This is a log from an oil or gas well in the Bureau of Economic Geology's Geophysical Log Facility. API Number: 424953203000 Top Depth: 100 Ft. Bottom Depth: 3134 Ft. lease_name: OBRIEN, G. W. #1523 reservoir_name: NORTH WARD ESTES operator_name: CHEVRON USA INC log_source_name: RRC datum_name: Unknown state_name: Texas county_name: Winkler