Trace heating of wet insulated subsea flowlines
Chapter, Peer reviewed
Published version
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https://hdl.handle.net/11250/3085971Utgivelsesdato
2023Metadata
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Originalversjon
Proceedings of the Thirty-third (2023) International Ocean and Polar Engineering Conference, Ottawa, Canada, June 19-23, 2023 - ISOPE 2023Sammendrag
This article evaluates flow assurance by heat trace cables for wet insulated flowlines as an alternative to direct electrical heating or chemicals. Heat trace cables are attractive for their simple and flexible design and that they can be retrofitted. Case studies of a 14" flowline, where trace heat cables are placed outside the coating, indicate that fluid temperatures can be maintained at 25-55 °C. Heating capability depend on flowline geometry, heating cable type and burial depth. Commercial heat trace cables are available for flowline lengths including at least 50 km. Heat trace cables with conventional electrical insulation can deliver power in the 100 kW/km range. KEY WORDS: Hydrate management; flow assurance; electrical heating; flowlines, trace heating; direct electrical heating. Trace heating of wet insulated subsea flowlines