This is a log from an oil or gas well in the Bureau of Economic Geology's Geophysical Log Facility. API Number: 4228300000 lease_name: SAN EVANS reservoir_name: Unknown operator_name: FRED W. SHIELD - NAVILLUS OIL WELL SERVICING COMPA log_source_name: RRC datum_name: Unknown state_name: Texas county_name: La Salle