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Influence of Bimodal/Bidirectional Characteristics of Campos Basin Sea-States on Riser Fatigue Damage Results

[+] Author Affiliations
Ana Lúcia F. Lima Torres, Luis Manoel Paiva Nunes

Petrobras S.A., Rio de Janeiro, RJ, Brazil

Marcos Queija de Siqueira, Claudio Marcio Silva Dantas, Gabriela Grisolia de Ávila

COPPE/UFRJ, Rio de Janeiro, RJ, Brazil

Paper No. OMAE2004-51101, pp. 189-198; 10 pages
doi:10.1115/OMAE2004-51101
From:
  • ASME 2004 23rd International Conference on Offshore Mechanics and Arctic Engineering
  • 23rd International Conference on Offshore Mechanics and Arctic Engineering, Volume 1, Parts A and B
  • Vancouver, British Columbia, Canada, June 20–25, 2004
  • Conference Sponsors: Ocean, Offshore, and Arctic Engineering Division
  • ISBN: 0-7918-3743-2 | eISBN: 0-7918-3738-6
  • Copyright © 2004 by ASME

abstract

Petrobras R&D Center developed feasibility studies of the lazy-wave configuration of steel catenary risers (SLWR) connected to a turret-moored FPSO and to the border of a spread-moored FSO, in Campos Basin, at water depths of 1290m and 1800m, respectively. In both projects the fatigue analysis considered the bimodal/bidirectional characteristics of sea-states. Special methodologies for environmental data statistical treatment and riser fatigue analysis were developed. This paper presents the study performed to evaluate the importance of considering the bimodal/bidirectional characteristic of Campos Basin sea-states in the steel catenary risers (SCR) fatigue damage verification.

Copyright © 2004 by ASME

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