Published November 2017

Lithofacial characteristics and reservoir properties of Eocene sediments in Kura and Gabirry interfluve oil and gas bearing region

G.A. Abbasov

A.M. Salmanov

B.I. Maharramov

In the result of analysis of lithofacial characteristics and reservoir properties of Eocene sediments and Kura and Gabirry interfluve oil-gas bearing region, it has been justified that predominantly volcanic-sedimentary rocks in the direction from south-west to the northeast are replaced with the terrigene-carbonate ones. The thickness of Eocene sediments in mentioned direction dramatically increases. A certain regularity is specified in the change of lithofacial characteristics and thickness of sediments. The thickness increase takes place due to the formation of new terrigene-carbonate layers in the section. In northeast part of Kura and Gabirry interfluve oil-gas bearing region, alongside with increase of thickness of Middle Eocene sediments, their reservoir properties improve as well, and vice-versa, the deterioration of these properties take place in the direction of reduction of formation thickness. So, in the areas, where the thickness of Middle Eocene sediments are less than 50 m, a significant clay alteration of section is observed.