The significant growth in offshore operations increases the risk of a pipeline rupture, even considering the high standards of safety involved. Throughout a submarine leakage, four different amounts of oil may be accounted. The first one is the oil volume released until the leakage detection. The second one is the volume leaked throughout mitigation initiatives (e.g., pump shutdown and valve closure). The third parcel is the amount released by gravitational flow. Finally, the fourth and last amount of oil is released due to the water-oil entrainment, generally known as advective migration. Normally, a considerable amount of oil is released in this step. It begins just after the internal pipeline pressure becomes equal to the external one. The present work continues to introduce a mathematical alternative approach, based on the theories of perturbation and unstable immiscible displacement, to accurately estimate the leakage kinetics and the amount of oil released by the advective migration phenomenon. Situations considering different hole sizes and thicknesses were tested experimentally and through simulations. Additional experiments were accomplished using smooth and rough edge surfaces, besides different slopes (using the horizontal plane as reference). Those experiments permitted a preliminary evaluation of the importance of these factors. The results obtained with the model showed good agreement with the experimental data in many situations considered.
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June 2009
Research Papers
New Developments for the Description of Oil Leakages by Advective Migration From Submarine Pipelines
Renan Martins Baptista,
Renan Martins Baptista
Leak Detection/Pipeline Simulation Research Coordinator
Petrobras R & D Center,
Cidade Universitária
, Ilha do Fundão, Quadra 7, 21949-900 Rio de Janeiro, Brazil
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Ricardo Antonio Francisco Machado,
Ricardo Antonio Francisco Machado
Department of Chemical Engineering,
Federal University of Santa Catarina
, Caixa Postal 476, Trindade Florianópolis, 88040-000 Santa Catarina, Brazil
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Marintho Bastos Quadri,
Marintho Bastos Quadri
Department of Chemical Engineering,
Federal University of Santa Catarina
, Caixa Postal 476, Trindade Florianópolis, 88040-000 Santa Catarina, Brazil
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Ariovaldo Bolzan,
Ariovaldo Bolzan
Department of Chemical Engineering,
Federal University of Santa Catarina
, Caixa Postal 476, Trindade Florianópolis, 88040-000 Santa Catarina, Brazil
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André Lourenço Nogueira,
André Lourenço Nogueira
Department of Chemical Engineering,
Federal University of Santa Catarina
, Caixa Postal 476, Trindade Florianópolis, 88040-000 Santa Catarina, Brazil
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Toni Jefferson Lopes
Toni Jefferson Lopes
Department of Chemical Engineering,
Federal University of Santa Catarina
, Caixa Postal 476, Trindade Florianópolis, 88040-000 Santa Catarina, Brazil
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Renan Martins Baptista
Leak Detection/Pipeline Simulation Research Coordinator
Petrobras R & D Center,
Cidade Universitária
, Ilha do Fundão, Quadra 7, 21949-900 Rio de Janeiro, Brazil
Ricardo Antonio Francisco Machado
Department of Chemical Engineering,
Federal University of Santa Catarina
, Caixa Postal 476, Trindade Florianópolis, 88040-000 Santa Catarina, Brazil
Marintho Bastos Quadri
Department of Chemical Engineering,
Federal University of Santa Catarina
, Caixa Postal 476, Trindade Florianópolis, 88040-000 Santa Catarina, Brazil
Ariovaldo Bolzan
Department of Chemical Engineering,
Federal University of Santa Catarina
, Caixa Postal 476, Trindade Florianópolis, 88040-000 Santa Catarina, Brazil
André Lourenço Nogueira
Department of Chemical Engineering,
Federal University of Santa Catarina
, Caixa Postal 476, Trindade Florianópolis, 88040-000 Santa Catarina, Brazil
Toni Jefferson Lopes
Department of Chemical Engineering,
Federal University of Santa Catarina
, Caixa Postal 476, Trindade Florianópolis, 88040-000 Santa Catarina, BrazilJ. Pressure Vessel Technol. Jun 2009, 131(3): 031701 (8 pages)
Published Online: April 6, 2009
Article history
Received:
January 15, 2007
Revised:
January 14, 2009
Published:
April 6, 2009
Citation
Baptista, R. M., Machado, R. A. F., Quadri, M. B., Bolzan, A., Nogueira, A. L., and Lopes, T. J. (April 6, 2009). "New Developments for the Description of Oil Leakages by Advective Migration From Submarine Pipelines." ASME. J. Pressure Vessel Technol. June 2009; 131(3): 031701. https://doi.org/10.1115/1.3089499
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