Induction heating for short segments of pipeline systems
First Claim
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1. An electrically heated subsea pipeline system, comprising:
- a first segment of pipeline, the first segment being a single heated insulated pipeline and having a wall, wherein the pipeline is heated by a flow of electrical current in the wall of the pipeline;
a buffer zone of pipeline, the buffer zone being adjacent the segment of single heated insulated pipeline;
a jumper, the jumper having a first end and a second end, the first end being fluidly connected to the buffer zone; and
an induction heating coil around the jumper.
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Abstract
An subsea pipeline system having jumpers (short segments connecting equipment or wells and the main segments) that can be electrically heated is provided. The jumpers are heated by induction coils placed around the jumpers, either before placing the jumpers subsea or afterward. Electrical power may be supplied to the induction coils from current flow in the walls of the heated segment of pipeline or from an external source such as from a subsea transformer or ROV.
72 Citations
19 Claims
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1. An electrically heated subsea pipeline system, comprising:
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a first segment of pipeline, the first segment being a single heated insulated pipeline and having a wall, wherein the pipeline is heated by a flow of electrical current in the wall of the pipeline;
a buffer zone of pipeline, the buffer zone being adjacent the segment of single heated insulated pipeline;
a jumper, the jumper having a first end and a second end, the first end being fluidly connected to the buffer zone; and
an induction heating coil around the jumper. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An electrically heated subsea pipeline system, comprising:
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a first segment of pipeline wherein the pipeline has a pipe-in-pipe configuration wherein a first pipe having a wall is concentric inside a second pipe having a wall and the first and second pipes are electrically insulated from each other except at one or more selected locations and wherein the segment may be heated from flow of electrical current in the walls of the first and second pipes;
a jumper, the jumper being a single insulated pipe and having a first end and a second end, the first end being fluidly connected to the first pipe; and
an induction heating coil placed around the jumper. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification