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为了研究鄂尔多斯盆地志丹—甘泉地区上古生界各时期的沉积背景及沉积相特征,在大量钻井岩心观察分析的基础上,结合鄂尔多斯盆地区域地质背景,利用岩性、沉积构造、粒度分析、古生物等资料,通过点、线、面的方式鉴别沉积相类型,确定研究区沉积相类型为三角洲相和障壁岛亚相,其中三角洲前缘为良好储层的主要发育场所,也是油气的主要富集区。
In order to study the sedimentary background and sedimentary facies characteristics of the Upper Paleozoic in the Zhidan-Oganquan area, Ordos Basin, based on the observation and analysis of a large number of drilling cores, combining with the regional geological background in the Ordos Basin and using lithology, sedimentary structure, grain size analysis, paleontology And other data. The types of sedimentary facies are identified by point, line and surface. The sedimentary facies of the study area are identified as delta facies and barrier wall subfacies. The delta front is the main development site for good reservoirs and also the major hydrocarbon enrichment Area.