Study of reservoir sedimentary microfacies in lower subblock of Funing Formation of Paleogene in Taixing oilfield

Through analyses of drilling and well logging,the authors set up a relationship of well logging facies and sedimentary microfacies in lower subblock of Funing Formation of Paleogene in Taixing oilfield and study the planar distribution characters of the sedimentary microfacies of Taixing oilfield and the sedimentary facies of various sand bodies in the major oil-gas bearing units.It is concluded that the types of major sandbody sedimentary microfacies in lower subblock of Funing Formation of Paleogene are as follows:underwater distributary channel,river flood land,entry sand bar and sheeted sand sedimentary microfacies.