DESCRIPTION OF PETROLEUM PLAYS AND APPRAISAL OF PETROLEUM CONTENT OF THE SYUGDZHER PETROLEUM REGION

A. M. Fomin, S. A. Moiseev, V. A. Topeshko

Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Novosibirsk, Russia

Within the Syugdzher petroleum region, there are the following promising petroleum plays: terrogenous Vendian, carbonaceous Vedian – Lower Cambrian, carbonaceous Lower-Middle Cambrian, and Upper Cambrian – Lower Ordovician. The detailed analysis allowed the authors to appraise the prospects of every play. The most promising is the Botuobinsky horizon in the terrigenous Vendian play. The Talakhsky and Vilyuchansky horizons are characterised by small prospects due to increased thickness gradient, which favoured accumulation of dirty coarse-grained and poorly sorted sandy rocks. The carbonaceous Vendian – Lower Cambrian play is characterised by poor reservoir properties and was appraised at a low rate. The authors have established that the main prospects may be connected to the clinoform complex overlying the source Kuonamskaya Formation in the Middle Cambrian. A breakthrough map of the petroleum prospects of the Syugdzher petroleum region was built with outlining two zones of increased petroleum prospects.

Key words: Lena-Tunguska petroleum province, petroleum content, Vendian, Lower Cambrian.

DOI 10.20403/2078-0575-2017-1-43-53

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