Using sedimentary micro-facies and reservoir meticulous prediction techniques of GeoFacies software, UltraDo made a good effect in meticulous reservoir description. This software focuses on geology research and emphasizes sedimentary facies study by combining well log facies and seismic facies from facies analysis using well logs and seismic information to complete sedimentary comprehensive research and meticulous interpretation. On this basis, controlled by sedimentary facies, through geo-modeling and inversion upon both well logs and seismic data, UltraDo established meticulous data volume of reservoir, forecast reservoir distribution between wells, recognized and characterized targets.