The properties of reservoir rocks of fault traps in Yevlakh-Aghjabedi depression

Abstract

The structures formed in Yevlakh-Aghjabedi depression, as well as the changes of lithofacies of reservoir rocks of fault traps have been studied based on the geophysical survey. The distribution and reservoir properties of Cretaceous, Eocene and Miocene sediments, which are essential objects for prospectivity of whole depression, have been researched as well. Alongside existing fields and prospective structures such as Muradkhanly and Zardab, non-anticline traps and the characteristics of their reservoir rocks have been studied in the areas identical for some features. Commercial recovery obtained from the upper eroded parts of cracked-porous reservoirs of volcanic sediments of Upper Cretaceous in Muradkhanly field and formation of the deposits of both carbonated and volcanogenic-sedimentary rocks in Zardab field allows supposing that separate structures formed in the same conditions along the whole studied territory may have high prospectivity. In the areas, where fault traps are associated with Paleogene sediments, which were formed by covering raised residues of the landscape or discordantly embed on the denuded surface of Upper Cretaceous, there are favorable conditions for formation of hydrocarbon deposits in carbonate-cracked or volcanogenic sediments of Cretaceous Age.