Rocky Mountain

SM Energy has been active in the Rockies since the early 1990s. The acquisition of Nance Petroleum in 1999 established a more significant presence in the region. While the Company has approximately 200,00 net acres in the Williston Basin, SM Energy's activities in the region are primarily focused on the oil-producing formations of the North Dakota portion of the Basin, namely the Bakken and Three Forks formations, where the Company has approximately 87,000 net acres.