Credit Suisse has released an initial estimate on the costs to BP and it's $37 billion.
More details from Business Week:
Cleanup costs may be $15 billion to $23 billion if the well leaks until relief drilling is completed in August, analysts led by Kim Fustier in London said. Claims may rise to $14 billion
Note, the two major components to this estimate. The first is the spill rate. Credit Suisse clearly is using 75 million gallons total.
By early August when the relief wells are drilled, Macondo could have spilled 45 to 75 million gallons of oil into the Gulf, four to seven times Exxon Valdez.
That is quite low of an spill rate estimate. Using a recent top estimate of 4 million gallons per day, we calculate by August, the total amount spilled would be 360 million gallons. The spill rate is an estimate, there is no meter actually measuring it. Spill rates were revised to the high end of 25,000 barrels a day.
Using a longer and clearer video clip of the oil leak for the USGS analysis, Wereley said the figure from his team was reduced to the 12,000-25,000 per-barrel range because of the amount of methane gas and other natural gases consistently gushing out of the pipe.
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