Wintersahll Oil & Gas Corporation, Englewood, Co No description specified. 1-2 (2 Records) Documents Wintershall Oil & Gas Corporation's Roadrunner 15-32 Well Site, Ute Mountain Ute Reservation, Montezuma County, Colorado (1985) Wintershall Oil & Gas Corporation's Ute Mountain Tribal Sidewinder 15-11 Well Pad and Access Road, Montezuma County, Colorado (1985)