Abstract

Objects of investigation of this work are productive carbonate layers of Osinskiy, Ust-Kutskiy and Preobrazhenskiy horizons in Vakunayskoe, Tympuchikanskoye and Ignyalinskoe fields. Due to combination of primary sedimentational features and secondary changes, layers have very comples structure and are characterized by high degree of heterogeneity of poro-perm properties. In virtue of planned field development, analysis of all geological data is needed in order to evaluate key features of layers structure, estimation of mail geological risks and definition of possible trends of distribution of increased reservoir properties. This work presents results of complex analysis of geological and geophysical data, related to carbonate layers in area of interest, and demonstrates current understanding of layers structure, as well as risks and uncertainties, related to field development.

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