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oa Regression Models of Saturation and Formation Effect of Resistivity of Tight Carboniferous Terrigenous Rocks of the Northern Marginal Zone of the Dnieper-Donetsk Basin
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 18th International Conference Monitoring of Geological Processes and Ecological Condition of the Environment, Apr 2025, Volume 2025, p.1 - 5
Abstract
The main aim of the article is to look at petrophysical parameters of sandstones and siltstones of the Carboniferous period of the southern part of the Northern marginal zone of the Dnieper-Donetsk depression (the depth from 1109 to 4572 m) in normal (atmospheric) and modeling (reservoir) conditions. The studied area is promising for the presence of non-conventional hydrocarbon deposits (shale gas, gas of condensed rocks, etc.). Carboniferous tight terrigenous rocks are represented by low porosity sandstones and siltstones. In the Research laboratory of theoretical and applied geophysics of the Institute of Geology comprehensive petrophysical study was carried out, which included determination of: resistivity; the formation resistivity factor (F) and resistivity index (RI); porosity (ϕ) in atmospheric and reservoir conditions. The comprehensive analysis of petrophysical data has been resulted in a set of correlations between the porosity and the formation factor; the resistivity index and the water saturation, etc. The study subject was a collection of 71 samples of the terrigenous tight rocks.