V. A. KOSMYNIN, D. A. KUZMIN

SEDIMENTARY RESEARCH AND OIL-AND-GAS CONTENT ASSESSMENT OF KOLGAN FORMATION WITHIN THE SOUTHERN PART OF THE ORENBURG REGION

The results of Kоlgan Formation sedimentary researches within the southern part of the Orenburg Region are represented. Stratigraphic range of the studied deposits covers the Upper Devonian. The depositional environment of northwestern zone of Kоlgan Formation clastics development are defined. Perspective sandy bodies are indentified. The main directions for exploration are formulated.

Keywords: siltstone, mudstone, sandstone, bar, Kolgan Formation, fan, facies modelling, facies, sequence.