This is a log from an oil or gas well in the Bureau of Economic Geology's Geophysical Log Facility. API Number: 4212132858 Top Depth: 7600 Ft. Bottom Depth: 10250 Ft. lease_name: J GRIFFITH UNIT reservoir_name: NEWARK EAST BARNETT SHALE operator_name: XTO ENERGY INC log_source_name: Unknown state_name: Texas county_name: Denton