Thermal insulation of flexible pipes
First Claim
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1. Flexible pipe body for a flexible pipe for transporting production fluids such as oil, gas and water from a sub-sea location, said pipe body comprising:
- an internal pressure sheath constructed to withstand deep water environments;
at least one insulating layer comprising a mesh layer comprising a plurality of pockets;
an outer sheath constructed to withstand deep water environments; and
an insulating aerogel material disposed in a plurality of said pockets, wherein the insulating aerogel material has a thermal conductivity of 0.009 to 0.022 w/mk, and wherein the at least one insulating layer is provided between the internal pressure sheath and the outer sheath;
wherein the pipe body is configured for sub-sea use for transporting production fluids from a sub-sea location and constructed to withstand operating conditions in deep water environments.
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Abstract
A flexible pipe body and a method for manufacturing flexible pipe body is disclosed. The flexible pipe body includes an internal pressure sheath, at least one insulating layer comprising a mesh layer comprising a plurality of pockets and an outer sheath.
12 Citations
15 Claims
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1. Flexible pipe body for a flexible pipe for transporting production fluids such as oil, gas and water from a sub-sea location, said pipe body comprising:
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an internal pressure sheath constructed to withstand deep water environments; at least one insulating layer comprising a mesh layer comprising a plurality of pockets; an outer sheath constructed to withstand deep water environments; and an insulating aerogel material disposed in a plurality of said pockets, wherein the insulating aerogel material has a thermal conductivity of 0.009 to 0.022 w/mk, and wherein the at least one insulating layer is provided between the internal pressure sheath and the outer sheath; wherein the pipe body is configured for sub-sea use for transporting production fluids from a sub-sea location and constructed to withstand operating conditions in deep water environments. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of transporting a production fluid such as oil, gas and water from a sub-sea location comprising:
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providing a flexible pipe comprising an internal pressure sheath constructed to withstand deep water environments, at least one insulating layer comprising a mesh layer comprising a plurality of pockets, an outer sheath constructed to withstand deep water environments and an insulating aerogel material disposed in a plurality of said pockets, wherein the insulating aerogel material has a thermal conductivity of 0.009 to 0.022 w/mk and wherein the at least one insulating layer is provided between the internal pressure sheath and the outer sheath and wherein said mesh layer comprises a web layer comprising a plurality of blind or through holes preformed in the web; placing the flexible pipe in a sub-sea location; and transporting a fluid through the flexible pipe.
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Specification