly is inserted into an outer pipe.
-31. (canceled)
A method of attaching a plurality of cables to an elongate inner pipe of a pipe-in-pipe system, the method comprising:
A mat for installing cables along an inner pipe of a pipe-in-pipe system, the mat comprising at least two longitudinally-extending cables supported by an elongate pliant substrate that extends along a longitudinal axis and is of substantially uniform thickness across its width defined between opposed longitudinal edges, wherein the mat is wrappable in a widthwise direction to adopt a circular profile in which the longitudinal edges overlap, abut or otherwise face each other.
A pipe-in-pipe system comprising an inner pipe wrapped with an elongate mat and an outer pipe that surrounds the inner pipe and the mat, wherein the inner pipe and the mat extend along a common longitudinal direction, the mat comprises at least two longitudinally-extending cables that are supported by a pliant substrate, and the mat is wrapped around at least a majority of the circumference of the inner pipe and is fixed to the inner pipe to position the cables at respective angular positions about a longitudinal axis of the inner pipe.
Dependencies are inferred from the claim text.