Reinforcement element for an unbonded flexible pipe
AssigneeNational Oilwell Varco Denmark I/S
InventorKristian Glejbol
Life of this patent
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Abstract
The invention relates to an elongate reinforcement element for reinforcing an unbonded flexible pipe, a method of producing the elongate reinforcement element and an unbonded flexible pipe comprising the elongate reinforcement element. The reinforcement element comprises a plurality of elongate armor strips and an elongate support element comprising a channel, wherein the plurality of elongate armor strips are arranged in the channel of the elongate support element. Preferably the elongate armor strips are arranged to be superimposed in the channel and the plurality of superimposed elongate armor strips are displaceable in relation to each other upon bending of the elongate reinforcement element.
Claims24
An elongate reinforcement element for reinforcing an unbonded flexible pipe, the reinforcement element comprises a plurality of elongate armor strips and an elongate support element comprising an elongate body, a channel defined by the elongate body, and an opening through a side of the elongate body that extends longitudinally along a side of the channel, wherein the plurality of elongate armor strips are arranged to be superimposed in the channel of the elongate support element, and wherein the plurality of superimposed elongate armor strips are displaceable in relation to each other upon bending of the elongate reinforcement element.
An unbonded flexible pipe comprising an innermost sealing sheath defining a bore and a length axis of the pipe and at least one armor layer comprising at least one helically wound elongate reinforcement element comprising a plurality of superimposed elongate armor strips and an elongate support element comprising an elongate body, a channel defined by the elongate body, and an opening through a side of the elongate body that extends longitudinally along a side of the channel, wherein the plurality of elongate armor strips are arranged in the channel of the elongate support element, and wherein the plurality of superimposed elongate armor strips are displaceable in relation to each other upon bending of the elongate reinforcement element.
Dependencies are inferred from the claim text.