Diagenesis and Porosity Evolution of Chang-6 Oil-Bearing Formation in Zhiluo Oilfield of
详细信息
- 责任者：Wang Caiping (School of Petroleum Resources ; Xi’an Shiyou University ; Xi’an 710065 ; China)
- 刊名：Journal of Earth Sciences and Environment
- 出版年：2010
- 卷期：32(2)
- 关键词：孔隙度 ; porosity ; 砂岩储集层 ; sandstone reservoirs ; 鄂尔多斯盆地 ; Ordos Basin
- 页码：p.161-165
- 图表：4 illus., 1 table, 10 refs.
- 分类号：1003
- issnNo：ISSN1672-6561
- isbnNo：CN61-1423/P
摘要
Chang-6 Oil-bearing Formation of Triassic Yanchang Formation in Zhiluo Oilfield of Ordos Basin is weightily exploited in recent years.Characteristic of petrology and diagenesis of the oil-bearing formation was studied.The result showed that Chang-6 Oil-bearing Formation was composed by fine-grained and debris feldspar sandstones;sandstone experienced complex diagenesis including compaction,cementation,alteration and dissolution;diagenesis reached A period in the late diagenetic stage.Diagenesis controlled reservoir porosity of sandstones in which compaction and cementation caused low permeability while secondary vugular-solution pore improved the reservoir property and controlled distribution characteristics of Chang-6 Oil-bearing Formation with relatively high permeability and porosity.
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