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- W2380343669 abstract "Chlorite rim is the most important occurrence of authigenic chlorite as a common kind of clay cements in sandstone,and it is attracted by peoplesspecial attention because it always accompanies with the high quality sandstone reservoirs.Aiming at some debates about chlorite rim in the previous researches,this paper studies the sandstone of Chang 9oil-bearing segment of Triassic Yanchang Formation in the Zhenjing area of Ordos Basin.Through researching casting thin section,scanning electron microscope and porosity-permeability data,this paper discusses such questions again,that is,the forming stage of chlorite rim,the effect of chlorite rim on diagenesis,and the relationship ofchlorite rim with the reservoir quality of sandstone.On the basis of the research results,some opinions different from the previous research are acquired and the following conclusions are obtained.1)The chlorite rim forms at the A-B phase of earlier diagenesis stage.2)The chlorite rim can not enhanced the mechanical strength of rocks and the ability of resisting compaction.3)The reason of the ability of the chlorite rim preventing the secondary enlargement of quartz is that the pore-water forming the chlorite rim has different pH value and Sr concentration from the pore-water suitable for quartz growing.However,the chlorite rim bears no relationship with the forming of authigenic quartz.4)The chlorite rim can not enhance the reservoir quality of sandstone obviously.However,the appearance of the chlorite rim indicates the abundance of the primary intergranular pore in sandstone." @default.
- W2380343669 created "2016-06-24" @default.
- W2380343669 creator A5054389074 @default.
- W2380343669 date "2016-01-01" @default.
- W2380343669 modified "2023-09-24" @default.
- W2380343669 title "Further study of chlorite rim in sandstone:evidences from Yanchang Formation in Zhenjing area,Ordos Basin,China" @default.
- W2380343669 hasPublicationYear "2016" @default.
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