What are the characteristics of each rock texture category of oil reservoirs?
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Oil reservoirs can be categorized into different rock texture categories based on their characteristics. These categories include sandstones, limestones, dolomites, conglomerates, shales, igneous rocks, and metamorphic rocks . Sandstones and carbonate rocks are the most common types of reservoir rocks, with sandstones accounting for about 30% of global oil and gas production and carbonate rocks accounting for about 60% . The characteristics of these rock types are influenced by various natural processes and events that occur over geologic times . Sedimentary rock types, structural and stratigraphic characteristics, and the presence of faults and fractures are important factors in determining reservoir heterogeneities . Understanding the depositional environment and natural events that shape these characteristics is crucial for studying petroleum reservoirs .
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