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从层序地层学研究入手,将珠江口盆地(东部)21～16.5Ma地层(大致相当于珠江组)划分成2个三级层序、5个体系域和16个准层序组.探讨了砂岩储层的物性、非均质性及其分布规律.通过岩心描述、遗迹古生态、测井相及地震相分析,结合本区沉积相演化特点,对按体系域或准层序组划分的7个层开展了沉积相时空演化规律的研究,分别建立了相应的沉积相模式.剖析了不同沉积微相对砂岩储层物性及非均质性的控制作用.研究表明,沉积环境对砂岩油田产能及开发效果也具有明显的影响,因此,沉积环境研究为制订合理的开发方案建立了良好的地质基础.
Beginning with the study of sequence stratigraphy, the 21 ~ 16.5Ma stratigraphy (roughly equivalent to the Zhujiang Formation) of the Pearl River Mouth Basin (eastern part) is divided into two tertiary sequences, five systematic domains and 16 quasi-sequence groups Sandstone reservoir physical properties, heterogeneity and distribution.According to core description, paleontology, logging facies and seismic facies analysis, combined with the evolution of sedimentary facies in this area, 7 layers of the sedimentary facies evolution of temporal and spatial evolution of the study, respectively, to establish the corresponding sedimentary facies patterns.Analysis of different sedimentary microfacies sandstone reservoir properties and heterogeneity of the control.The study shows that the depositional environment on sandstone oilfield productivity And the development effect has a significant impact. Therefore, the study of sedimentary environment has established a good geological foundation for the development of a reasonable development plan.