Abstract
Capabilities of the modern software toolkit IRAP RMS by ROXAR are exploited: tools of a stratigraphic, lithologic and petrophysical modelling, allowing three-dimensional parameters of lithology, the oil-saturated volume Kп, Kн, maps of effective and effective-oil-saturated layers, as well as the results of a hydrodynamic modelling. To evaluate correctness of the three-dimensional models built a comparison of geological and hydrodynamic characteristics of the deposits is required. The problem was solved by the elements of mathematical statistics, i.e. a step-by-step discriminatory analysis for which variables were selected on the basis of the 3D modelling results presented in the form of geological and hydrodynamic characteristics of the object explored. The analysis generated probabilistic parameters for identifying observations as belonging to the main development site – the deposit near the well 1 , for geological (Рг.п) and hydrodynamic (Ргд.п) deposit parameters, coupled with the integrated probabilistic parameter Рк. Additionally, probability maps and scattering graphs were produced which made it possible to identify two main areas: 1) one with the observations belonging to the Nozhovskoye upheaval deposit, near the well 1; 2) another with the observations not belonging to the Nozhovskoye upheaval deposit. Keywords: deposit, pay bed, upheaval, seismic survey, 3D geological model, lithologic modelling, reservoir, cap rock, field, petrophysical modelling, estimating of crude oil, 3D hydrodynamic model, correlation coefficient, discriminatory analysis, probability map.
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