Energy companies are lining up for their shot to drill in the Dakotas and Montana after a new government report revealed that a massive geological formation stretching across the states contains twice the oil and three times the amount of natural gas than was originally believed.

While the new estimate is drawing smaller companies to the game, the larger players like Schlumberger, Halliburton and Continental Resources are pushing forward with ambitious multi-year plans to stake their claim in the industry.

Continental recently announced a five-year plan to triple its production by 2017. The company’s growth is based on success in North Dakota and Montana as well as in parts of Oklahoma.