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Investigations on the Behavior of Vertical Production Risers

[+] Author Affiliations
C. K. Morooka, F. M. Coelho, H. Y. Kubota

State University of Campinas, Campinas, SP, Brazil

J. A. Ferrari, Jr.

Petrobras/E&P-Corp., Rio de Janeiro, RJ, Brazil

E. J. B. Ribeiro

Petrobras/CENPES, Rio de Janeiro, RJ, Brazil

Paper No. OMAE2004-51190, pp. 393-401; 9 pages
doi:10.1115/OMAE2004-51190
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

The present paper describes the behavior of a vertical riser in waves, currents and which is excited by displacements at the riser top. Fundamental equations for riser behavior are described and the Ferrari&Bearman model [4] is applied to estimate hydrodynamic load for “in-line” and transverse directions of the riser. Solution for riser behavior is obtained in time domain, calculations are performed for deepwater field production scenario and discussions are addressed. The influence of variation of riser diameter and drag coefficient along its length, the presence of floaters and effect of petroleum fluid flowing in the riser are investigated. Moreover, effects of the upper and bottom end conditions of the riser on its behavior are also taken into account in the analysis.

Copyright © 2004 by ASME
Topics: Pipeline risers

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