The sub-layer lower NmⅠ3 in the south area of QHD32-6 oilfield is a multi-staged channel sand, therefore, how to correlate it into single stage is important for its development potential. Using the high resolution sequence stratigraphy, the different-staged channel sand can be identified and correlated. There are main 3 stacking patterns, which are superimposition type, cutting type and single channel type. Furthermore, the characteristics of micro-facies within the single-stage sand and interbed distribution can be studied. The tracer in experimental well group shows that, the driving rate of waterflooding front from one stage sand body to another is lower than the value in the same-staged sand body where there is also a discrepancy because of the change of microfacies. This paper con? cludes that, for the multi-staged channel sand, the stacking patterns, changing microfacies and interbeds distribution are the main factors effecting production performance. Meanwhile, which one is the most important among those factors depends on the relationship between the two sand bodies within which the injector and producer layers are located.