《Table 2 Facies/diagenetic characteristics and pore system properties of the identified rock types i

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《Integrated Rock Typing of the Grainstone Facies in a Sequence Framework: a Case from the Jurassic Arab Formation in the Persian Gulf》

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The rock types in the Arab Formation are identified by integration of depositional characteristics，diagenetic overprints，pore system properties and poroperm distribution.To construct a framework for rock type correlation in the studied wells，sequences were discriminated on the basis of facies characteristics and diagenetic features.Six rock types were differentiated in the grainstones of the Arab Formation.Figure 8 shows representative thin section and core photographs of each rock type.Because of their diagenetic imprints，there is a large dispersal on the porositypermeability plot of this facies（Fig.9a）.In these facies，porosity and permeability vary between 2.4 to 37.10%and 0.1 to 1612 m D，respectively.The porositypermeability distribution indicates that the combined method used in this research can effectively differentiate various rock types（Fig.9bf，h）.The facies characteristics，diagenetic features and poresystem properties of each rock type are presented in Table2.