Pressure armor with integral anti-collapse layer
AssigneeDeepflex Inc.
InventorsMark Douglas Kalman, Liang Yu
Life of this patent
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Abstract
There is provided a flexible pipe, the flexible pipe including a fluid barrier layer, a first pressure armor layer, a second pressure armor layer, and an anti-collapse sheath disposed between the first and second pressure armor layers. The first pressure armor layer may include a metallic interlocked anti-extrusion and hoop strength layer. The second pressure armor may include a hoop strength layer having non-interlocked helical wraps. The second pressure armor layer may include composite helical wraps.
Claims31
A tubular assembly, comprising:
- a fluid barrier layer;
- and
- a pressure armor layer, the pressure armor layer comprising:
- a first layer comprising at least one metallic layer, the first layer disposed external to the fluid barrier layer;
- and
- a second layer comprising a plurality of composite helical wraps disposed external to the first layer.
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A flexible pipe, comprising:
- a fluid barrier layer;
- a hoop strength layer comprising non-interlocked helical wraps;
- and
- an anti-extrusion layer comprising at least one metallic layer, the anti-extrusion layer disposed between the fluid barrier layer and hoop strength layer that resists extrusion of the fluid barrier layer into gaps formed between the non-interlocked helical wraps of the hoop strength layer.
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A flexible pipe, comprising:
- a fluid barrier layer;
- a first pressure armor layer;
- and
- a second pressure armor layer;
- and
- an anti-collapse sheath layer disposed between the first pressure armor layer and second pressure armor layer.
Dependencies are inferred from the claim text.