Research on Diagenetic Difference of Various Structural Belts in the Halfgraben-Like
- 责任者：Tian Jingchun (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Tan Xianfeng
- 刊名：Geoscience
- 出版年：2009
- 卷期：23(4)
- 关键词：成岩作用 ; diagenesis ; 碎屑岩 ; clastic rocks ; 东营凹陷 ; Dongying Sag
- 页码：p.683-690
- 图表：8 illus., 17 refs.
- 分类号：1003
- issnNo：ISSN1000-8527
- isbnNo：CN11-2035/P
Dongying depression is a halfgraben-like rift lake basin with the characteristics of steep slope developed in the north while gentle slope in the south during Shahejie period. The depression can be divided into four structural zones, i.e. steep slope zone, gentle slope zone, sag zone and build-up zone. There are various diageneses developed in the Shahejie Formation, including compaction, pressolution, solution and cementation, and so on. Diagenses developed in different structural belts are always different. Compaction during earlier period can impress more effect on the reservoirs than that during later period. The amounts of carbonate cements and clays vary in different structural belts. Therefore, it is quite important theoretically and practically to study such differences among various structural belts for lithological oil and gas pool exploration.