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APPLICATION OF THE TECHNOLOGY OF PASSIVE–ACTIVE CDP SURVEY (CDP PAS) FOR REGIONAL EVALUATION OF PETROLEUM POTENTIAL OF THE SEPANOVSKOYE DOME-SHAPED UPLIFT OF THE EAST PAIDUGINA DEPRESSION

L. A. Maksimov, G. V. Vedernikov

NMT-Seis, Novosibirsk, Russia

The results of application of the innovative CDP PAS technology on the materials of seismic operations along regional CDP profiles with a total length of 2171 linear km clarifying the southeastern part of the Tomsk region are given. This technology is based on the analysis of spatial-temporal intervals of CDP seismograms up to the first arrivals of induced waves, which provides additional characteristics of emission waves. The working results are presented by spectra and graphs of activity of geodynamic noises in comparison with time sections and the scheme of the spatial position of these data. Areas of anomalous noise values that allow researchers to predict the presence of hydrocarbon accumulations within their boundaries have been identified for all profiles. The results obtained make it possible to assess the oil bearing capacity of this territory rather highly. In Tomsk region, these prospects should be associated mainly with specific non-anti cline traps located near suture zones- long-lived tectonic faults that are possible channels for the migration of deep hydrocarbons. The data obtained indicate an increase in petroleum potential in the southern direction, that is important for the development strategy of this district. The territory of the Stepanovskoye dome mesoelevation appears to be the primary target for the buildup of prospecting and exploration here.

Keywords: geodynamic noises, passive-active seismic CDP survey, HC traps, migration channels, technologies of direct forecasting of HC accumulations, microseisms.

DOI 10.20403/2078-0575-2021-2-46-55

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