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In DNME, the estimation parameters are the polarization parameters and electrical resistivity. As is well known, the IP anomalies can be associated not only with the presence of HC, but also with lithological changes and three-dimensional heterogeneities in the overburden. We also know about the ambiguity of the inverse problem solution. The use of modelling of various geological situations works towards a solution of controversial questions about the connection of the allocated polarization objects with HC or another source. For this purpose GeoEM software (development of M.G. Persova) is designed to solve three-dimensional geoelectric exploration problems, as well as a program ESDesigner for modeling of a deeper sectional streamer position and calculating of direct problem (development of I.Yu. Pesterev) are currently used in the SGRPC LLC. The results obtained from the synthetic models in comparison with the results of inversion and a priori data made it possible to take into account the degree of influence of the large water layer on the DNME parameters and to select target polarizing layers. It is shown that the vertical zonality of the IP fields’ positions in the section and the polarizable layers corresponding to them can be reversed.

Use of Modelling in the Interpretation of DNME Data to the Improving Forecast Accuracy