Issues of the journals for 2016 y.

TWO COMPUTATIONAL IMPLEMENTATIONS OF VELOCITY FILTERING OF ACOUSTIC WELL LOGGING WAVEFORMS

(Akhmetsafin R.D. Akhmetsafina R.Z. )

Two realizations of direct and inverse Radon transform were considered for solving the problem of velocity filtering of acoustic logging data, represented as arrays in (t - x)-area (time - linear spatial coordinate): 1) through (т - p)-area (travel time - slowness); 2) through (f - p)-area (frequency - slowness). Original MATLAB-functions are outlined, comparison of filtering results for arrays of multielement wave acoustic logging data are adduced.......

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  • 2016  № 3, pp. 78-84

Seismic facies analysis range of possibilities for the study of paleo fluvial systems

(Olneva T.V. Zhukovskaya E.A. )

Creation of library of seismic patterns representing geological processes and phenomena is a challenging and actual task [2-4]. Thanks to recent researches and, in the first place, the interpretation approaches based on seismic stratigraphy and seismic facies analyses we are able to do this. The authors are planning a series of papers devoted to different geological processes and phenomena. The first two articles dealing with underwater landslide phenomena and cones, were published in 2015 the journal «Geophysics» [5, 6]. The theme was of great interest, proved very popular and was picked up by colleagues [7].......

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  • 2016  № 2, pp. 2-9

The study of geological objects achimov formation using a spectral decomposition

(Butorin A.V. )

Modern oil industry is on the way of complication of the geological structure of the deposits. This trend requires specialists use the latest technologies to analyze available geological and geophysical information. In the article describes a new algorithm - continuous wavelet transform in example of synthetic and real data.......

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  • 2016  № 2, pp. 10-18

Microplastic inelasticity during seismic and acoustic wave propagation in rocks

(Mashinskii E.I. )

Manifestations of microplastic inelasticity in rocks initiated by seismic and acoustic waves are detected at the stress-time recording a(t) with microsecond resolution during measurements in shallow boreholes and on the samples. Amplitude-dependent inelastic manifestations have the step form and consist of the stress plateau with short duration inserted into elastic process. New knowledge in the physics of wave propagation can be useful for applications using the effect of the amplitude-dependent wave attenuation.......

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  • 2016  № 2, pp. 19-23

About ultrasonic measurements of the non-consolidated media samples

(Shalaeva N.V. Vladov M.L. Tokarev M.Yu. Struchkov V.A. Chuvilin E.M. )

Ultrasonic measurements of the solid samples or laboratory models are very effective. But the measurements of the nonconsolidated media, such as water-saturated granular sediments, have a lot of difficulties. It is very difficult to investigate the dependence of sediments acoustic properties from many factors in laboratory. At the same time some boundary effects at the non-solid sample surface can be used for frequency band widening without changing sample size. On the other hand, effect parameters can be used as measure of particle connections in media.......

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  • 2016  № 2, pp. 24-31
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