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METHODS OF ISOLATION AND MAPPING OF TRAP BODIES BASEDON SEISMIC SURVEY DATA OF EASTERN SIBERIAWITHIN THE WESTERN SLOPE OF THE BAIKIT ANTECLISE ON THE EXAMPLE OF THE MIDDLE-LOWER USOLYE SECTION INTERVAL

A. S. Yunasheva, E. G. Gromova, L. Yu. Bespechnaya, E. V. Mosyagin

Siberian Research Institute of Geology, Geophysics and Mineral Resources, Novosibirsk, Russia

The paper presents the mapping technique of intrusive bodies from seismic survey data of Eastern Siberia within the western slope of the Baikit anteclise in the absence of information on deep drilling. The technique is based on a comprehensive analysis of seismic and well data from adjacent territories in combination with an amplitude and kinematic analysis. The obtained material made it possible to assess the complexity of the studied area, clarify the structural and tectonic features of the earth model and highlight the boundaries of trap intrusions. Particular attention is given to the distribution of intrusive bodies, their relationship with disjunctive dislocations and their influence on hydrocarbon accumulations.

Keywords: Eastern Siberia, seismic survey, lens trappean bodies, geoacoustic downhole models, seismic facies analysis, pseudovelocity.

DOI 10.20403/2078-0575-2022-12s-47-56

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