When conducting crosshole seismic at the Verkhnekamskoe potash deposit, head waves of high intensity are registered. The article discusses the mechanism of reflected waves generation from the propagation of head waves bottom up, which can be used for constructing a deep seismic section. The reciprocity principle makes it possible to plot such sections for both the receiving and source boreholes. Reciprocity relation makes it possible to plot these sections for both the receiving and source boreholes. The data obtained supplement the results of tomographic calculation of the velocity characteristics of the interwell space.......

The article is devoted to the development and of new method of seismic and well data comparison for quantitative prediction of reservoir effective thicknesses using machine-learning algorithms. We found out the influence of a different step of calculating attributes on the predictive ability of mathematical models for quantitative prediction. As a result of this study a program was written and integrated into a geological modelling package.......

Rock fracturing study methods based on 3D seismic survey, in particular, duplex wave migration, are presented. An example of using the results of rock fracturing study in geological and hydrodynamic modeling of deposits taking into account double porosity is also presented.......

The results of studying the changes in the state of rocks in one of the sections of the Verkhnekamsk potassium salt deposit according to gravimetric data are presented. Negative local anomalies outline the natural zones of decompression, gravimetric monitoring records the process of continuing decompression of rocks. A joint interpretation of local gravity anomalies and dynamic anomalies allows us to build reliable three-dimensional models of the water-proof stratum, which includes a change in density over time, thereby determining the genesis of decompression zones and classifying the anomalies according to their degree of danger for mining operations, as well as predicting subsidence Earth's surface over the undermined massif of rocks.......

Experimental studies, aimed at improving the transformation accuracy of magnetic exploration data by the method of analytical approximation with source-shaped functions, which are fields of elementary sources, were carried out. Determined that differences in the magnetization vectors directions of anomalous objects and elementary sources approximating them do not have a noticeable effect on resulting transforms. Significant distortions of magnetic field transforms, concerned with edge parts of the initial data setting area, which occur when using single-level approximation structures, are fixed. These distortions can be suppressed by placing equivalent sources at different depths, while matching these depths with the pitch of the initial data presentation network. The results of spatially combined two-level analytical approximation of aeromagnetic survey data performed in the north-west of the Siberian platform are given.......