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综合分析岩心、露头剖面和测井资料,研究认为子洲油田何家集油区主要发育三角洲相,其主力油层长4+5、长6储层主要发育三角洲平原亚相,发育水上分流河道和河道间洼地微相。不同沉积时期各沉积微相的发育程度不同,研究区三角洲平原分流河道沉积作为其骨架相十分发育。砂体受沉积相控制明显,其发育程度具有东南部优于西北部,长6优于长4+5的特征。
Based on the comprehensive analysis of core, outcrop profile and well logging data, it is concluded that the delta mainly develops in the Hejiadian oil-bearing area of Zizhou Oilfield, the main reservoir is 4 + 5 long, the Chang 6 reservoir is mainly developed deltaic subfacies, and the water distributary channel is developed Interchannel depressions microfacies. The sedimentary microfacies in different depositional stages have different degrees of development. The distributary channel sediments in the Delta plain of the study area develop very well as their skeleton facies. The sand body is obviously controlled by sedimentary facies. Its development degree is superior to the northwestern part in southeastern part and longer than that of long 4 + 5.