CONTROLLED DIRECTIONAL TRANSFORM OF SEISMIC ATTRIBUTES FOR GEOLOGICAL

(Rozhenkov E.A. )

Various geobodies have specific shape on vertical and horizontal projections resulting in geometrically anisotropic features in seismic data. Such features can be enhanced by performing controlled directional transform of seismic attributes based on local linear Radon transform. The approach is to represent results of such transform as polar diagrams, which are then used for anisotropy magnitude estimation as well as number of its prevailing directions and their azimuths. These data are helpful in emphasizing anisotropic features and can even help to distinguish some of them (faults and river channels). Other possible applications of this method include azimuthal filtering and automatic tracking. The proposed approach aids geological interpretation in a variety of ways while being flexible to perform on different structural and dynamic attributes.......

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  • 2020  № 6, pp. 74-76

SEISMIC VIBRATOR START DELAY CALCULATION BASED ON ITS PHASE RESPONSE

(Karapetov G.A. Belousov A.V. Frolov A.S. )

Seismic vibrators are one of the most popular type of land seimic sources so its quality control is very important nowadays. One of the parameters is the vibrator start delay time. Current paper describes a method of calculation of this parameter, determines the effect of noise and phase distortions on the accuracy of calculations and gives recommendations for minimizing the error.......

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  • 2020  № 6, pp. 77-81

THE STUDY OF CULTURAL LAYER OF CENTRAL SETTLEMENT OF ARCHAEOLOGICAL COMPLEX GNEZDOVO. THE FIRST RESULTS OF GEOPHYSICS AND ARCHAEOLOGICAL EXCAVATIONS

(Bobachev A.A. Belousov A.V. Novikov V.V. Kainov S.Yu. Sergeev K.P. Gorin A.D. Turenina A.V. )

This work shows us preliminary results of studies cultural layer of the early Middle Ages's of the settlement In second half X - early XI centuries and destroyed barrows of the second half of IXth - mid 10th century on the territory of the Gnezdovsky archaeological comlplex exploration geophysics methods (2D and 3D electrotomography, magnetic survey) with the help of subsequent verification during archaeological excavations. It is shown that an effective way of working with a damaged cultural layer and objects of different times is a combination of two methods: electrotomography and magnetic survey.......

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  • 2020  № 6, pp. 82-88

THE ANALYSIS OF HEAD WAVES SECONDARY FIELD IN CROSSHOLE SEISMIC METHOD

(Tarantin M.V. Sanfirov I.A. Chugaev A.V. Tomilov K.Yu. )

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.......

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  • 2020  № 5, pp. 4-12
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