• 责任者：Ma Yao (State Key Laboratory of Continental Dynamics ; Department of Geology ; Northwest University ; Xi’an 710069 ; China) ; Li Wenhou
• 刊名：Geological Bulletin of China
• 出版年：2013
• 卷期：32(9)
• 关键词：砂岩储集层 ; sandstone reservoirs ; 低渗透储集层 ; low permeability reservoirs ; 鄂尔多斯盆地 ; Ordos Basin
• 页码：p.1471-1476
• 图表：5 illus., 12 refs.
• 分类号：1003
• issnNo：ISSN1671-2552
• isbnNo：CN11-4648/P

     Western Nanliang area is located in southwestern Shanbei slope of the Ordos Basin, and Chang 6 oil-bearing formation is its main exploration target. Delta front subfacies is developed in the northeast and deep lake facies occurs in the south of the study area. The sandstone reservoir is composed of arkose sandstone and lithic arkose sandstone. The main types of cements include calcite ce- ments, illite cements, chlorite cements and siliceous cements. All of these cements reduce the reservoir quality of the sandstone. The authors have reached the conclusion that Chang 6 oil-bearing formation is a low porosity and ultra-low permeability reservoir, as evi- denced by studying the property parameters such as porosity and permeability. According to capillary pressure curves, the pore throat structure is of type Ⅱ. Diagenesis is the main factor influencing the reservoir property.