Home – Home – Jornals – Russian Geology and Geophysics 2001 number 3

The geologic structure and petroleum potential of the Bajocian-Bathonian deposits in southeastern West Siberia are considered. Investigation of the geochemistry of biomarker hydrocarbons performed at the Institute of Oil and Gas Geology, Novosibirsk, and the distribution of petroleum fields in the Middle Jurassic deposits suggest that the areas bearing prerequisites for hydrocarbon migration from petroleum-generating rocks of the Bazhenov and Togur Formations into Bajocian-Bathonian traps are most favorable for petroleum deposition. Such are the areas where the marine sediments of the Vasyugan Formation are replaced by the Naunak Formation, deposited under continental conditions, and the Paleozoic-Mesozoic boundary zone is made up of permeable rocks.