Xijiang302 Oil Field is located at the substructural belt in southern Huizhou Depression in the Pearl River Mouth basinThis oilfield is mainly distributed in the Zhujiang Formation and the lower part of the Hanjiang Formation of Miocene of Neogene The sedimentary facies of the studied formation is a delta in Xijiang 302 Oil Field In this area, the types of sedimentary microfacies include distributary channel, interdistributary, natural levee and crevasse splay in the delta plain and underwater distributary channel, mouth bar,distributary bar and sand sheet in the delta front The major sandbodies, such as distributary channel, underwater distributary channel and mouth bar, relatively, are thick and continuous Meanwhile, the studied formation consists of 4 longterm base level cycles and 15 midterm base level cycles in Xijiang 302 oilfield On the basis of these, 4 types of logging models about shortterm and supper shortterm base level cycles are summarized in this areaAs for this area, approximately, shortterm base level cycle, which is equal to the fifth order sequence, can be correlated with reservoir strata,while supper shortterm cycle, which corresponds to the sixth order sequence,corresponds to sand body and sedimentary microfacies When correlating the sand bodies based on high resolution sequence stratigraphy, it is very important to take into account the scale of the work area, the tectonic position,the diversities of the sedimentary microfacies and the well spacingIn Xijiang 302 Oil Field, at the reservoir top, the distributary channel or underwater distributary channel mostly with base level rising half cycle is apt to flood,however, the sand bar(distributary mouth bar or distal bar) or distributary bay mainly with base level falling half cycle is not prone to flood ,among which it is propitious to remaining oil distribution.