A flexible armoured pipe with a retaining layer of metal elongate strip
AssigneeNational Oilwell Varco Denmark I/S
InventorsKarl-Johan Lolk Westhoff, Jon Moller Andersen
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Abstract
The present invention relates to a flexible armoured pipe having a centre axis and including an internal pressure sheath and an outer sheath, where the radial distance between the internal pressure sheath and the outer sheath defines an annulus. The annulus includes at least one tensile armour layer surrounded by at least one retaining layer constituted by an elongate metallic strip wound around the at least one tensile armour with a winding angle of at least 65° in respect of the centre axis.
Claims23
A flexible armoured pipe having a centre axis and comprising an internal pressure sheath and an outer sheath, the radial distance between said internal pressure sheath and said outer sheath defining an annulus, said annulus comprises at least one tensile armour layer surrounded by at least one retaining layer constituted by an elongate metallic strip wound around the at least one tensile armour with an winding angle of at least 65° in respect of the centre axis.
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Dependencies are inferred from the claim text.