The article provides brief information on the prospects and features of clarifying the geological structure of the Vikulov deposits in one of the areas of the Krasnoleninsky arch of Western Siberia. Based on a comprehensive interpretation of 3D seismic survey materials, drilling together with analysis of well logging materials, the shape of well logging curves and core research data, the features of the facies structure of the VK1 horizon were identified. To map the facies conditions of the Vikulov deposits, reflections associated with the top and bottom of the target interval were traced, and isochrone maps and structural surfaces were obtained. Based on the analysis of isochore and isopach maps with the results of 3D seismic exploration, the planned position of anomalies such as «incision» and «channel» associated with paleo-river effects was identified. The most representative is the isochore map, which does not introduce «velocity» deformation, caused by the irregular drilled well stock. The most informative seismic attributes based on the results of the studies performed are the root-mean-square amplitude and maximum magnitude. The contoured areas of maximum values were used as trends when constructing the geological model. To establish correlations between dynamic attributes and reservoir properties in the interval of productive objects, the parameters of effective thickness and porosity coefficient were selected. To localize individual groups of wells based on the shape of intrinsic polarization curves (IP) and the values of effective thicknesses, geometrization of the shapes of channel bodies and bar deposits, the results of a comparison of maps of amplitude attributes and sedimentary sections in the Vikulov deposits interval were used. Areas of improved filtration and reservoir properties of the upper part of the Vikulov formation represent an extensive network of remains of destroyed bodies of channel and bar deposits, the forecast and mapping of which are taken into account when creating and refining of geological models, as shown using the example of the use of 3D seismic materials based on drilling results. The results of the work, taking into account the accumulated experience in the exploration and development of oil and gas fields, indicate the need to expand the geological and geophysical complex of research, not only at the prospecting and exploration stages of work, but also to increase the efficiency of field development, many of which have been in operation for a long time.
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