Issues of the journals for 2019 y.

ARTIFICIAL ARTIFACTS IN THE REFLECTION SEISMIC RESULTS ON URBANIZED AND MINING ENGINEERING SITES

(Sanfirov I.A. Babkin A.I. Yaroslavtsev A.G. Zhikin A.A. )

Shallow and engineering reflection seismic surveys on the developed urbanized territories and industrial facilities are subject to the intense influence of various artificial noise. In such conditions, it is necessary to use specialized technologies for processing and planning registration systems, which make it possible to increase the efficiency of suppressing coherent and random noise. The article discusses the main examples of the noise manifestation with certain space-time orientation and shows examples of “artifacts” caused by the presence of unsuppressed noise in the wave fields.......

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  • 2019  № 5, pp. 4-12

POSSIBILITIES OF P-WAVES VELOCITY AZIMUTAL ANALYSIS FOR EVALUATION OF SUBVERTICAL FRACTURES

(Sanfirov I.A. Laptev A.P. Dushkin A.B. Glotov A.A. )

The question of carrying out azimuth velocity analysis for standard excitation parameters and recording of 3D seismic data surveys is considered. The method was tested on an area with zones of development of anticline folds of tectonic genesis, separated by linear-mobile zones. It is shown that the relative anisotropy of the velocities of longitudinal waves can reach significant values in the zones of influence on the environment of disjunctive disturbances. When studying subvertical fracturing of carbonate rocks, azimuthal changes of the P-wave velocities can be an effective tool for obtaining information about seismic anisotropy.......

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  • 2019  № 5, pp. 13-19

MODELLING AZIMUTHAL AVO SIGNAL FROM ANISOTROPIC GEOLOGIC MEDIA

(Ladeyshchikov S.V. Seletkov I.A. )

One of the most important factors affecting the efficiency of exploitation of hydrocarbon fields, safety drilling and optimization of exploratory and production wells location is rock fracturing, which is associated with anisotropy. Presents the results of the method of studying anisotropy using AVO azimuthal analysis based on model data. The AVO signal from the isotropic media and media with HTI anisotropy were compared. The sensitivity of this technique for studying anisotropic properties to different levels of seismic noise was also estimated.......

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  • 2019  № 5, pp. 20-25

INFLUENCE OF SOURCES AND RECEIVERS DIRECTIVITY ON RESULTS OF MINE SEISMIC SURVEY

(Voroshilov V.A. Zhukov A.A. Prigara A.M. Tsarev R.I. Shustkina I.Yu. )

Research on the influence of sources and receivers directivity on the results of mine seismic survey under conditions of Verkhnekamskoye salt deposit (VKSD) is presented. For the purposes seismic survey works have been performed by reflection method using common depth point seismic on P and S waves using different combinations for location of the lines of reception points and source points. The research were performed with two-component (Y-Z) wavefield registration. Based on the research results an optimal configuration of sources and receivers directivity has been selected for the method of mine seismic survey on shear waves with reflection separation (PVRO VNIIG), developed by the article authors.......

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  • 2019  № 5, pp. 26-36

IMPROVEMENT OF THE MODEL DESCRIBING INFLUENCE OF INDUCED FACTORS FOR PREDICTION SEISMIC ACTIVITY IN SOLIKAMSK-2 MINE

(Dyagilev R.A. Zlobina T.V. )

The article shows results of spatial-temporal analysis of seismicity observed in Solikamsk-2 mine of Verkhnekamskoye potash deposit. An influence on seismic activity was considered for following factors: openings age, number of mined-out layers and type together with age of backfilling. Parameters of the model describing their influence on seismic activity were evaluated with the involvement of new data since 2014 till 2018 that previously were not used in statistics.......

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  • 2019  № 5, pp. 37-42
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