MATURITY OF ORGANIC MATTER AND PETROLEUM POTENTIAL OF PALEOZOIC DEPOSITS IN THE WEST SIBERIAN BASIN
A.N. Fomin
Institute of Petroleum Geology, Siberian Branch of the
Keywords: Paleozoic deposits, maturity (catagenic grade) of organic matter, petroleum potential, West Siberia
Pages: 786-793
Abstract
The paper reports a synthesis of organic petrographic data on the maturity of organic matter (OM) in Paleozoic sediments from 318 prospects in the West Siberian petroleum province. The maturity of organic matter in the top of the Paleozoic section varies in the range of MC2 - AC3 catagenic grades. Organic matter on the greatest part of the territory is altered to the AC grade. Petroleum potential is associated mostly with terrigenous-carbonate deposits in the Nyurol'ka basin in which organic matter reaches the MC2 grade. Deposits with MC31 -AC1 organic matter may contain gas pools. The theoretical results have been tested against field exploration data.
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