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Oil Spills in Coastal Areas: Prevention and Control

Oil Spills in Coastal Areas: Prevention and Control. Victoria Broje Bren School of Environmental Science and Management. University of California, Santa Barbara. Oil spill modeling. Oil spill location and properties depend on:. Oil spill modeling.

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Oil Spills in Coastal Areas: Prevention and Control

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  1. Oil Spills in Coastal Areas:Prevention and Control Victoria Broje Bren School of Environmental Science and Management University of California, Santa Barbara

  2. Oil spill modeling • Oil spill location and properties depend on:

  3. Oil spill modeling • Oil spill location and properties depend on: • Initial oil/oil product properties (Chemical composition, density, viscosity, pour point, flash point, maximum water uptake, etc) • Environmental conditions (Air and sea temperature, wind speed, currents, wave height, water salinity, water sediment load, presence of ice etc.) • Release conditions (instantaneous, continuous, contained, surface, underwater spill) • Amount of oil spilled • Response options

  4. Oil spill modeling – Why even bother? • Application for oil spill modeling: • Environmental risk assessment for offshore oil fields development. • Contingency planning. • Estimation of environmental impact.

  5. Oil spill modeling • What we want to know: • Where is it? – Hydrodynamic model • How does it look like? – Oil weathering model

  6. Oil spill modeling • Oil Weathering Model: • density • viscosity • evaporation rate • dispersion rate • water content • pour point • flash point • spreading rate • Response Actions Model • amount of oil dispersed • collected • burned • Hydrodynamic Model • location • surface exposure • amount of stranded oil • concentration in the water column Output: • Properties prediction • Budget graph • Response efficiency • Affected areas and species

  7. Oil spill modeling Some equations used for oil weathering modeling (ADIOS model): Evaporation:

  8. Oil spill modeling Evaporation:

  9. Oil spill modeling Dispersion rate:

  10. Oil spill modeling Dispersion rate:

  11. Oil spill modeling Emulsification:

  12. Oil spill modeling Emulsification:

  13. Oil spill modeling Density:

  14. Oil spill modeling Density:

  15. Oil spill modeling Viscosity:

  16. Oil spill modeling Viscosity:

  17. Oil spill modeling Spreading:

  18. Oil spill modeling Spreading:

  19. Oil spill modeling Spreading (OWM):

  20. Oil spill modeling - ADIOS • Instantaneous release: • 1000 bbl of • Brent Blend • Coal Oil Point • at sea temperature of 15ºC • at wind speed of 15 m/s

  21. Oil spill modeling - ADIOS

  22. Brent Blend – Coal Oil Point

  23. Brent Blend – Coal Oil Point

  24. Brent Blend – Coal Oil Point

  25. Brent Blend – Coal Oil Point

  26. Brent Blend wind speed 2m/s – wind speed 15m/s

  27. Brent Blend wind speed 2m/s – wind speed 15m/s

  28. Laboratory modeling Evaporation simulation

  29. Laboratory modeling Emulsification simulation a) b) a) Emulsification of Kyrtael crude and its residues at 11C b) Emulsification of Bolshepurgovskaya crude and its residues at 11C (from left to the right: 250C+, 200C+, 150C+, crude)

  30. OSCAR model

  31. OSCAR model

  32. OSCAR model

  33. OSCAR model

  34. OSCAR model

  35. OSCAR model

  36. OSCAR model

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