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Axial and Lateral Coupled Response of a Deepsea Riser for Scientific Drilling

[+] Author Affiliations
Hideyuki Suzuki, Kazuo Enomoto, Noriaki Oka

University of Tokyo, Tokyo, Japan

Kotaro Takano

Mitsui Engineering and Shipbuilding Company, Ltd., Japan

Paper No. OMAE2004-51094, pp. 147-155; 9 pages
doi:10.1115/OMAE2004-51094
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

Axial and lateral coupled response of deepsea drilling risers in hang-off condition was investigated. Lateral oscillation of riser has a possibility of being excited by axial tension fluctuation. The lateral response can be described by Mathieu’s equation of parametric oscillation. Numerical analysis method was formulated and verified by comparisons with experimental results. Stability conditions were clarified using the numerical method. Stability of the 4,000m riser for Scientific Drilling was also investigated and guideline for design of ultra deepwater risers was proposed.

Copyright © 2004 by ASME

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