DETERMINING OF MANMADE CHANGES IN THE DEVELOPED MASSIF ON GRAVIMETRIC DATA ON THE VERKHNEKAMSKOYE SALT DEPOSIT

(Bychkov S.G. Prostolupov G.V. Shcherbinina G.P. )

The results of gravimetric studies conducted to ensure the safe development of the Verkhnekamskoye potassium salt deposit are presented. The areas of technogenic decompression in the undermined stratum are formed as a result of the deformation of the rock mass above the mine workings. The basis for the development of criteria for the separation of natural and man-made density inhomogeneities in the sub-massif are observed on the transformants of the gravity field of the anomaly, due to the areas of rock softening. The selection of the technogenic component in the aggregate of the mapped anomalies of the objects is based on the monitoring organization of geophysical measurements. According to gravimetric observations carried out with a certain periodicity, with subsequent processing and interpretation of dynamic gravity anomalies, conclusions can be drawn about the structure of the rock massif, the presence of weakened zones and trace their changes in time and space. The developed technology of separation of decompressed zones into natural and man-made ones allows to increase the operational safety of the Verkhnekamskoye salt deposit.......

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  • 2019  № 5, pp. 43-49

GRAVIMETRIC RESEARCH OF THE DEEP STRUCTURE OF THE NORTH-WESTERN PART OF THE EAST EUROPEAN PLATFORM

(Tarantin M.V. Kostitsyn V.I. Prostolupov G.V. Chadaev M.S. Gershanok V.A. )

The results of the study of the earth’s crust of the Fennoscandian shield and the North-Western part of the East European plat- form obtained on the basis of data processing and analysis for the construction of deep gravimetric sections in the Vector system are presented. Examples of forecasting and modeling of the structure of the lower crust: rising and lowering of the Moho boundary, are given. The revealed extended positive anomalies reflect the location of the gold-ore provinces of the Fennoscandian shield.......

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  • 2019  № 5, pp. 50-55

APPROXIMATE 3D ESTIMATION OF GRAVITY ANOMALIES, CAUSED BY THE SPHERICAL SHAPE OF THE EARTH

(Bychkov S.G. Simanov A.A. Kostitsyn V.I. Dolgal A.S. Khokhlova V.V. )

The article presents a method for approximate estimation of differences in gravity anomalies caused by the use of “flat” and “spherical” models of the Earth during interpretation of gravimetric survey materials within large areas. As a lower estimate of the influ- ence of the Earth surface shape, it is proposed to use the difference of the radial and vertical derivatives of the gravitational potential. The method is based on the source-like approximation of discrete values of the anomalous gravitational field; is characterized by high accuracy of the results and does not require a priori information about perturbing objects. The method possibilities are demonstrated on model examples and materials of a medium-scale gravimetric survey of an O-40 sheet (Perm region). Also considered the cartographic aspects of geo-density modeling using the Gauss-Kruger system of plane rectangular coordinates.......

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  • 2019  № 5, pp. 56-62

PREDICTING METHOD OF LAYERS ELASTIC AND MECHANICAL PROPERTIES WITH USE WELL LOGGING FOR CREATING GEOMECHANICAL MODEL OF DEVELOPMENT OBJECT

(Nekrasov A.S. Voroshilov V.A. Muryskin A.S. Drozdov S.A. Asanova K.I. )

The method of predicting the elastic-mechanical properties (EMP) of reservoir according to reconstructed acoustic logging (AL) curve when created geomechanical model. An algorithm for automated recovery of AL curve has been developed. The recovered AL curves along the well section and the distribution of the minimum horizontal stresses and difference between horizontal and bottom stresses over the deposit area are presented.......

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  • 2019  № 5, pp. 63-71

GEOPHYSICAL MONITORING THE TECHNICAL CONDITION OF THE LINING OPERATING HORIZONTAL WELLS

(Shumilov A.V. )

The article describes the technologies developed for the study of horizontal wells. The first group of technologies is associ- ated with a complex of geophysical (acoustic, radioactive, electromagnetic) methods of monitoring the technical condition of the well, the interpretation of which is implemented in the “Sonata” system. The second group of technologies is technological complexes for conducting research in directional and horizontal wells. The group includes a complex for the delivery of geophysical instruments and a complex for monitoring fluid parameters in oil wells. Examples of successful application of these groups of technologies in geophysical operations in the Perm region are given.......

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  • 2019  № 5, pp. 72-80
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