Forecast on the Advantageous Area Distribution of Tight Sandstone Sweet Spots Reservoir in Sangonghe Formation Wenjisang Area of Turpan-Hami Basin

Wenjisang area in Turpan-Hami Basin developed multi-stage braided river delta in the Jurassic Sangonghe Formation with reservoirs dominated by low porosity and low permeability.Itssweet spotin tight sandstone is mainly controlled by fractures and sedimentary micro-facies of delta front underwater distributary channel.Based on the comprehensive analysis of tight sandstone reservoir geophysical response characteristics,by the application of seismic inversion,spectral decomposition,seismic attribute slicing technology and fracture prediction technology,this article portrayed and described the plane distribution characteristics and sedimentary evolution of sand-body from multi-stage braided river delta front underwater distributary channel in the Wenjisang area.Advantageous areas of sweet spots in tight sandstone reservoirs and the exploration targets are predicted.