Study On Reservoir Modeling Of Shan 2 Member, Shanxi Formation Within The Frontier Area, Yanchang Gas Field

The main part of Ordos basin is a low-grade slope, less than 10 dip, called yishan slope. Gas, stemming from coal strata in Carboniferous and Permian’s transitional facies, is ubiquitous within Upper Paleozoic tight sand. Yanchang oil field is located in centurial and southern portion of Yishan slope, the prospecting area covering 10755.1km2. . During recent years, the work of oil prospecting makes remarkable headway, many wells seeing high gas flow, which suggests that Yanchang oil field has a big potential and is expected to economically contribute to Shanxi Yanchang Petroleum group.Upper Paleozoic gas-bearing sand bodies is stratigraphically classified and compared, based on which spatial distributional characterization of all sorts of reservoir sand bodies is studied. Analyze depositional microfacies by recognizing all kinds of facies indicators. Analysis of the data from core example testing and thin sections leads to understanding of the impact of physical property on diagenesis. Build the well-log interpretation model by studying on rock-and-electric relation. Reservoir is accomplished by using the software, PETREL 2004, from Schlumberger. The project tasks can be broken down into three phases: data collection, structural mapping, and 3-D geologic modeling.The control of all kinds of reservoir on reservoir characterization is determined by describing spatial distribution of physical property, sand connectivities and heterogeneity characterization. Through the steps mentioned above, a 3-D geological model is finally established.