Abstract: This paper introduces the in-house laboratory investigation and field test of Caonan95-2 well cluster in the south of Le An oil field. The essential parameters including pay ignition temperature, air volume and gas injection volume, fuel content, ignition time, etc and performance monitoring project were verified by in-house laboratory investigation. Field test showed that Caonan95-2 well cluster succeeded in electrified ignition, and the exactly selected parameters ensured the persistent combustion which maked the test run favorable. This paper analyzes the combustion pay effect and get some regularity recognition that there is an obvious directivity in the horizontal direction of combustion front, which shows that there is stronger heterogeneity in horizontal direction and vertical direction, giving evidence to improve the profile of combustion front and increase the effect of combustion test, which is significant to the reservoir development of the same type.