According to the problem of using reservoir geophysical techniques in potential tapping of residual oil becoming hard in Changyuan of Daqing, this paper systematically expounds well-to-seismic integration structure research and reservoir prediction. By the method of “well determine facies, slice assemble shape”, using the characteristics of well log shape difference and height difference etc, assisted by inversion slice in river course vertical evolution research, finally multi-period river classification is achieved.