Assessment of undiscovered oil and gas resources in the Spraberry Formation of the Midland Basin, Permian Basin Province, Texas, 2017 - Marra, Kristen; Gaswirth, Stephanie; Schenk, Christopher; Leathers-Miller, Heidi; Klett, Timothy R.; Mercier, Tracey; Le, Phuong; Tennyson, Marilyn; Finn, Thomas; Hawkins, Sarah; Brownfield, Michael (Fact Sheet, 2017)