Distribution of the interbeds in the 2nd Oil Formation of the He-3 Member of the Shuanghe oil field, Henan

The interbeds within the hydrocarbon reservoirs may have exerted an influence on oil field development and residual oil distribution. The types, genesis and distribution of the interbeds are described in detail in the present paper on the basis of well logs, and vary in different base-level cycles and sedimentary microfacies. The results of research also show that a close correlation exists between individual interbeds described herein and A/S ratios and sediment flux.