Analysis of Provenance and Sedimentary Facies of Neogene Shawan Formation in Chepaizi Area
详细信息
- 责任者：Yang Kai (School of Geosciences ; China University of Petroleum ; Qingdao 266580 ; China) ; Dong Chenqiang
- 刊名：Journal of China University of Petroleum
- 出版年：2012
- 卷期：36(3)
- 关键词：砂岩储集层 ; sandstone reservoirs ; 油气勘探 ; petroleum exploration ; 准噶尔盆地 ; Junggar Basin
- 页码：p.7-13,19
- 图表：illus., 12 refs.
- 分类号：1003
- issnNo：ISSN1673-5005
- isbnNo：CN37-1441/TE
摘要
Based on the previous studies and by using the data of seismic,logging,cores,slice and geochemical,the source direction of Shawan group of study area was confirmed through various evidence of sandstone thickness,sandstone clastic composition,paleo-geomorphology and sandstone heavy mineral content.The sedimentary facies and Shawan group exhibition characteristics were studied by means of the data and method of petrology,grain size analysis,log facies and seismic facies.The sedimentary facies model was studied by combining with the construction background,paleo-geomorphology and the structure style of sequence stratigraphic system. The results show that the provenance of Shawan area includes two source system directions. Moreover,the extension distance of southwest direction of provenance is long and the influence range is wide. The subaqueous distributary channel sand of braided stream delta front is easy to form the type of pointed lithologic trap and the coastal-shallow lake sand develops the lens lithologic trap easily.
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