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PETROPHYSICAL MODEL FOR POROSITY DETERMINATION OF COLLECTORS WITH DIFFERENT CONTENT OF CLAY MATERIALS ACCORDING TO THE ACOUSTICAL AND RADIOACTIVE RESEARCHES
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Monitoring 2019, Nov 2019, Volume 2019, p.1 - 5
Abstract
According to the results of studies of the geological structure of productive rocks-collectors of perspective horizons of gas deposits of the Precarpathian Strait and the Dnieper-Donetsk basin, it is established that gas-saturated layers are represented by monomictic sandstones and siltstone with different types of cement. The analysis of information from the literature and methodological recommendations for the determination of porosity showed that the clay greatly affects the results of geophysical studies of wells, in particular acoustic and neutron logs. In this work the possibility of taking clay into account when determining the porosity coefficient using the results of gamma logging studies is considered. As a result of the simulation, a new unified petrophysical model for determining the porosity of reservoir rocks with different content of clay material was obtained, according to the well studies of acoustic and gamma logs.