By using testing, coring and logging data of part exploratory well, evaluation well and development well in A block, we analyzed and counted the relation of “four characters ”, that is lithology, physical character, oil-bearing and resistivity , and established the explanation standard of oil, gas and water layers. Mainly using data of rotatory sidewall coring and drilling well coring, we analyzed and counted reservoir lithology characters and physical properties; by using coring wells and testing oil wells, we analyzed and counted the growth condition of oil and water layers. By using data of charts method, we got the correlation of lithology, physical character and oil-bearing. Oil, gas and water layers were corresponding to different logging curve values and the curve with the highest coincidence rate was chosen as final explanation standard to direct the block perforation program.