The relevance of the study lies in identifying typical stages of oil field development and determining the beginning of the late-stage period based on the actual values of annual and accumulated oil production and water cut of well products. The purpose of the research was to identify the main features of the late stage of development and to develop technical and economic directions and measures to stabilise and increase oil and gas production. The paper analysed the possibilities of increasing domestic oil production in Ukraine by using the resource potential of fields whose reserves are classified as hard-to-recover. The authors formulated the criteria by which individual deposits and fields contain hard-to-recover reserves and determined the structure of such reserves, taking into account the elements of residual oil saturation of the pore space. The peculiarities of late-stage field development in terms of the dynamics of changes in development indicators were determined. The geological, industrial, economic, social and environmental problems accompanying the development of fields at a late stage were considered. Using the example of the development of the oil industry in Ukraine, the article analysed typical stages of field development and oil and gas production. The structure of oil reserves classified into active reserves, which are extracted mainly through natural reservoir energy, and hard-to-recover reserves, which require the use of targeted artificial stimulation of the reservoir system using various targeted methods and technologies, was presented. A procedure for determining the beginning of the late stage of field development based on the curves of actual accumulated oil production and water cut of well products was proposed and demonstrated using real actual data. The location of the residual hard-to-recover reserves in the oil-saturated pore space was identified. Based on the available average statistical information, the defining features of the late stage of development were comprehensively disclosed, which are grouped into geological, technological, organisational, economic, financial, social and environmental. The main areas of activity of research and development and oil and gas companies to address the problem of stabilising and increasing oil production at the late stages of field development were identified
Received 06.08.2024
Revised 01.11.2024
Accepted 29.11.2024
[1] Boyko, V.S. (2012). Design of oil field development. Ivano-Frankivsk: Ivano-Frankivsk National Technical University of Oil and Gas.
[2] Boyko, V.S., Kondrat, R.M., & Yaremiichuk, R.S. (Eds.). (1996). Handbook of oil and gas industry. Lviv: Ivano-Frankivsk National Technical University of Oil and Gas.
[3] Cuper, I.M., & Uhrynovskyi, A.V. (2018). Physics of oil and gas reservoirs. Ivano-Frankivsk: Ivano-Frankivsk National Technical University of Oil and Gas.
[4] Dandekar, A.Y. (2013). Petroleum reservoir rock and fluid properties. Boca Raton: CRC Press. doi: 10.1201/b15255.
[5] Fedorishyn, V.O. (2005). Low-porosity gas reservoir rocks of industrial significance. Kyiv: UkrDGRI.
[6] Gryshanenko, V.P., Zarubin, Yu.O., & Doroshenko, V.M. (2015). Scientific and technological support for the improvement of oil and gas field development systems. Ivano-Frankivsk: State Enterprise “Naftogaz Research and Development Institute”.
[7] Hubbert, K. (1956). Nuclear energy and the fossil fuels. Drilling and Production Practice, 95, 1-57.
[8] Isaev, A.A., Takhautdinov, R.S., Yunusov, I.M., Novikov, M.G., & Malykhin, V.I. (2022). Enhanced oil recovery techniques to develop mature oilfields. In SPE annual Caspian technical conference (article number SPE-212140-MS). Nur-Sultan: SPE. doi: 10.2118/212140-MS.
[9] Ivanchenko, I.M. (2011). Oil production reserves through low-flow wells in the western region of Ukraine. Scientific Bulletin of Ivano-Frankivsk National Technical University of Oil and Gas, 4(30), 51-54.
[10] Ivaniuta, M. (Ed.). (1998). Atlas of oil and gas fields of Ukraine. Lviv: Ukrainian Oil and Gas Academy.
[11] Ivanyshyn, V.S. (2003). Oil and gas industrial geology. Lviv: Ivano-Frankivsk National Technical University of Oil and Gas.
[12] Kachmar, Y.D., Svitlytskyi, V.M., Syniuk, B.B., & Yaremiichuk, R.S. (2004). Intensification of hydrocarbon inflow into the well. Lviv: Tsentr Yevropy.
[13] Lukin, O.Y. (2008). Hydrocarbon potential of Ukraine’s subsoil and main directions for its development. Bulletin of the National Academy of Sciences of Ukraine, 4, 56-67.
[14] Moiseiev, V. (2023). “Heavy gold”: Why oil production is declining in Ukraine and who might benefit from this business. Retrieved from https://thepage.ua/ua/economy/vidobutok-nafti-v-ukrayini-u-2023-roci.
[15] Oil and Gas Institute. (2004). Oil and gas of Prykarpattia. Kyiv: Naukova Dumka.
[16] Petrenko, I.M., Kovalenko, O.V., & Tytarenko, R.S. (2021). The impact of polymer flooding on oil recovery efficiency in mature fields of Western Ukraine. Ivano-Frankivsk: Ivano-Frankivsk National Technical University of Oil and Gas.
[17] State Committee of the Oil, Gas, and Oil Refining Industry of Ukraine. (1997). Oil and gas of Ukraine. Kyiv: Naukova Dumka.
[18] Tahir, M.U., Zhou, H., Memon, B.S., Liu, W.D., Memon, A., Khan, D., & Bakhsh, A. (2023). Comparative studies of enhancing oil recovery optimization for optimum oil field development. Modeling Earth Systems and Environment, 9, 1477-1503. doi: 10.1007/s40808-022-01501-8.
[19] Van Golf-Racht, T.D. (1982). Fundamentals of fractured reservoir engineering. Amsterdam: Elsevier Science.
[20] Vytvytskyi, Ya. (2008). Economic assessment of mining capital of oil and gas companies. Scientific Bulletin of Ivano-Frankivsk National Technical University of Oil and Gas, 1(17), 128-133.
[21] Vytvytskyi, Ya.S., & Pilka, M.S. (2016). Analysis of resource potential and economic challenges of oil production in Ukraine from hydrocarbon fields with hard-to-recover reserves. Scientific Bulletin of Ivano-Frankivsk National Technical University of Oil and Gas (Series: Economics and Management in the Oil and Gas Industry), 1(13), 30-35.
[22] Yeher, D.O., Doroshenko, V.M., & Zarubin, Yu.O. (2005). Economic preconditions and regulatory support for the development of depleted oil and gas fields. Oil and Gas Industry, 5, 11-15.
[23] Yurkiv, M.I. (2008). Physicochemical fundamentals of oil recovery. Lviv: M.I. Ivanyshyn.