Forecast of temperature changes in utilizaed thermal water of the cretaceous sediments (Pervomaysk area, Tomsk region)

Abstract

Using of alternative energy sources are considered, it is emphasized that thermal underground waters are the most perspective for Western Siberia, in general, and for the Tomsk region, in particular. Hydrogeological and geothermal characteristic of Pervomayskaya Square’s (Tomsk region) geological cross-section are given. Numerical modeling of a heatmass transfer with using of the HydroGeo software package is executed. The pattern of cretaceous aquifer systems’ temperature field changing for two schemes of operation is shown. The first scheme shows the extraction of aquifer system lower horizon’s thermal waters and returning the cooled wastewaters to its top horizons. The second scheme demonstrates the extraction of the Valanginian aquifer system’s lower part thermal waters and returning of the cooled wastewaters to the top part of the apt-alb-Cenomanian system. Analysis of the modeling results showed that the exploitation of underground thermal waters caused the formation of wastewaters displacement area’s asymmetric shape formed with underground waters. The size and shape of the displacement area are related to the technological placement of the project wells’ borehole zones and the geological cross section’s structural feature in the study area.