Structure and Source Potential of the Bazhenov Formation in the Central Part of Western Siberia

Abstract

Five members were identified and traced in the Bazhenov Formation within the Khanty-Mansi Autonomous Region -Yugra. The members have different macroscopic descriptions, geochemical and mineralogical parameters, and extension areas. For statistically unbiased estimate of geochemical and mineralogical parameters of the formation, the authors suggest using parameter maps generated by formal or contents selection of cross-section intervals. Thickness-based weighted average members identified based on geochemical and mineralogical parameters of the deposits were mapped with and without consideration to boundary conditions. The paper discusses the source potential of the Bazhenov Formation, with outlining extension limits of rocks hosting organic matter of different types. The paper provides data on weighted average key pyrolysis parameters, calculations of organic matter transformation, hydrocarbon generation volumes in the Bazhenov rocks, hydrocarbon volumes in place, correction for loss of gaseous hydrocarbons while lifting core, and residual source potential.