| Summary: | The studied deposit is located on the territory of the Republic of Tatarstan (Russia). The reservoir formation is represented by bituminous sandstone. The deposit is being developed by steam-gravity drainage (SAGD). The researchers noted that the reservoir has the variability of petrophysical parameters in thickness. The correct adjustment of the lithological model will allow us to assess the variability of the reservoir characteristics by its thickness, which can better predict its reservoir and elastic properties. The article presents the results of the modeling of the mineralogical composition of rocks and the coefficient of total porosity. Results received using the statistical reverse method of constructing a volume model. This method is based on geophysical well logging used to predict the content of rock-forming components of the studied sediments. The use of core data, in particular X-ray phase analysis, made it possible to evaluate the results of the lithological model.
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