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Brazil Oil Fields May Hold More Than Twice Estimates

Brazilian oil deposits below a layer of salt in the Atlantic Ocean hold at least 123 billion barrels of reserves, more than double government estimates, according to a university study by a former Petroleo Brasileiro SA geologist.

The research, which set out to show government figures were too optimistic, found they underestimated the area’s potential, said Hernani Chaves, a professor at the Rio de Janeiro State University who worked at Petrobras for 35 years. The forecast, which the study puts at a 90 percent probability, compares with the Brazilian oil regulator’s 50 billion-barrel estimate.