Author:
Korolev E A,Eskin A A,Khuzina A F,Korolev A E,Barieva E R
Abstract
Abstract
The article discusses the structure of multilayer oil deposits of the Vereyian horizon in the territory of the Tatarstan Republic. It is shown that in the sections the reservoir rocks are different facies of limestones (mostly grainstone), sandstones and siltstones. The reservoir rocks were formed in the regressive stage of the development of the marine sedimentation basin. Oil deposits of the Vereyian horizon have experienced flooding processes with formation edgewater. The penetration of groundwater into reservoir rocks led to uneven oxidation of oils in oil-producing structures. With weak waterflooding, dolomite and pyrite were formed in the reservoir rocks, with strong waterflooding, anhydrite aggregates appear.
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