This article presents a numerical study for the Petrobras HP-HT pipeline P-53/PRA-1 that will be installed at Marlim Leste field in Campos Basin offshore Brazil. This pipeline will connect P-53 platform in deep-water (1031m) to an Autonomous Platform for Intermediate Pumping (PRA-1) in shallow water (100m). HP-HT pipelines resting on seabed can develop thermal buckling, which is an important concern for the pipeline structural integrity. The aim of this study is to verify the P-53/PRA-1 pipeline behavior during lateral buckling due to thermal cycles and pressure variations, using a new approach for the pipe-soil interaction model in contrast with the traditional Mohr-Coulomb friction model. The pipe-soil interaction model considers soil berms formed due to pipe cyclic displacements, representing different phases of the soil lateral reaction force versus displacement curve: breakout force, suction release, berm formation and residual resistance. The results presented compare the traditional Mohr-Coulomb model with the proposed one for several loads cycles, analyzing displacements, stresses and strains behavior during thermal buckling.
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25th International Conference on Offshore Mechanics and Arctic Engineering
June 4–9, 2006
Hamburg, Germany
Conference Sponsors:
- Ocean, Offshore, and Arctic Engineering Division
ISBN:
0-7918-4749-7
PROCEEDINGS PAPER
HP-HT Pipeline Cyclic Behavior Considering Soil Berms Effect
Carlos de Oliveira Cardoso,
Carlos de Oliveira Cardoso
PETROBRAS, Rio de Janeiro, RJ, Brazil
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Alvaro Maia da Costa,
Alvaro Maia da Costa
PETROBRAS, Rio de Janeiro, RJ, Brazil
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Rafael Familiar Solano
Rafael Familiar Solano
PETROBRAS, Rio de Janeiro, RJ, Brazil
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Carlos de Oliveira Cardoso
PETROBRAS, Rio de Janeiro, RJ, Brazil
Alvaro Maia da Costa
PETROBRAS, Rio de Janeiro, RJ, Brazil
Rafael Familiar Solano
PETROBRAS, Rio de Janeiro, RJ, Brazil
Paper No:
OMAE2006-92375, pp. 205-216; 12 pages
Published Online:
October 2, 2008
Citation
de Oliveira Cardoso, C, da Costa, AM, & Solano, RF. "HP-HT Pipeline Cyclic Behavior Considering Soil Berms Effect." Proceedings of the 25th International Conference on Offshore Mechanics and Arctic Engineering. Volume 4: Terry Jones Pipeline Technology; Ocean Space Utilization; CFD and VIV Symposium. Hamburg, Germany. June 4–9, 2006. pp. 205-216. ASME. https://doi.org/10.1115/OMAE2006-92375
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