鄂尔多斯盆地河庄地区长2油层组沉积相研究

河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，分流间洼地、分流河道间沼泽、分流间湾等微相类型。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。

Research on the Sedimentary Facies of Chang 2 Oil-bearing Formation in He Zhuang Area,Ordos Basin

He Zhuang district is located in Erdos Basin,south-central of North Shaanxi Slope.The Yanchang formation of triassic series there is mainly a set of river and lake clastic deposit.The study on sedimentary facies of Chang^2 oil-bearing formation in the studying district is a comprehensive study using sedimentology based on drilling cores data,logging data and testing and analytic data. The microfacies include overwater distributary channel,inter-channel depressions,inter-channel swamp,and interdistributary bay. The Sedimentary facies analysis is the key technology of studying sand distribution,and that the determination of sedimentary facies is right or not affects the understanding of sand distribution law directly.