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运用岩心、铸体薄片、扫描电镜等分析测试方法,对鄂尔多斯盆地红柳沟油区长9、长8储层的特征进行分析对比,研究其控制因素。研究结果表明:本区延长组长9和长8主要为三角洲前缘沉积,储层非均质性较强,物性较差,属特低孔隙度,特低渗透率储层。通过对储层控制因素的研究得出长9油层组的物性略好于长8油层组。
The characteristics of Chang 9 and Chang 8 reservoirs in Hongliugou oil zone, Ordos Basin, are analyzed and compared using the analysis and testing methods such as core, cast slab and scanning electron microscope, and the control factors are studied. The results show that the extension of Chang 9 and Chang 8 in this area are mainly delta front sediments, which have strong reservoir heterogeneity and poor physical properties, and belong to ultra-low porosity and ultra-low permeability reservoirs. Through the study of reservoir controlling factors, it is concluded that the physical properties of Chang 9 reservoir are slightly better than that of Chang 8 reservoir.