Geology, geography and global energy

Scientific and Technical Journal

COMPLEXATION OF RESULTS OF LITHOLOGO-FACIAL AND SEISMO-FACIAL RESEARCHES OF THE IN-SALT SERIES OF PRIPYAT TROUGH

2019. №4, pp. 18-27

Perevolockaya Yanina A. - Geophysicist of the 2nd category of the Department of Dynamic Interpretation Sector of the Seismic Interpretation, RUE Belorusneft Production Association, Belarusian Oil Research and Design Institute, 15a Knizhnaya St., Gomel, 246003, Belarus, Ya.Perevolockaya@beloil.by

Zajceva Olga I. - geophysicist of the 1st category of the Department of Dynamic Interpretation Sector of the Seismic Interpretation, RUE Belorusneft Production Association, Belarusian Oil Research and Design Institute, 15a Knizhnaya St., Gomel, 246003, Belarus, O.Zaitseva@beloil.by

Glavackij Aleksandr A. - Geophysicist of the 2nd category of the Department of Dynamic Interpretation Sector of the Seismic Interpretation, RUE Belorusneft Production Association, Belarusian Oil Research and Design Institute, 15a Knizhnaya St., Gomel, 246003, Belarus, a.glavatsky@beloil.by

Kalejchik Evgenij A. - geologist of the 1st category of the Department of Lithology and Stratigraphy, RUE Belorusneft Production Association, Belarusian Oil Research and Design Institute, 15a Knizhnaya St., Gomel, 246003, Belarus, E.Kaleichik@beloil.by

At the moment, there are a large number of methodological approaches to the study of seismic wave patterns. One of leading methods of the dynamic analysis of the seismic data, allowing to study the situation of sedimentations, is seismic facies analysis. Modern methods of a seismic facies analysis are used for learning of dynamic arguments (frequencies, amplitudes, phases). The results of the analysis of the changing characteristics of reflections in combination with the data of geophysical surveys in wells and core allow us to make assumptions about the nature of the distribution of facies within the study area [1]. Conducting of seismoacoustic modelling allows to testing hypotheses formed during a complex of seismofacies and lithologic-and-facies studies, supplementing the idea of the facies environment with information about changes in petrophysical characteristics. The comprehensive approach to the analysis of the results of lithologo-facial and seismo-facies studies allows to generate submission about the features of the identification of a number of certain sedimentation conditions (facies) within the study area, and the additional application of seismoacoustic modelling in turn to learn the object that is anomalous in a wave seismic field by an increase in thickness in the interval of the zalessky layers of the lebedyansky horizon of the in-salt series. The application of a number of methods in the study of complex deposits of the Pripyat Trough allows not only to identify abnormal and possibly promising objects, but also to determine their geological nature and give a more detailed idea of the structure of the territory.

Key words: литолого-фациальные исследования, сейсмофациальный анализ, сейсмоакустическое моделирование, внутрисолевая толща, lithologo-facial studies, seismo-facies analysis, seismoacoustic modelling, in-salt series

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