1. College of Earth Science, Jilin University, Changchun 130061, China;
2. Changchun Oil Plant of Jilin Oilfield Company, Changchun 138001, China

On the basis of secondary log interpretation and stratigraphic correlation,this study established core-logging facies model and mapped planar sedimentary microfacies of single sand layer. According to porosity,permeability and effective thickness parameters,and using H·K/φ as the main controlled parameter,four flow units(��,��,�� and ��)were identified and their planar distributions were mapped by "Facies Control". Types ��and�� are efficient flow units,i.e. water-flooded units,whereas types �� and �� are inefficient flow units,i.e. potential remaining oil occurrence units. Based on flow units,remaining oil distribution area in channel and interchannel is determined. From this study,a new method is provided by accurate conventional data analysis of remaining oil distribution on high water cut stage of oil field.