This is a log from an oil or gas well in the Bureau of Economic Geology's Geophysical Log Facility. API Number: 421313319900 Top Depth: 512 Ft. Bottom Depth: 4719 Ft. lease_name: SPEAR, BESSIE B. #1 reservoir_name: W/C operator_name: RANGE OIL CO log_source_name: BEG datum_name: Unknown state_name: Texas county_name: Duval