Comparative Risk Assessment (CRA) of response options and subsea dispersant injection for a subsea oil well blowout
Subsea dispersant injection in response to a deep water oil and gas well blowout can improve the effectiveness of dispersant treatment; reduce the volume of oil that reaches the water surface; reduce human and wildlife exposure; disperse the oil over a large water volume at depth to reduce concentration; reduce the persistence of any oil that does surface; enhance oil biodegradation; and reduce shoreline exposure to floating and surface-water entrained/dissolved oil. Potential trade-offs of subsea dispersant use include increased water column and benthic resource exposures to oil at depth.
To better understand the implications of subsea dispersant use, RPS scientists modelled a hypothetical deep water well blowout in the northern Gulf of Mexico to predict oil fate and compare the environmental exposure of no intervention to four different response options: mechanical recovery, in-situ burning, surface dispersant application, and subsea dispersant injection.
Comparative Risk Assessment (CRA) of Response Options for an Uncontrolled Subsea Oil Well Blowout in a Deep Water Marine Environment
American Petroleum Institute (API)
- Oil and gas
- Gulf of Mexico, USA
- Environmental impact assessment
- Comparative risk assessment
- Metocean data analysis
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