This is a log from an oil or gas well in the Bureau of Economic Geology's Geophysical Log Facility. API Number: 423953059900 Top Depth: 5800 Ft. Bottom Depth: 10974 Ft. lease_name: VARISCO CARTER UNIT #1 reservoir_name: GIDDINGS & AUSTIN CHALK operator_name: CLAYTON WILLIAMS ENERGY INC log_source_name: BEG datum_name: Unknown state_name: Texas county_name: Robertson