Structural-Facies Typification of Sections of the Bazhenov High-Carbon Formation of the West Siberian Basin

Abstract

The Bazhenov high-carbon formation is a set of marine pelitomorphic deposits enriched in organic matter, which accumulated under conditions of subsidence of the bottom of the sedimentary basin, which was not compensated by sediments. The formation contains hydrocarbons in its entire volume and is a promising source for expanding the hydrocarbon resource base. This article presents a set of the results of core studies and interpretation of well logging and seismic survey data for structural and facies typification of sections of the Bazhenov high-carbon formation throughout the area of its distribution. A multi-faceted approach to studying rocks has made it possible to divide the West Siberian basin into 13 structural-facies zones, each of which has its own structural features of the Bazhenov high-carbon formation section, including the total thickness, the presence of lithological and geophysical members and lithophysical types of rocks in the members, and the total concentration of organic carbon. In the future, this typification of sections will make it possible to simplify the modeling of the properties of Bazhenov high-carbon formation and the prediction of the most prospective areas.