Abstract: According to drilling/logging data and production performance information,the hydrocarbon abundance con- ditions in nearshore sublacustrine fan in Rehetai Forma- tion in Xing-Bei area were investigated,and then a framework of subzone geologic correlation was estab- lished,six kinds of sedimentary microfacies were identi- fied and the spatial distribution of different periods reser- voir sand and petroleum reservoir enrichment rules were analyzed.The results pointed out the middle-fan frontal sand,middle-fan inter-channel sand and channel lateral margin sand were favorable reservoir facies belts in the study area,which provided reference for high-speed and high-efficiency development of similar type reservoirs in Liaohe Basin.