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Features of the Structure and Mineral Composition of the Ddeposits of the Lower Pep Horizon in the Vendian Section of the Southwestern Slope of the Nepa ArchNormal access

Author: M.D. Balagurov LLC
Event name: Geomodel 2019
Session: Нефтегазоносность осадочных бассейнов Восточно-Сибирского и Тимано-Печорского регионов
Publication date: 17 September 2019
DOI: 10.3997/2214-4609.201950129
Organisations: EAGE
Language: Russian
Info: Extended abstract, PDF ( 930.67Kb )
Price: € 20

The perspective objects of oil and gas production associate with Nepa petroleum system. This object is characterized by a complex structure and the influence of secondary processes. The main objective of this study is to determine the lithological features and structure of the pore space of terrigenous Vendian rocks of the southwestern flank of the Nepa arch of Eastern Siberia. During the analysis of core material and sections, the results of various laboratory studies aimed at a detailed study of the granulometric and mineralogical composition of the target deposits, as well as the results of modeling the skeleton and porous rock space using computerized tomography of the samples, trends were obtained for the distribution of individual components and properties in the lithological composition Terrigenous deposits and their filtration-capacitive properties. A detailed descriptive description of the Vendian sandstones with different scales of research will allow to justify the correct choice of parameters and properties in the formation of the petroelastic model of the target sediment environment, which is subsequently based on qualitative and quantitative seismic prediction using seismic inversion results. Сaptured data are the basis for a detailed description of the processes of salinization and anhydrization of the porous space of reservoir rocks, which are predominantly characterized by a silt-sand composition.

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