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US 6,550,502 B2Granted
Composite tube comprising an inner casing
AssigneeInstitut Francais du Petrole
InventorPierre Odru
Life of this patent
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Abstract
A structure of a multilayer tube includes at least one layer made of a composite material (2-8) having reinforcing fibers embedded in a polymer matrix, and at least one sealing sheath (1) made of a low-permeability polymer material. The tube has a metal carcass (9) interior to the sheath. In a variant, the carcass is made of stapled steel tape (10).
Claims6
A multilayer tube comprising:
- a metal carcass;
- at least one sealing sheath made of a low-permeability polymer material provided on an outside of the metal carcass;
- and
- at least one pressure resisting layer comprising a polymer matrix provided on an outside of said at least one sealing sheath, the at least one pressure resisting layer including reinforcing fibers embedded in the polymer matrix.
1 more element
Dependencies are inferred from the claim text.