According to drilling and core analysis testing and synthetically using the various facies characteristics, the authors point out that the study area belongs to the braided stream facies deposition, and analyze the lithology of four kinds of sedimentary microfacies, such as braided channel, channel bar, natural levee, and flood plain, and the characteristics of cores. The sedimentary microfacies model and reservoir model of the study area are built by using lots of indicators. The modeling results show that under the control of facies models, the reservoir model can show the facts better, and the model is fit for developing the remaining oil and provides precise data for reservoir value simulation and reliable evidences for accurately evaluating reservoir features, adjusting infill wells and developing the potential of remaining oil.