Study on sedimentary microfacies in fine reservoir description——taking Heidimiao oil pay at 208 Block,Jilin oil field as an example

The microfacies of Heidimiao oil pay at 208 Block of Jilin oilfield are studied in details on the basis of core and logging data,various facies marks,and regional geologic setting. It is suggested that there are five main kinds of sedimentary microfacies in the area:subaqueous distributary channel,mouth bar,distal bar,sheet sand and overbank sand.After the lateral correlation,the horizontal distribution of sedimentary microfacies of different member is drawn,rendering the characteristics of the distribution and evolution of sedimentary microfacies at the area.