During design stage of high pressure/high temperature pipelines, some conservative parameters are adopted along with sensitivity analyses to assure safe operation in the presence of uncertainties that influence buckle formation, e.g. pipe-soil interaction, as-laid out-of-straightness and initial heat-up. After operation starts and lateral buckles appeared along the line, a survey may provide valuable information regarding confirmation of the design assumptions, evaluation of actual behaviour and the possibility of increase the operating conditions. This work presents the methodology applied to analyse the configuration of the P-53/PRA-1 12″ oil export pipeline in operation using data from a sidescan sonar survey. The aim of such analyses was to gather information for an FE model calibration as well as to obtain preliminary estimates for the bending strains at lateral buckling locations. Special attention was dedicated to smoothing and interpolation of the pipeline coordinates extracted from sonar imagery in order to avoid unrealistic strains estimates.
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ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering
June 19–24, 2011
Rotterdam, The Netherlands
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4436-6
PROCEEDINGS PAPER
Assessment of Lateral Buckles in a HP/HT Pipeline Using Sidescan Sonar Data
Alexandre Santos Hansen,
Alexandre Santos Hansen
Petrobras S. A., Rio de Janeiro, RJ, Brazil
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Bruno Reis Antunes,
Bruno Reis Antunes
Petrobras S. A., Rio de Janeiro, RJ, Brazil
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Rafael Familiar Solano,
Rafael Familiar Solano
Petrobras S. A., Rio de Janeiro, RJ, Brazil
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Graeme Roberts,
Graeme Roberts
Subsea 7 Ltd., Sutton, Surrey, UK
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Arek Bedrossian
Arek Bedrossian
Subsea 7 Ltd., Sutton, Surrey, UK
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Alexandre Santos Hansen
Petrobras S. A., Rio de Janeiro, RJ, Brazil
Bruno Reis Antunes
Petrobras S. A., Rio de Janeiro, RJ, Brazil
Rafael Familiar Solano
Petrobras S. A., Rio de Janeiro, RJ, Brazil
Graeme Roberts
Subsea 7 Ltd., Sutton, Surrey, UK
Arek Bedrossian
Subsea 7 Ltd., Sutton, Surrey, UK
Paper No:
OMAE2011-50183, pp. 897-904; 8 pages
Published Online:
October 31, 2011
Citation
Hansen, AS, Antunes, BR, Solano, RF, Roberts, G, & Bedrossian, A. "Assessment of Lateral Buckles in a HP/HT Pipeline Using Sidescan Sonar Data." Proceedings of the ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. Volume 4: Pipeline and Riser Technology. Rotterdam, The Netherlands. June 19–24, 2011. pp. 897-904. ASME. https://doi.org/10.1115/OMAE2011-50183
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