In the last years, the most of offshore oil and gas reserves discoveries in Brazil are placed in ultra-deep water depths. Petroleum production from these offshore fields needs developments with novel solutions in terms of necessary technologies and economical viability. The use of vertical rigid risers such as top tensioned risers (TTR) and others like combined systems as self standing hybrid risers and steel catenary risers for ultra-deep waters have shown viable from both, technical and economical aspects. However, there are needs for detailed studies on their dynamic behavior in order to improve, particularly, the understanding of influence of the environment as wave and current, and floating platform oscillations at the riser top. The present work presents studies on vertical top tensioned riser dynamic behavior through time domain simulations of its displacements and respective, bending moments and stresses. Influences of the vortex induced vibrations (VIV) and waves on the riser service life reduction are analyzed. Maximum and minimum envelops for displacements and stresses along riser length are shown.
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ASME 2005 24th International Conference on Offshore Mechanics and Arctic Engineering
June 12–17, 2005
Halkidiki, Greece
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
0-7918-4195-2
PROCEEDINGS PAPER
Dynamic Behavior of a Vertical Riser and Service Life Reduction
Celso K. Morooka,
Celso K. Morooka
State University of Campinas, Campinas, SP, Brazil
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Fa´bio M. Coelho,
Fa´bio M. Coelho
State University of Campinas, Campinas, SP, Brazil
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Elton J. B. Ribeiro,
Elton J. B. Ribeiro
Petrobras/CENPES, Rio de Janeiro, RJ, Brazil
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Jose´ A. Ferrari, Jr.,
Jose´ A. Ferrari, Jr.
Petrobras/E&P Corporation, Rio de Janeiro, RJ, Brazil
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Ricardo Franciss
Ricardo Franciss
Petrobras/CENPES, Rio de Janeiro, RJ, Brazil
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Celso K. Morooka
State University of Campinas, Campinas, SP, Brazil
Fa´bio M. Coelho
State University of Campinas, Campinas, SP, Brazil
Elton J. B. Ribeiro
Petrobras/CENPES, Rio de Janeiro, RJ, Brazil
Jose´ A. Ferrari, Jr.
Petrobras/E&P Corporation, Rio de Janeiro, RJ, Brazil
Ricardo Franciss
Petrobras/CENPES, Rio de Janeiro, RJ, Brazil
Paper No:
OMAE2005-67294, pp. 605-610; 6 pages
Published Online:
November 11, 2008
Citation
Morooka, CK, Coelho, FM, Ribeiro, EJB, Ferrari, JA, Jr., & Franciss, R. "Dynamic Behavior of a Vertical Riser and Service Life Reduction." Proceedings of the ASME 2005 24th International Conference on Offshore Mechanics and Arctic Engineering. 24th International Conference on Offshore Mechanics and Arctic Engineering: Volume 1, Parts A and B. Halkidiki, Greece. June 12–17, 2005. pp. 605-610. ASME. https://doi.org/10.1115/OMAE2005-67294
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