Collapse Ratings of Cold Expanded Line Pipe Used as Casing
- Rich Miller (BP) | Craig Stewart (BP) | Oladele Owoeye (BP) | Abe King (Shell Exploration & Production Co) | Xin Long (Shell International Exploration and Production) | Randy McGill (Retired)
- Document ID
- Society of Petroleum Engineers
- SPE Annual Technical Conference and Exhibition, 30 September - 2 October, Calgary, Alberta, Canada
- Publication Date
- Document Type
- Conference Paper
- 2019. Society of Petroleum Engineers
- UOE, collapse, casing, line pipe, cold expanded
- 7 in the last 30 days
- 374 since 2007
- Show more detail
- View rights & permissions
|SPE Member Price:||USD 5.00|
|SPE Non-Member Price:||USD 28.00|
API Specification 5L (2018) pipe is commonly used as surface casing. Recent deepwater failures have led to a review of collapse performance of 5L pipe as part of the larger root cause investigation.
A survey of pipeline industry publications generated a database of over 80 collapse tests of cold-expanded line pipe. The data are compared to casing collapse ratings per API Technical Report 5C3 (2018) and to alternative ratings included in API Recommended Practice 1111 (2015) for offshore pipelines and in the submarine pipeline standard DNVGL-ST-F101 (2017). The comparison showed that the pipeline ratings provide a better fit to the collapse data and that API TR 5C3 overpredicts collapse performance of the subject pipe.
Further investigation revealed that, for two operators, the vast majority of offshore surface casing is line pipe that has been cold-expanded without stress relief. Several risk mitigation alternatives were considered. In the short term, the risk can be managed through learning bulletins, design guidelines and operational procedures. The preferred mitigation is to change the collapse rating for cold-expanded line pipe used as casing. This is a long-term solution involving industry standards and the subsequent adoption through commercial design software.
The work described in this paper has led to a ballot change for the next edition of API TR 5C3. This paper is presented to provide drilling industry awareness of the lower collapse performance of cold-expanded line pipe and to add context for selection of an appropriate alternative rating.
|File Size||1023 KB||Number of Pages||9|
API Recommended Practice 1111, Design, Construction, Operation, and Maintenance of Offshore Hydrocarbon Pipelines (Limit State Design). Fifth edition, 2015. Washington, DC: API. https://doi:10.4043/8211-MS
DeGeer, D. U.Marewski, H.G.Hillenbrand, B. Weber, and M. Crawford, 2004. "Collapse Testing of Thermally Treated Line Pipe for Ultra-Deepwater." OMAE2004-51569, Vancover, Canada. https://doi:10.1115/OMAE2004-51569
DeGeer, D., C. Timms, and V. Lobanov, 2005. "Blue Stream Collapse Test Program." OMAE2005-67260, Halkidiki, Greece. https://doi:10.1115/OMAE2005-67260
DeGeer, D., C. Timms, J. Wolodko, M. Yarmuch, R. Preston, and D. MacKinnon, 2007. "Local Buckling Assessments for the Medgaz Pipeline." OMAE2007-29493, San Diego, USA. https://doi:10.1115/OMAE2007-29493
de Winter, P. E., 1981. "Deformation Capacity of Steel Tubes in Deep Water." OTC 4035, Houston. http://doi:10.4043/4035-MS
Fryer, M., P. Tait, S. Kyriakides, C. Timms, and D. DeGeer, 2004. "The Prediction & Enhancement of UOE-DSAW Collapse Resistance for Deepwater Linepipe." IPC04-0607, Alberta, Canada. https://doi:10.1115/IPC2004-0607
Mantovano, L., M. Chebaro, H. Ernst, M. de Souza, C. Timms, and L. Chad, 2011. "The Influence of the UOE-SAWL Forming Process on the Collapse Resistance of Deepwater Linepipe." OMAE2011-49571, Rotterdam, The Netherlands. https://doi:10.1115/OMAE2011-49571
Serebrinsky, S., L. Mantovano, M. de Souza, M. Valdez, H. Ernst, and L. Chad, 2012. "Modeling the Effect of Material Behavior and Mild Thermal Treatments on Collapse Resistance of UOE Pipes." IPC2012-90696, Calgary, Canada. https://doi:10.1115/IPC2012-90696
Slater, S., R. Devine, O. Aamlid, D. Hernandez, and D. Swankek, 2011. "Qualification of Enhanced Collapse Capacity UOE Deepwater Linepipe." OMAE2011-49571, Rotterdam, The Netherlands. https://doi:10.1115/OMAE2011-49571
Stark, P. and D. S. McKeehan, 1995. "Hydrostatic Collapse Research in Support of the Oman India Gas Pipeline." OTC 7705, Houston. https://doi:10.4043/7705-MS