Typical riser analysis for a marine drilling riser using the conventional composite modeling scheme will have only one line of elements mathematically representing riser pipe and auxiliary lines. The mass and weight of the riser system may be properly modeled. It is up to the analyst to include auxiliary lines’ stiffness, bending and/or axial. The rule of thumb is to ignore them if the riser is not of load-sharing design, otherwise include them. However, even with stiffness included in the model, the composite modeling scheme will not capture the load path correctly. Parametric studies were performed to develop a modeling scheme for a load-sharing marine drilling riser. This paper compares the results by the newly developed modeling scheme with the composite model. Significantly different tension patterns between the two models are observed.
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ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering
June 10–15, 2007
San Diego, California, USA
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
0-7918-4269-X
PROCEEDINGS PAPER
Riser Modeling Scheme for a Load-Sharing Marine Drilling Riser
Roger Chang,
Roger Chang
Engineering, Research & Computing, Houston, TX
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Roger Chang
Engineering, Research & Computing, Houston, TX
Ed Fisher
Retired
Paper No:
OMAE2007-29010, pp. 3-7; 5 pages
Published Online:
May 20, 2009
Citation
Chang, R, & Fisher, E. "Riser Modeling Scheme for a Load-Sharing Marine Drilling Riser." Proceedings of the ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering. Volume 3: Pipeline and Riser Technology; CFD and VIV. San Diego, California, USA. June 10–15, 2007. pp. 3-7. ASME. https://doi.org/10.1115/OMAE2007-29010
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