Polyester fibre ropes are now an accepted solution for deepwater mooring of production platforms and a single high tenacity fibre grade is widely used. Few studies of other fibres have been reported but polyesters can be produced with a range of properties by varying drawing parameters, and other stiffer fibres are also available. This paper presents a study of these alternative fibre rope solutions, performed within the French Mooring Line project. First, in order to obtain the input data necessary for mooring line analyses an extensive test program was performed to characterize polyester, improved polyester, PEN, LCP, aramid and HMPE fibre ropes from yarns up to 800 ton break load ropes. Tests at different scales have allowed property transfer to be quantified. Rope modelling has been used in parallel to examine the influence of material and structural parameters. Then, using these data, a series of analyses was run by engineering contractors, which quantified the benefits of higher stiffness for different supports (semi-submersible, production platform and offloading buoy) down to 2500 meter depth. Under certain conditions the stiffer ropes can result in significantly reduced rope diameter and weight.
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ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering
June 15–20, 2008
Estoril, Portugal
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4818-0
PROCEEDINGS PAPER
Influence of Fibre Stiffness on Deepwater Mooring Line Response
Patrice Baron,
Patrice Baron
Doris Engineering, Paris, France
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Charles Bideaud,
Charles Bideaud
Technip, La De´fense, France
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Ste´phane Toumit,
Ste´phane Toumit
Principia, La Ciotat, France
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Michel Francois,
Michel Francois
Bureau Veritas, La De´fense, France
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A.-G. Moysan
A.-G. Moysan
Total, La De´fense, France
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Peter Davies
IFREMER, Brest, France
Patrice Baron
Doris Engineering, Paris, France
Karine Salomon
Saipem, Marseille, France
Charles Bideaud
Technip, La De´fense, France
J.-P. Labbe´
Acergy, Suresnes, France
Ste´phane Toumit
Principia, La Ciotat, France
Michel Francois
Bureau Veritas, La De´fense, France
Francois Grosjean
IFP, Solaize, France
Tony Bunsell
ENSMP, Evry, France
A.-G. Moysan
Total, La De´fense, France
Paper No:
OMAE2008-57147, pp. 179-187; 9 pages
Published Online:
July 27, 2009
Citation
Davies, P, Baron, P, Salomon, K, Bideaud, C, Labbe´, J, Toumit, S, Francois, M, Grosjean, F, Bunsell, T, & Moysan, A. "Influence of Fibre Stiffness on Deepwater Mooring Line Response." Proceedings of the ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering. Volume 1: Offshore Technology. Estoril, Portugal. June 15–20, 2008. pp. 179-187. ASME. https://doi.org/10.1115/OMAE2008-57147
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