Abstract: This paper describe emphatically the characteristics of components and main diageneticevents of EK₁-EK₂ sandstones in south Zaoyuan oil field.The diagenesis is classified intotwo types according to whether it turns the physical properties of the rock formations frombetter to worse.Also,the diagenetic stages were divided and the characteristics of each stagewere described.Based on a analysis of diagenetic facies,the characteristics of the six diagenetic facies of EK₁-EK₂ in south Zaoyuan oil field were summarized,the diagenetic sequenceand porosity evolution mode of every diagenetic facies were studied,the favourable diageneticfacies and their distribution were studied,which layed a foundation for reservoir developement and evaluation.

Key words: Zaonan oilfield, Kongdian formation, sandstone, diagenesis, depo-sitional environment, facies, porosity evolution, reservoir description

摘要： 通过对枣南油田孔店组一、二段砂岩成份特征及主要成岩事件的研究,将成岩作用分成使储层储集物性变好的成岩作用和变差的成岩作用两大类.对成岩作用阶段进行了划分,并阐述了各成岩阶段的特征.在分析成岩作用历史的基础上,总结枣南油田孔一、二段的六种成岩相类型,研究各成岩相的成岩序列及孔隙演化模式,预测了有利成岩相及其分布特征,为储层开发及评价奠定基础.

关键词: 枣南油田, 孔店组, 砂岩, 成岩作用, 沉积环境, 岩相, 孔隙演化, 储集层描述