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Analysis Guidelines and Application of a Riser-Soil Interaction Model Including Trench Effects

[+] Author Affiliations
Bernt J. Leira

Norwegian University of Science and Technology, Trondheim, Norway

Elizabeth Passano

Marintek, Trondheim, Norway

Daniel Karunakaran

Subsea7, Tananger, Norway

Knut-Aril Farnes

Statoil Research Center, Trondheim, Norway

Egil Giertsen

MARINTEK, Trondheim, Norway

Paper No. OMAE2004-51527, pp. 955-962; 8 pages
doi:10.1115/OMAE2004-51527
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

A general overview of design aspects related to metal catenary risers is first given. Response characteristics of these types of riser configurations are considered. It is subsequently focused on models for soil-pipe interaction, which have a strong influence on computed riser stresses in the touch-down region. The so-called CARISIMA models for riser-soil interaction in relation to horizontal and vertical motion (i.e.horizontal resistance and suction) are presented. Inherent limitations of the models are summarised. Basic input parameters are described, considerations relevant for establishment of initial trench profile are given, and examples of riser response analysis are presented. Typical behaviour of the numerical models which is observed in the example analyses is also reported.

Copyright © 2004 by ASME
Topics: Pipeline risers , Soil

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