Esperson dome oxygen combustion pilot test: postburn coring results

Postburn corehole data from an O 2 combustion pilot test in Esperson Dome field, Liberty County, TX, show that the combustion temperature was 930 to 1,020°F. Final oil saturation was 0% in the burned zone and 11% to 34% in the sand adjacent to the burned zone. Roughly 49,000 bbl of incremental oil was produced at an injected O 2 /produced-oil ratio of 4.1 Mscf/bbl