Based on the analysis of core and logging ,the type and
distribution of sedimentay microfacies of Ⅴ 、Ⅵ、Ⅶ sand
formation of the S2 section in Xia 52 faulted block of Linnan
oil field were studied. The results show that the S2 section
belongs to delta plain deposit . It is further divided into 4 sub -
facieses ( bdlta plain distributary channel , inter - channel area ,
crevasse splay and crevasse channel ) . Furthermore , on the
basis of above analysis ,and through the correlation between
wells , the plan distribution of sedimentary microfacies of
different sand section were mapped ,and the evolvement rule of
sedimentary microfacies was revealed. These are benefit for
guiding oil exploration. The favorable facies belt is delta plain
distributary channel.
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