详细信息   

• 责任者：Liu Yaying (Resources and Information College ; China University of Petroleum ; Beijing 102249 ; China) ; Xu Huaimin
• 刊名：Petroleum Geology & Oilfield Development in Daqing
• 出版年：2010
• 卷期：29(3)
• 关键词：砂岩储集层 ; sandstone reservoirs ; 层序地层学 ; sequence stratigraphy ; 准噶尔盆地 ; Junggar Basin
• 页码：p.12-17
• 图表：illus., 1 table, 13 refs.
• 分类号：1003
• issnNo：ISSN1000-3754
• isbnNo：CN23-1286/TQ

摘要

By means of the integrated data analysis of drilling, log, seismic interpretation, core observation and experimental analyses and so on and moreover according to the sequence division principles, seven sequence interfaces are identified in Jurassic system, and seven sequences and eighteen system tracts are correspondingly divided as well. Among them, Sequence “JSQT” is denuded in the research area and only Sequence Interface SB7 is identified. The reservoir sandbodies are controlled by sequence framework, the favorable reservoir sandstones are mostly formed in the lowstand system tract （LST）when the lake level relatively declines. The main reservoir sandbody types include the sandbodies of subaqueous distributary channels in braided river delta, channel sandbodies in braided river, braided channel sandbodies in alluvial fan, shallow-shore lacustrine beach bar sandbodies. They have middle to low porosities and middle to ultra low permeabilities. For the reservoir properties, the former is much better than the others.