Norstra Energy, Inc. received a major boost to its South Sun River Bakken Project in Montana when the US Geological Survey announced that they were doubling the reserve estimate for the Bakken and Three Forks Formation in Montana, North and South Dakota. The USGS stated that the formations could contain an estimated 7.4 billion barrels of undiscovered, technically recoverable oil. That's double the original 2008 estimate of 3.65 billion barrels.

The USGS also considers the Bakken and Three Forks to be the larger continuous oil formation in the continental United States. This is the same oil formation that Norstra is targeting on their lease holdings. Norstra would like to refer to the USGS publication for the precise regional coverage of the new Bakken and Three Forks estimates in comparison to their own lease holdings.