Abstract: the slope of the southern margin of Hashan tectonic zone is near Hararat Mountains in the northwest, and is connected with the Wuxia fault belt and Mahu sag in the southeast. The reserves of oil and gas are abundant, and the reservoir characteristics are complex and changeable. The exploration degree in this area is limited and the main oil-bearing blocks are still unclear. Based on the study of sedimentary facies and reservoir characteristics, this paper takes the first member of Badaowan formation of Jurassic as an example, analyzing the influence of correlation between reservoir parameters on oil storage performance. This paper quantitatively evaluates each reservoir oil storage performance by using grey relational analysis method. The correlation between the reservoir parameters and comprehensive oil storage performance are clarified, and the main oil bearing zone is pointed out. The results show that the first member of the Badaowan formation can be divided into four types of reservoirs. Type Ⅰ and type Ⅱ are favorable reservoirs, mainly distributed in areas of Hq2、Hq1 and Hsha2 wells. The sedimentary facies are mainly sandy conglomerate and fine sandstone with good physical properties. Type II and III reservoirs are widely distributed, being the focus of the future exploration and development.