With the increasing development of oil and gas reserves in water depths greater than 1500 m, linepipe used for deepwater and ultra-deepwater applications will require enhanced resistance to hydrostatic collapse. To support this need, Corus Tubes has been investigating methods by which increases in UOE linepipe collapse strength can be achieved. In particular, it has been theorised that modifications to the UOE manufacturing process can provide the necessary collapse strength enhancements. Pipe production trials were conducted focusing on the effect of processing parameters during UOE linepipe production, and in addition low temperature heat treatment was used to assess its effect. Full-scale collapse tests were then performed on the resulting linepipe specimens to validate the increase in collapse strength. The results of this work have demonstrated the beneficial effect of a modified UOE manufacturing approach on linepipe collapse resistance. This paper summarizes the work performed, quantifies the increase in collapse strength, and compares the test results to collapse equations found in offshore pipeline standards. It is also demonstrated that the UOE fabrication factor of 0.85 in the DNV offshore pipeline code (DNV OS-F101) may be considered to be over conservative, when linepipe is manufactured using the modified approach summarized herein.
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2004 International Pipeline Conference
October 4–8, 2004
Calgary, Alberta, Canada
Conference Sponsors:
- International Petroleum Technology Institute
ISBN:
0-7918-4176-6
PROCEEDINGS PAPER
The Prediction and Enhancement of UOE-DSAW Collapse Resistance for Deepwater Linepipe
Mark Fryer
,
Mark Fryer
Corus Tubes Energy, Hartlepool, UK
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Peter Tait
,
Peter Tait
Corus Tubes Energy, Hartlepool, UK
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Stelios Kyriakides
,
Stelios Kyriakides
University of Texas at Austin, Austin, TX
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Chris Timms
,
Chris Timms
C-FER Technologies, Edmonton, AB, Canada
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Duane DeGeer
Duane DeGeer
C-FER Technologies, Edmonton, AB, Canada
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Mark Fryer
Corus Tubes Energy, Hartlepool, UK
Peter Tait
Corus Tubes Energy, Hartlepool, UK
Stelios Kyriakides
University of Texas at Austin, Austin, TX
Chris Timms
C-FER Technologies, Edmonton, AB, Canada
Duane DeGeer
C-FER Technologies, Edmonton, AB, Canada
Paper No:
IPC2004-0607, pp. 1961-1966; 6 pages
Published Online:
December 4, 2008
Citation
Fryer, M, Tait, P, Kyriakides, S, Timms, C, & DeGeer, D. "The Prediction and Enhancement of UOE-DSAW Collapse Resistance for Deepwater Linepipe." Proceedings of the 2004 International Pipeline Conference. 2004 International Pipeline Conference, Volumes 1, 2, and 3. Calgary, Alberta, Canada. October 4–8, 2004. pp. 1961-1966. ASME. https://doi.org/10.1115/IPC2004-0607
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