Intercomparison of oil spill prediction models for accidental blowout scenarios with and without subsea chemical dispersant injection

TitleIntercomparison of oil spill prediction models for accidental blowout scenarios with and without subsea chemical dispersant injection
Publication TypeJournal Article
Year of Publication2015
AuthorsSocolofsky SA, E. Adams E, Boufadel MC, Aman ZM, Johansen O, Konkel WJ, Lindo D, Madsen MN, North EW, Paris CB, Rasmussen D, Reed M, Ronningen P, Sim LH, Uhrenholdt T, Anderson KG, Cooper C, Nedwed TJ
JournalMarine pollution bulletin
Volume96
Pagination110-26
Date Published2015-Jul-15
Accession NumberMEDLINE:26021288
KeywordsDeepwater Horizon Oil Spill
AbstractWe compare oil spill model predictions for a prototype subsea blowout with and without subsea injection of chemical dispersants in deep and shallow water, for high and low gas-oil ratio, and in weak to strong crossflows. Model results are compared for initial oil droplet size distribution, the nearfield plume, and the farfield Lagrangian particle tracking stage of hydrocarbon transport. For the conditions tested (a blowout with oil flow rate of 20,000 bbl/d, about 1/3 of the Deepwater Horizon), the models predict the volume median droplet diameter at the source to range from 0.3 to 6mm without dispersant and 0.01 to 0.8mm with dispersant. This reduced droplet size owing to reduced interfacial tension results in a one to two order of magnitude increase in the downstream displacement of the initial oil surfacing zone and may lead to a significant fraction of the spilled oil not reaching the sea surface.
DOI10.1016/j.marpolbul.2015.05.039