Depositional Characteristics of Shawan Formation in Neogene of Chepaizi Area, Junggar Basin
详细信息
- 责任者：Yang Shaochun (College of Geo-Resources and Information ; China University of Petroleum ; Qingdao 266555 ; China) ; Meng Xiangmei
- 刊名：Journal of China University of Petroleum
- 出版年：2011
- 卷期：35(2)
- 关键词：沉积体系 ; depositional system ; 砂岩储集层 ; sandstone reservoirs ; 准噶尔盆地 ; Junggar Basin
- 页码：p.20-24,38
- 图表：7 illus., 2 tables, 12 refs.
- 分类号：1003
- issnNo：ISSN1673-5005
- isbnNo：CN37-1441/TE
摘要
In this paper, the depositional characteristics of Shawan formation in Neogene of Chepaizi area were researched. The results show that the depositional system of Shawan Formation is braided river delta-lacustrine facies and the sedimentary deposit comes from northwestern Zaire Hill. The microfacies of well Pai 2 is underwater distributary channel deposit but not beach or bar. The sedimentary facies is typical of northwest-southeast distribution. Vertically, the sedimentary facies have undergone changes from braided river delta front subfacies to longshore shallow lacustrine subfacies to braided river delta plain subfacies.