Published March 2021, Pg. 3-10

Section: Geology and geophysics

UOT: 551.14:550.83;551.24:550.83

DOI: 10.37474/0365-8554/2021-3-4-10

Impact of tectonic faults on formation of oil-gas traps in Yevlakh-Aghjabedi oil-gas bearing region

B.S. Aslanov Dr. in Soil Sc. - “Oil-Gas Scientific Research Project” Institute

A.I. Khuduzade PhD in Soil Sc. - “Oil-Gas Scientific Research Project” Institute

R.A. Asgerova - “Oil-Gas Scientific Research Project” Institute

Yu.F. Ismailzade - “Oil-Gas Scientific Research Project” Institute

A.V. Baghirly - “Oil-Gas Scientific Research Project” Institute

Via geological-geophysical surveys carried out on the north-east border of Yevlakh-Aghjabedy downfold in the second half of the last century, the oil-gas bearing content of deeply-immersed Mesozoic horizons of Upper Cretaceous, as well as shallow layers of Paleogene and Miocene has been defined. Oil-gas bearing Productive Series have been discovered within Muradkhanly, Zardab, Shykhbaghy and Jafarli structures, which belong to Zardab-Muradkhanly-Jafarli belt. Oil-gas reservoirs are lithologically associated mainly with fractured superfusive and carbonate rocks of Upper Cretaceous, as well as sedimentary-volcanogenic rocks of Middle Eocene and partially terrigenic collectors of Maikop-Chokrak, which are layer-arch type of trap. Some researchers came to the conclusion that within favorable geological circumstances on the north-east border of the downfold, collectors of Mesozoic sediments may contain industrial oil and gas deposits as well.

To that end, recently the major capacity of exploration drilling and geoexploration was focused within Yevlakh-Aghjabedy downfold, where Mesozoic structures are widespread alongside with Paleogen-Miocene sediments. Deep structural-tectonic framework and oil-gas bearing content both on south-west and north-east slopes of the downfold was specified via the results of conducted works. It was defined that by hydrocarbon saturation, north-west and south-east slopes sharply differ from each other both in the view of structural-tectonic and oil-gas bearing capacity, probably associated with various cycles of folding of Cenozoic and Mesozoic ages.

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