致密砂岩储集层单因素定量成岩相分析——以华庆地区三叠系延长组长6_3为例  

Single Diagenetic Factor Analysis of Diagenesis Facies in the Tight Sandstone Reservoir:An Example from the Chang 6_3 Sub-member of the Yanchang Formation in the Huaqing Area,Ordos Basin

作　　者：庞军刚[1] 杨友运[1] 田建锋[1] 尚晓庆[1] 李赛[1] 陈冲[1] 黄希燕 张晨[1] 

机构地区：[1]西安石油大学地球科学与工程学院,西安710065

出　　处：《矿物岩石地球化学通报》2015年第2期369-378,共10页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：国家科技重大专项(2011ZX05044);陕西省教育厅科研计划项目(2013JK0844);西安石油大学校级科研创新团队项目

摘　　要：鄂尔多斯盆地华庆地区延长组长63为典型的致密砂岩储集层,从成岩作用角度分析该储集层形成机理及物性分布规律对研究区石油的勘探开发具有重要的意义。在物源及沉积相分析的基础上,结合铸体薄片等化验资料,分析了砂岩的主要成岩作用及绿泥石、碳酸盐岩、伊利石胶结等典型成岩产物的平面分布、成岩产物与原生粒间孔、溶孔的分布关系,并探讨了成岩产物的成因。在上述成岩产物单因素分析的基础上,综合判断划分出了绿泥石膜胶结+剩余粒间孔等7种成岩相。分析了不同成岩相类型的物性,其中绿泥石胶结-剩余粒间孔、绿泥石胶结+溶孔-粒间孔储集层物性最好。The Chang 63 sub-member of the Yangchang Formation is a typical tight sandstone reservoir in the Huaqing Area, Ordos Basin, and it is important to study its formation mechanism and distribution rule of reservoir from the aspects of diagenesis for oil exploration and development. Based on the analyses of provenance and sedimentary facies as well as the data of the cast slice and other tests, it showed that the diagenetic processes mainly include cementation, compaction and dissolition in this area. The analyses included distribution relations between planar distributions of typical diagenetic products, the relationship of diagenetic products with the distribution of primary intergranular pores and dissolved pores, and the causes of diagenetic products. Based on above analyses of the single factor of diagenetic products, it was divided into such seven diagenesis facies of chlorite film cementation residual intergranular pore, and so on. The analysis result, of physical properties of different diagenetic facies, shows that the physical property of chlorite film cementation-residual intergranular pore, chlorite cement intergranular-dissolved pore are best.

关 键 词：单因素 成岩相 华庆地区 鄂尔多斯盆地 延长组 

分 类 号：P618.13[天文地球—矿床学]