This is a log from an oil or gas well in the Bureau of Economic Geology's Geophysical Log Facility. API Number: 420333120900 Top Depth: 3710 Ft. Bottom Depth: 9909 Ft. lease_name: BLACKARD, SPHELIA #1 reservoir_name: BLACKARD operator_name: EXXON CORP log_source_name: RRC datum_name: Unknown state_name: Texas county_name: Borden