The Bullfrog 5-12 core was a planned core taken in the First Frontier sand member of the Cretaceous Frontier Formation at a starting measured depth of 17,815’in the Bullfrog Unit, section 12, Township 36 N, Range 87W, Natrona County, Wyoming. The cored interval was from 17,815’ MD to 17,856’ MD. Recovery was 100%; 41 feet cored and recovered. The core intersects a spectacular natural fracture complex that appears to control productivity in the well. The purpose of this report is to document the nature of the fractures and their geometry with respect to the wellbore