Sandstone and carbonate rocks are rich in voids and fractures, and are thought to be the ideal reservoir
The chemical activity of carbonate minerals is relatively high. Second the difference of diagenesis and reservoir properties have important significance. In addition to carbonate concretions and soil development, most siliceous clastic strata of early diagenesis only plays a secondary role, and the characteristics of carbonate rock is widely changed early diagenesis and porosity.
First, the location of the sediment is different, the sandstone is generated in different places, and the carbonate rocks are formed in situ;
