Core and Log Data Integration for Unconventional Rocks Pore Space Description

The Bazhenov suite is widespread throughout Western Siberia and is the main oil-bearing stratum for oil deposits in the Cretaceous sediments. In recent years, it has attracted interest as an accumulating layer.

With a wide comprehensive study of the rocks of the Bazhenov Formation, characterized by fine structure and complex material composition, discussion is the question of proper terminology of their designation.

Along with the question of the terminologically literate designation of the rocks of the Bazhenov suite, the important task remains to describe the structure of the pore space and to determine the type of reservoir.

In the course of the integrated work on the log data (PNSGL, NML), it was shown that it is possible to assess such geochemical criteria as S1, S2, PI and OSI, which can be easily coupled to the results of pyrolysis of core samples and to identify the main potentially productive intervals of Bazhenov rocks suite. Obviously, in order to further forecast the spread of the allocated potentially productive internals, the sediments have been classified under investigation, and the relationship between the potentially productive intervals and the compound-structural types of rocks has obtained.