• 责任者：Ma Qiang （Department of Geology ; Northwest University ; Xi’an 710069 ; China） ; Qu Hongjun
• 刊名：Acta Sedimentologica Sinica
• 出版年：2009
• 卷期：27(3)
• 关键词：沉积微相 ; sedimentary microfacies ; 砂体 ; sand bodies ; 鄂尔多斯盆地 ; Ordos Basin
• 页码：p.443-451
• 图表：6 illus., 2 tables, 29 refs.
• 分类号：1003
• issnNo：ISSN1000-0550
• isbnNo：CN62-1038/P

The studied area is located in the middle part of Yishan slope in Ordos Basin, and Chang-6 is the main target oil-layer. Understanding the sedimentary microfacies and the relationship between sedimentary microfacies and oil-gas distribution is of guiding importance to oil and gas exploration and development. By analyzing the data of drilling cores, logging, image granularities as well as casting thin sections, it can be concluded that delta front subfacies is the main sedimentary subfacies of Chang-6, which includes 6 kinds of microfacies including underwater distributary channel, river mouth bar, interdistributary bay, sheet sandstones, underwater burst fan and natural levee. The distribution of sedimentary microfacies is analyzed also.