Abstract
The Kezisuhumu Formation in the Upper Sinian is composed of carbonate rock and terrigenous detrital rock deposited in coast envirgnment,which could be subdivided into shoreface,foreshore,algal flat and tital flat subenvironment.Thormbolite-dolomitite in the algal flat and micro-dolomite in the tidal flat underwent dolomitization,dissolution,cementation and neomorphism.The porosity in the thormbolite-dolomitite was speedy de-clined by the cementation,but the reservoir spaces were produced by the dissolution,dolomitization and neomorphism.The analysis results of physical property for the thorm-bolite-dolomitite shows that the rock has good reservoir property.
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