Pipe fitting
AssigneesGE Oil & Gas UK Limited, Ticona LLC
InventorsDirk Raudies, Graeme Bulmer
Life of this patent
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Abstract
An apparatus and method are disclosed relating to a multi-layer flexible pipe for conveying a target fluid. The pipe includes a core layer arranged to provide an inner bore along which a fluid can flow and at least one barrier layer having a tensile elongation at yield of greater than 5% at a temperature of 23° C.
Claims31
A multi-layer flexible pipe for conveying a target fluid such as oil or gas or other such fluid under the sea, comprising:
- a metal carcass layer arranged to provide an inner bore along which a fluid can flow;
- at least one barrier layer extruded in a tubular shape directly onto the outside of the metal carcass layer;
- a hoop strength layer, a tensile strength layer and an outer fluid barrier layer provided radially outwards of the barrier layer, wherein said barrier layer comprises polyphenylenesulphide (PPS), and wherein said barrier layer comprises a blend of PPS with a flexibilising component;
- wherein the barrier layer has a tensile elongation at yield of greater than 5% at a temperature of 23° C.
A multi-layer flexible pipe for conveying a target fluid such as oil or gas or other such fluid under the sea, comprising:
- a metal core layer arranged to provide an inner bore along which a fluid can flow;
- and
- at least one barrier layer for withstanding temperatures greater than 150° C. continuously for more than twenty years;
- said barrier layer being extruded in a tubular shape directly onto the outside of the metal core layer;
- a hoop strength layer, a tensile strength layer and an outer fluid barrier layer provided radially outwards of the barrier layer, wherein said barrier layer comprises polyphenylenesulphide (PPS), and wherein said barrier layer comprises a blend of PPS with a flexibilising component;
- wherein the barrier layer has a tensile elongation at yield of greater than 5% at a temperature of 23° C.
A method for providing a multi-layer flexible pipe for conveying a target fluid such as oil or gas or other such fluid under the sea, comprising the steps of:
- providing a metal carcass layer having an inner bore along which a target fluid can flow;
- providing at least one barrier layer extruded in a tubular shape directly onto the outside of the metal carcass layer;
- and
- providing a hoop strength layer, a tensile strength layer and an outer fluid barrier layer radially outwards of the barrier layer, wherein
- said barrier layer comprises polyphenylenesulphide (PPS), and wherein said barrier layer comprises a blend of PPS with a flexibilising component;
- wherein the barrier layer has a tensile elongation at yield of greater than 5% at a temperature of 23° C.
Dependencies are inferred from the claim text.