Subsea umbilical
AssigneeTechnip France
InventorsAlan Deighton, Joe Siu Kit Wong
Life of this patent
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Abstract
An umbilical for use in the offshore production of hydrocarbons, the umbilical comprising a plurality of functional elements contained within an outer sheath, at least one of said functional elements comprising a multicore electric cable, said multicore electric cable comprising a plurality of insulated electric conductors electrically insulated from each other and assembled together in a helical or S/Z manner, said multicore electric cable further comprising a protective polymer sheath surrounding said plurality of insulated electric conductors, said multicore electric cable further comprising a tubular metallic layer located inside said protective polymer sheath and surrounding said plurality of insulated electric conductors.
Claims16
A subsea umbilical configured for use in offshore production of hydrocarbons, the umbilical comprising:
- an outer sheath;
- a plurality of functional elements contained within the outer sheath, said functional elements comprising a multicore electric cable and a hose that transports fluid;
- said multicore electric cable comprising:
- a plurality of insulated electric conductors electrically insulated from each other and assembled together in a helical or S/Z manner,
- a protective polymer sheath surrounding said plurality of insulated electric conductors, and
- a tubular metallic layer located inside said protective polymer sheath and surrounding said plurality of insulated electric conductors, said tubular metallic layer being a barrier against diffusion of hydrogen from an outside to an inside of said multicore electric cable,
- wherein the tubular metallic layer is made of a metal strip helically wrapped with overlap around the plurality of insulated electric conductors, and
- wherein the hose is positioned outside the protective polymer sheath.
A subsea umbilical configured for use in offshore production of hydrocarbons, the umbilical comprising:
- an outer sheath;
- a plurality of functional elements contained within the outer sheath, said functional elements comprising a multicore electric cable and a hose that transports fluid;
- said multicore electric cable comprising:
- a plurality of insulated electric conductors electrically insulated from each other and assembled together in a helical or S/Z manner,
- a protective polymer sheath surrounding said plurality of insulated electric conductors, and
- a tubular metallic layer located inside said protective polymer sheath and surrounding said plurality of insulated electric conductors, said tubular metallic layer being a barrier against diffusion of hydrogen from an outside to an inside of said multicore electric cable,
- wherein the tubular metallic layer is made of a metal strip longitudinally folded with overlap around the plurality of insulated electric conductors, and
- wherein the hose is positioned outside the protective polymer sheath.
Dependencies are inferred from the claim text.