Abstract: This software is composed of a series of discriminant models based on the detailed compari-son studies between the sedimentological features of cores and the geophysical characteristics of well loggings and seismic sections. Containing 3 parts i.e. basic sedimetological program,well log processing program and seismic processing program,the software has been successfully used to predict the oil/gas traps in Yingtai oil field of the Songliao Basin(NE China,Cretaceous)by the systermatic mapping of sedimentary microfacies and the detailed lateral correlation of thin bedded reservoir sand bodies.