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Direct Electrical Heating Closer to Subsea Structures

Direct Electrical Heating Closer to Subsea Structures

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Sammendrag
Direct electrical heating is a qualified method for flow assurance in coated oil and gas flowlines. A concern is ac corrosion on connected templates caused by stray currents from the DEH system. This has prevented DEH from being installed on flowlines with in-line templates and restricted heating of flowline sections near the end templates. Solutions to limit stray currents have been verified by full-scale tests. The results confirm a reduction in stray currents through templates to 3 % of the supply current by installing laminated iron cores on the heated flowline.
Språk
Engelsk
Institusjon(er)
  • SINTEF Energi AS / Elkraftteknologi
År
2016
Publisert i
ISOPE - International Offshore and Polar Engineering Conference. Proceedings
ISSN
1098-6189
Forlag
International Society of Offshore & Polar Engineers
Bok
Proceedings of the Twenty-sixth International Ocean and Polar Engineering Conference - ISOPE 2016
Hefte nr.
2016
ISBN
978-1-880653-88-3
Side(r)
275 - 278