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良庄地区位于鄂尔多斯盆地陕北斜坡中南部。其三叠统延长组是一套河流和湖泊为主的碎屑沉积。本次研究区长2沉积相研究根据大量的钻井、测井及分析化验资料,运用沉积学方法综合研究该区的沉积相。划分为水上分流河道,天然堤、决口扇、河漫沼泽等微相类型。沉积相分析是研究砂体分布的关键技术,沉积相确定的正确与否直接影响着对砂体分布规律的认识。
Liangzhuang area is located in central and southern slope of northern Shaanxi Erdos Basin. Its Triassic Yanchang Formation is a river and lake-dominated detrital sediment. Based on a large number of drilling, well logging and analytical laboratory data, the sedimentary facies of the Chang 2 reservoir in this study is a comprehensive study of sedimentary facies in this area by using sedimentology. Divided into water diversion channels, natural dike, Bukou Kou, Man Man swamp and other microfacies type. Sedimentary facies analysis is the key technology to study the distribution of sand body. Whether the sedimentary facies is correct or not determines the distribution of sand body directly.