Article

Oligocene reservoir-rocks within Krosno zone of Folded Carpathians

Oleh Ostash, Valerii Omelchenko, Andrii Loktiev, Tetiana Kalynii
Abstract

Increasing the production of natural hydrocarbons requires an increase in the volume of exploration and exploration for oil and gas, and this requires such work to be carried out in areas that were previously considered unpromising. In addition, it is necessary to pay attention to collectors in carbonate deposits, where fractured zones can be observed, which can be reservoirs of oil and gas. Considering this, the Oligocene carbonate layer of the Krosnen zone of the Folded Carpathians is one of the interesting objects for the search, exploration and devel?pment of hydrocarbon deposits. In order to assess the quality of reservoir rocks, which are composed of fractured limestones, it is necessary to conduct a more detailed study of their filtration and capacity properties. The article presents the results of the study of Oligocene limestones of Lutnyanska square, which is located within the Krosnen zone. A comprehensive approach was used for the study of reservoir rocks composed of fractured limestones, which included lithologic-stratigraphic, petrographic and geochemical analyses, as well as the study of fracturing and structural features of the rocks. The results of the researches indicate a high fracturing and a favorable mineral composition of the limestones, which indicates good filtration-capacity characteristics and confirms their belonging to reservoirs for hydrocarbons of industrial importance. In the results of the study and analysis of the produced grindings from the limestones of the Oligocene deposits, diagenetic changes were found in them, which affect the porosity and permeability, which makes it possible to assess the reliability of the natural reservoir for the accum?lation and preservation of hydrocarbon deposits. The practical value of the obtained results lies in their use for planning and high-quality conducting of exploration and exploration for oil and gas, which can increase the eficiency of the development of oil and gas fields in carbonate deposits

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Received 26.07.2023

Revised 09.11.2023

Accepted 30.12.2023

https://doi.org/10.69628/pdogf/4.2023.68
Retrieved from Vol. 23, No. 4, 2023
Pages 68-78

Suggested citation

Ostash, O., Omelchenko, V., Loktiev, A., & Kalynii, T. (2023). Oligocene reservoir-rocks within Krosno zone of Folded Carpathians. Prospecting and Development of Oil and Gas Fields, 23(4), 68-78. https://doi.org/10.69628/pdogf/4.2023.68

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