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Effects in Free Water Knockout Separator Caused by FPSO Motions in Ocean Waves

[+] Author Affiliations
Catharine Fernandez Martins, Celso Kazuyuki Morooka

University of Campinas, Campinas, Brazil

Paper No. OMAE2017-62118, pp. V008T11A044; 10 pages
  • ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology
  • Trondheim, Norway, June 25–30, 2017
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-5776-2
  • Copyright © 2017 by ASME


In offshore operations, wind, waves and currents cause motions on Floating Production Storage and Offloading (FPSO) platforms that can induce effects on equipment at the topside processing plant, such as on an oilfield separator. The purpose of this work is to propose a procedure to evaluate the quality of the emulsion separated in a horizontal Free Water Knockout separator (FWKO) under the influence of the FPSO motions in ocean waves. In this paper, a software named WAMIT© was used to obtain FPSO motions. Time series of roll and pitch motions are calculated considering regular and irregular waves and through these results the emulsion quality indicator is obtained to evaluate the separator performance. The main contribution from the present study is the estimation of the quality of the emulsion separated on the FWKO, which can contribute to improve the operational criteria for three-phase separators commonly used in offshore applications.

Copyright © 2017 by ASME
Topics: FPSO , Ocean waves , Water



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