A SYSTEMIC HISTORICAL APPROACH TO THE PREDICTION OF OIL-PROMISING TARGETS IN THE CONJUNCTION ZONE OF THE BAZHENOVSKAYA AND MARYANOVSKAYA FORMATIONS

V. V. Sapyanik, E. A. Predtechenskaya, L. A. Krol, Yu. L. Zaitseva, A. P. Khilko, I. S. Pavlukhin

Siberian Research Institute of Geology, Geophysics and Mineral Resources, Novosibirsk, Russia

The authors have developed an integrated systemic historical approach to the prediction of oil-promising targets within polyfacies deposits of the Bazhenovsky horizon in the central and south-eastern West-Siberian plate. More than 600 well columns were analysed based on core and well logging data, with the assignment of lithogenetic types. Depositional environments were reconstructed. The areas of lithotypes development were outlined in the landscape system of the Volga stage paleobasin. The authors constructed neotectonic maps and divided the territory into regions depending on the prospects of fractured reservoirs development. A set of criteria was established that favour the formation of reservoirs in highly bituminous black shale strata of the outer belt of the West-Siberian petroleum province. The oil-bearing potenti al of the Volgian domanikites in the conjunction zone of the Bazhenovskaya and Maryanovskaya formations was estimated.

Keywords: West Siberia, Upper Jurassic, Bazhenovskaya Formation, core, well logging, lithotypes, paleogeography, oil content, resource appraisal.

DOI 10.20403/2078-0575-2017-3-29-45

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