All those hookers won’t be leaving North Dakota any time soon.

…the region that spans North Dakota, South Dakota and Montana could now produce 7.4 billion barrels of oil, 6.7 trillion cubic feet of natural gas and 0.53 billion barrels of natural gas liquids. Compared to 2008 estimates, thats triple the amount of shale gas and double the amount of shale oil that the region could yield.

via Interior Department boosts estimates of oil-and-gas resources in North Dakota – The Hills E2-Wire.