The Three Forks formation in North Dakota, South Dakota and Montana could hold more undiscovered, technically recoverable oil than the Bakken Shale that lies above it, according to the United States Geological Survey’s (USGS) latest assessment.
The mean of the estimate for the two formations’ combined undiscovered, technically recoverable oil is 7.38 billion barrels, effectively doubling the 2008 estimate for the Bakken shale alone. The mean estimate for Bakken oil, at 3.65 bn bbls – the same as in 2008 – is just shy of the Three Forks’ 3.73 bn bbl estimate. Keep reading →