The Study Of Sedimentary Characteristics And Reservoir Prediction Of Wuerhe Formation Of Permian In The Madong Slope,Junggar Basin

Based on the comprehensive development of regional geological investigation and study area related literature collection on the study area to 12 wells,core,logging and laboratory analysis data for the study of drilling data.According to the morphological characteristics,log stratigraphic thickness and sedimentary cycle,on the east slope of Mahu Permian Wuerhe formation and comprehensive classification and correlation;Study on petrology Wuerhe signs,logging facies,facies markers,reference reservoir thickness,sand ratio,determine the types of sedimentary microfacies in the Madong slope;using granularity analysis,scanning electron microscope,mercury injection data analysis data,in-depth study of Wuerhe reservoir petrology the pore structure characteristics,physical characteristics,and according to the reservoir characteristics and reservoir distribution,application of seismic inversion of reservoir Prediction study.The Strata of Wuerhe P₂w₄ can be subdivided into P₂w₄¹,P₂w₄²,P₂w₄³,and the thickness of each layer is different,generally between 30⁷0m;Madong Wuerhe in study area develops pro-delta facies and the distributary channel,inter-distributary bay microfacies.Madong area reservoir space is dominated by secondary pores,and it is the low pore and low permeability reservoir.