Research on Reservoir Heterogeneity of Complex Region

Abstract

From the context of this area, combined with the well, core and logging data, the characteristics of heterogeneity of this region can be studied. Through calculating the parameters like porosity, permeability, saturation, permeability coefficient of variation, sudden coefficient and differential, the heterogeneity in the layer and the plane has been studied. The sand groups in the Chang 6 reservoir mainly are delta front sand underwater distributary channel sand body, the heterogeneity in the layer is weak; In the plane, the heterogeneity of distributary channel sand body is weak, while the one in estuary dam, front sheet sands and underwater natural levee is strong. Through comprehensive analysis, Chang 6 reservoir in Hulangmao region is strong heterogeneity reservoir. After comparing permeability coefficient of variation, sudden coefficient and differential of 3 layer and 5 layer in Chang 6,it can conclude that the development effect of 5 layer is better than 3 layer in the process of water-flooding development. This research can be some guidance to some area in the mainland.