Several initiatives have been undertaken by the operators, engineering companies, product manufacturers, and regulatory bodies to enable increased use of steel catenary riser (SCR) design in development of deepwater and ultra-deepwater fields. Some of these efforts focus on improvement in understanding of soil-structure interaction at SCR touch down zone (TDZ) and its impact on fatigue damage estimates through analytical studies, laboratory testing, or in-field monitoring of SCR behavior. Through recent studies and laboratory testing work for floating platforms with SCR, the need for significant enhancement of SCR design at TDZ through implementation of alternate solutions has been identified. This paper presents a summary of the work undertaken in a Joint Industry Project (JIP) during 2004 to 2007 [1, 2] to develop solutions and undertake qualification tasks for four alternatives with potential to improve fatigue performance at TDZ by factor of up to 10 or more. The solutions considered at SCR TDZ include: thick light-weight coating over steel riser sections; steel riser sections with upset ends; high strength steel riser sections with integral connectors; and a titanium segment. The major qualification tasks undertaken for each solution will be identified and discussed. The qualification program undertaken for each solution varied and in some cases, it also included manufacturing of samples, laboratory and full-scale fatigue testing, and post-failure evaluation. Through significant qualification activities undertaken in this JIP, progress has been made to bring these solutions to project ready state for their consideration at the frond end engineering design (FEED) stage. Such design enhancements would enable increase in selection of SCR design for production and export riser applications under severe operating conditions, harsh environment, and floating systems with high motions.
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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
Volume 1: Offshore Technology; Special Symposium on Ocean Measurements and Their Influence on Design
ISBN:
0-7918-4267-3
PROCEEDINGS PAPER
Development and Qualification of Alternative Solutions for Improved Fatigue Performance of Deepwater Steel Catenary Risers Available to Purchase
Rajiv K. Aggarwal,
Rajiv K. Aggarwal
Granherne, Inc., Houston, TX
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Marcio M. Mourelle,
Marcio M. Mourelle
Petrobras, Rio de Janeiro, Brazil
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Steinar Kristoffersen,
Steinar Kristoffersen
Statoil ASA, Stavanger, Norway
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Pedro Vargas,
Pedro Vargas
Chevron Energy Technology Company, Houston, TX
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Michael Else,
Michael Else
Minerals Management Service, Herndon, VA
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Ronald W. Schutz,
Ronald W. Schutz
RTI Energy Systems, Inc., Niles, OH
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Giovanni Portesan,
Giovanni Portesan
Socotherm Americas, Buenos Aires, Argentina
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Alfonso Izquierdo,
Alfonso Izquierdo
TenarisTamsa, Veracruz, Mexico
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He´ctor Quintanilla,
He´ctor Quintanilla
TenarisTamsa, Veracruz, Mexico
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Stefan Schamuhn,
Stefan Schamuhn
V&M Deutschland, Dusseldorf, Germany
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Celine Sches
Celine Sches
V&M Tubes, Aulnoye-Aymeris, France
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Rajiv K. Aggarwal
Granherne, Inc., Houston, TX
Marcio M. Mourelle
Petrobras, Rio de Janeiro, Brazil
Steinar Kristoffersen
Statoil ASA, Stavanger, Norway
Henri Godinot
Total E&P, Paris, France
Pedro Vargas
Chevron Energy Technology Company, Houston, TX
Michael Else
Minerals Management Service, Herndon, VA
Ronald W. Schutz
RTI Energy Systems, Inc., Niles, OH
Giovanni Portesan
Socotherm Americas, Buenos Aires, Argentina
Alfonso Izquierdo
TenarisTamsa, Veracruz, Mexico
He´ctor Quintanilla
TenarisTamsa, Veracruz, Mexico
Stefan Schamuhn
V&M Deutschland, Dusseldorf, Germany
Celine Sches
V&M Tubes, Aulnoye-Aymeris, France
Paper No:
OMAE2007-29325, pp. 315-329; 15 pages
Published Online:
May 20, 2009
Citation
Aggarwal, RK, Mourelle, MM, Kristoffersen, S, Godinot, H, Vargas, P, Else, M, Schutz, RW, Portesan, G, Izquierdo, A, Quintanilla, H, Schamuhn, S, & Sches, C. "Development and Qualification of Alternative Solutions for Improved Fatigue Performance of Deepwater Steel Catenary Risers." Proceedings of the ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering. Volume 1: Offshore Technology; Special Symposium on Ocean Measurements and Their Influence on Design. San Diego, California, USA. June 10–15, 2007. pp. 315-329. ASME. https://doi.org/10.1115/OMAE2007-29325
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