The objective of this paper is to summarize current ultra-deepwater (i.e. up to 3,500 meters water depth) pipeline mechanical design methodologies in the Gulf of Mexico (GOM), and the rest of the world. The standard mechanical design for ultra-deepwater pipelines in the GOM is based on API RP 1111. API code also has been used for deepwater projects in west Africa. DNV code OS-F101 was mostly used for deepwater projects in offshore Brazil and Europe. Some pipeline designs in the GOM have started to incorporate parts of the DNV design methodology. A discussion of collapse only design and combined loading (i.e. pressure + bending) design will be presented. The buckle arrestors shall be designed along with the ultra-deepwater pipeline mechanical design. The best design criteria are obtained from physical full-scale collapse testing. The comparison of the physical test data and collapse calculations using the DNV and API codes will be presented. It was found that the conservatism still exists within collapse prediction for ultra-deepwater pipeline using modern design codes such as DNV OS-F101 and API RP 1111. Recommendations of the mechanical design methodologies for the ultra-deepwater pipeline are presented.
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ASME 2005 24th International Conference on Offshore Mechanics and Arctic Engineering
June 12–17, 2005
Halkidiki, Greece
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
0-7918-4197-9
PROCEEDINGS PAPER
Pipeline Collapse Methodology for Ultra-Deepwater Available to Purchase
Han S. Choi,
Han S. Choi
Pusan National University, Busan, Korea
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Thomas R. Ayers
Thomas R. Ayers
Technip Offshore, Inc., Houston, TX
Search for other works by this author on:
Han S. Choi
Pusan National University, Busan, Korea
Thomas R. Ayers
Technip Offshore, Inc., Houston, TX
Paper No:
OMAE2005-67082, pp. 431-435; 5 pages
Published Online:
November 11, 2008
Citation
Choi, HS, & Ayers, TR. "Pipeline Collapse Methodology for Ultra-Deepwater." Proceedings of the ASME 2005 24th International Conference on Offshore Mechanics and Arctic Engineering. 24th International Conference on Offshore Mechanics and Arctic Engineering: Volume 3. Halkidiki, Greece. June 12–17, 2005. pp. 431-435. ASME. https://doi.org/10.1115/OMAE2005-67082
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