Study on Sedimentary Facies in JZS Region of Eastern Sag of Upper Section Es_3

In this paper,the principle of logging facies is first introduced,and then sedimentary facies of upper section Es3 in JZS Region of Eastern Sag is studied,the comprehensive analysis of the log facies of individual well and multi-wells have been done,finally combining with formation parameters (such as stratigraphic thickness,sandstone percentage),the distributing graph of the sedimentary facies of section Es3 is drawn.the distribution of different sedimentary facies become more clear,and at last the favorable sandbodies are pointed out,which is very important to guide reservoir forecasting and the exploration and development of oil and gas field