Pipe assembly and flow assurance system
AssigneeVetco Gray Scandinavia AS
InventorOdd Marius Rosvold
Life of this patent
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Abstract
A pipe assembly comprising an outer pipe in surrounding relation about an inner pipe, wherein the inner pipe is suspended in free inner ends of legs extended in an annular space that is formed between the outer and inner pipes, the legs reaching radially towards the inner pipe from an inner periphery of the outer pipe. At least one of the legs carries in its inner end a support foot that is formed with a recess facing towards the inner pipe. The recess forms a tunnel that is defined through an outer periphery of the inner pipe and opposite tunnel walls that reach from the leg to the inner pipe.
Claims13
A pipe assembly comprising:
- an outer pipe in surrounding relation about an inner pipe, wherein the inner pipe is suspended in free inner ends of legs extended in an annular space that is formed between the outer and the inner pipes, the legs reaching radially towards the inner pipe from an inner periphery of the outer pipe, wherein at least one leg of the legs in its inner end carries a support foot that is formed with a recess facing towards the inner pipe, and wherein the recess forms a tunnel that is defined through an outer periphery of the inner pipe and opposite tunnel walls that reach from the at least one leg to the inner pipe.
A flow assurance system configured for wax and hydrate control through cooling and heating of a hydrocarbon production fluid, the flow assurance system comprising:
- a pipe assembly section configured to transport the hydrocarbon production fluid, the pipe assembly section comprising:
- a set of individual outer pipes of limited lengths arranged one after the other in the flow direction of the hydrocarbon fluid and in surrounding relation about an inner pipe of continuous non-specified length, wherein the outer pipes are in flow communication with a pump configured to flush sea water through the outer pipes such that in every other outer pipe the sea water is flushed in a direction opposite the flow direction of the hydrocarbon product fluid through the inner pipe;
- and
- electric heater cables housed in tunnels isolated from the sea water flow, and connectable to a common power source.
Dependencies are inferred from the claim text.