【摘要】 由于沉积环境的差异和沉积物供给物源的不同,各沉积体系所经历的构造、成岩演化等也各不相同,导致沉积体系内储层在空间上表现出不同程度的非均质性。辽河坳陷冷家地区下第三系沙三段自下而上划分为五个层序,其中,层序Ⅱ和Ⅴ中的水进期沉积体系主要发育中等非均质储层,其余各层序沉积体系储层主要具强非均质性。总的来说,河流作用相对较强的高水位期沉积体系储层较水进期沉积体系储层的非均质性要强,最大洪泛面同时也是物性、非均质性转换面。采用秩相关系数分析等方法,在层序地层等时框架内,定量研究沉积体系内砂、砾岩储层的纵向变化特征,建立不同沉积体系的五种储层非均质定量模式,其中线性增加型最发育。更多还原

【Abstract】 The reservoir in sedimentary system has different extent heterogeneity in space due to the difference of sedimentary environment, material supplement, tectonic action and diagenetic evolution. In Lengjia area of Liaohe depression , five sequences have been divided in the third member of Shahejie formation of Eogene system, sequence Ⅱ and Ⅴ have middle heterogeneity in SST, the others have strong heterogeneity. In a word, the HST reservoir that is mainly effected by river has more heterogeneity than that in SST, in the same time, the maximum flood surface is also the change surface of heterogeneity and physical properties. In this paper i in the equivalent time framework of sequence strata, the vertical change characteristics of sandstone and conglomerate reservoirs are researched quantitatively, and five quantitative models of reservoir heterogeneity in sedimentary system are built by using the sequential correlation coefficient analysis and some other methods, in which linear increment type is developed best.更多还原