Sedimentation preconditions of Kolgan Formation hydrocarbon potential

Authors: E.V. Zagrebelnyi (Gazprom Neft Orenburg, RF, Orenburg), V.A. Kosmynin, D.A. Kuzmin (Gazpromneft NTC LLC, RF, Saint-Petersburg), V.V. Ananiev (Gazprom Neft JSC, RF, Saint-Petersburg)

Key words: Devonian, Kolgan Formation, sandstones, paleogeography, lithology traps.

The significant amount of geological and geophysical data including well logging, core studying, well testing and regional geology structure have been analyzed and systemized. The goal is determination of existent hydrocarbon deposits regularities and estimation of exploration prospects in terrigenous Kolgan Formation. The non-structural traps with cumulative recoverable hydrocarbon resources of more then 35 mln tons are predicting according to the results of work.