INCREASING RELIABILITY OF THE QUANTITATIVE INTERPRETATION OF SEISMIC DATA IN THE SECTION OF EASTERN SIBERIA USING ZONING METHOD

(Karamysheva O.I. Nikulina M.Yu. )

On the example of one of the fields in Eastern Siberia, we shown the efficiency of the methodology for detailed quantitative interpretation of seismic data based on zoning of the study area in view of the individual seismogeological features of each zone. The work area we divided into separate zones according to the developed criteria. This made it possible to obtain regression dependences with high correlation coefficients for each separate zone and to calculate maps of predicted net thickness and porosity of the yarakta horizon. Then these maps we combined for the entire work area. Based on the results of quantitative interpretation of seismic data in combination with well logging, core samples, lithological analysis we have performed geological modeling.......

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  • 2020  № 6, pp. 42-48

CONSTRUCTION OF PREDICTIVE MAPS OF EFFECTIVE GAS-SATURATED THICKNESSES USING SEISMIC WAVEFORM BASED ON KOHONEN NEURAL NETWORKS

(Priezzhev I.I. Vasilev M.A. Petrenko E.N. )

The article describes the methodology and an example of using Kohonen neural networks to build predictive maps of gas saturation based on the joint use of seismic survey data and measurements in wells. The forecast maps were built on the basis of a neural network technique for predicting the values of effective gas-saturated thicknesses averaged at the points of the formation intersection of the studied reservoir according to the shape of the seismic signal in the target interval using several angular sums of seismic cubes.......

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  • 2020  № 6, pp. 49-53

COMPENSATION METHOD OF UPPER-LAYER ANOMALIES. PART 1: INFLUENCE ON THE RESULT OF SEISMIC DATA PROCESSING

(Danko D.A. Litavrin I.V. Svetlichniy A.L. Iskaziev K.O. )

In the article the compensation method of upper-layer anomalies on the stage of seismic data processing is described and tested. The compensation consists of removing the low-frequency dependence of AVO attributes and domain frequency on the surface relief. The application of the proposed method has significantly improved the seismic data quality and prepared the processing result for dynamic interpretation.......

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  • 2020  № 6, pp. 54-59

COMPENSATION METHOD OF UPPER-LAYER ANOMALIES. PART 2: INFLUENCE ON THE RESULT OF SEISMIC DATA INTERPRETATION

(Danko D.A. Osintseva N.A. Litavrin I.V. Iskaziev K.O. Jangirov A.N. Shestakov A.G. )

The article shows the influence of the proposed compensation method of upper-layer anomalies on the result of seismic data interpretation. The effectiveness of the method was evaluated by comparing the seismic data results obtained before and after compensation. For the comparison, the seismic interpretation tools such as seismic facies analysis, spectral decomposition and pre-stack seismic inversion were used. The comparison showed that using of the proposed method allowed to significantly improve the quality of seismic data, increase the forecast reliability and search for missed perspective objects.......

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  • 2020  № 6, pp. 60-64

ABOUT SOME OPPORTUNITIES IN ADAPTIVE VIBRATION SEISMIC

(Karapetov G.A. )

Seismic vibration signals are analyzed from the point of their temporal and spectral characteristics. The methods of adapting their characteristics in the case of using a linear frequency change are touched upon, used. A practical example shows the possibility of their post-correlation processing, which does not consider their phase spectrum.......

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  • 2020  № 6, pp. 65-68
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