This is a log from an oil or gas well in the Bureau of Economic Geology's Geophysical Log Facility. API Number: 421213113600 Top Depth: 6800 Ft. Bottom Depth: 7855 Ft. lease_name: MCKELVEY, CLARK W. FLP #5 reservoir_name: NEWARK, EAST (BARNETT SHALE) operator_name: CHIEF O&G LLC log_source_name: RRC datum_name: Unknown state_name: Texas county_name: Denton