Abstract: The petroleum geological conditions of Sungang block are very complex, the interpretation and evaluation of oil and gas display layers are difficult, and the coincidence rate of traditional interpretation methods is low. Therefore, based on the analysis of the traps, reservoir distribution, reservoir characteristics and fluid properties in Sungang block, the oil and gas display layers within 150 m below the breakpoint are recognized as follows: oil-bearing debris(including those with fluorescence) content is greater than 3%,the relative amplitude of total hydrocarbon anomaly in gas measurement is greater than 1.9 and C_3 is detected, the logging resistivity is greater than 60Ω·m. By using the abnormal display layers of gas logging, the interpretation and evaluation of well B437 were carried out to analyze the logging data of rock pyrolysis, and the high-yield industrial oil flow is found.