1. JGD
  2. All Volumes and Issues
  3. 1(38)2025
  4. Distribution of formation pressures and collector Properties of mountain rocks at great depths in oil and gas basins of Ukraine

Distribution of formation pressures and collector Properties of mountain rocks at great depths in oil and gas basins of Ukraine

JGD.
2025;
Volume 1(38)2025, Number 1(38)
: 25-36
https://doi.org/10.23939/jgd2025.01.025
Received: December 21, 2024
Authors:
  1. Ihor Shchurov
  2. Volodymyr Khomyn
  3. Ivan Gafych
  4. Lev Monchak
  5. Valerii Omelchenko
  6. Inna Artym
  7. Oleh Ostash
1
LTD "DTEK NAFTOGAZ", Kyiv, Ukraine
2
Ivano-Frankivsk National Technical University of Oil and Gas
3
LTD "DTEK NAFTOGAZ", Kyiv, Ukraine
4
Ivano-Frankivsk National Technical University of Oil and Gas
5
Ivano-Frankivsk National Technical University of Oil and Gas
6
Ivano-Frankivsk National Technical University of Oil and Gas
7
Ivano-Frankivsk National Technical University of Oil and Gas

The study of geodynamic processes, the distribution of reservoir pressures and the properties of deep rocks in Ukraine's oil and gas basins, is crucial for enhancing geological exploration, predicting hydrocarbon accumulation, and assessing production methods. This is an important and timely issue in the field today. Analysis of geological and geophysical studies, deep drilling, laboratory studies of core and sludge, as well as experiments to examine the physical properties of reservoir rocks, form the optimal approach to address this issue. The research compared results in different regions of Ukraine, particularly the Dnipro-Donetsk Depression and the Precarpathian Foredeep. The main prospects for discovering oil and gas deposits at great depths in Ukraine are associated with the Precarpathian Foredeep and the Dnipro-Donetsk Depression. The prospects for oil and gas resources in deep-seated horizons are closely linked to studying the region's geodynamic features, rock reservoir properties, and the distribution of reservoir pressures and temperatures within sedimentary basins. Many works, ranging from articles and dissertations to comprehensive monographs, have been devoted to the problem of the distribution of reservoir pressures and temperatures, as well as the reservoir properties of these rocks. The study found that with depth, the porosity and permeability of rocks gradually decrease. Still, in some horizons, anomalously high values of these characteristics are observed, which opens up new opportunities for the industrial development of deep hydrocarbon deposits. In particular, sandstones with an open porosity of up to 5.58% were discovered at a record depth of over 6.5 km for the Dnipro-Donets Depression, indicating the possibility of effective reservoirs even at such significant depths. It was determined that at depths of up to 10-12 km under anomalously high reservoir pressures, the reservoir properties of rocks are preserved, which is critically important for predicting new deposits. It was confirmed that a sharp increase in reservoir pressure is observed in closed deposits, which gradually reach geostatic values, creating favorable conditions for forming oil and gas clusters. These studies also demonstrate the influence of secondary changes in rocks on their filtration and capacity properties and substantiate the role of thermobaric factors in forming anomalous reservoir pressures. Based on the results obtained, models and formulas were proposed to calculate the depths of preservation of reservoir rocks in various geological conditions. This significantly expands the idea of the prospects of deep-seated horizons for hydrocarbon production. The following can be highlighted as a scientific novelty. For the first time, the study conducted a detailed analysis of the relationship between reservoir pressure, geostatic conditions, and secondary changes in reservoir rocks at great depths; formulas were proposed for estimating reservoir rocks' maximum depths of existence. The study's results help predict hydrocarbon accumulations and choose optimal extraction methods at great depths, increasing the efficiency of geological exploration and reducing risks in exploiting oil and gas deposits.

core studies
porosity and permeability
reservoir rocks
deep-seated horizons
hydrocarbon deposits
oil and gas fields
thermobaric conditions
Dnipro-Donetsk Depression
Precarpathian foredeep
  1. Anikiev, K. A. (1971). Forecast of ultrahigh reservoir pressures and improvement of deep drilling for oil and gas. Leningrad: Nedra. (in Russian).
  2. Bonter, Daniel A. & Trice, Robert. (2019). An integrated approach for fractured basement characterization: The Lancaster field, a case study in the UK. Petroleum Geoscience, 25, 4, 400-414. https://doi.org/10.1144/petgeo2018-152.
  3. Chebanenko, I. I., Orlov, O. O., Zhuchenko, G. A., Lyakhu, M. V., Kornilov, D. N. & Klochko, V. P. (1986). Quantitative Estimation of Anomalously Low Pressures in Natural Oil and Gas-Bearing Fields. Reports of the Academy of Sciences of the Ukrainian SSR, series B – Geological, chemical and biological sciences, 9, 30-32. ISSN: 0002-3523, IDs: E2850. (in Ukrainian).
  4. Chekalyuk, E. B. (1967). Oil of the Earth's upper mantle. Kyiv: Scientific opinion. (in Russian).
  5. Distryanov, V. M. (1974). Influence of Compaction Pressure on the Structures of the Pore Space of the Sandy Rocks of the Carpathians. Oil and gas geology and geophysics, 6, 33-36. (in Russian).
  6. Dobrynin, V. M. (1968). Changes in the maximum primary porosity of sandstones at great depths. Geology of oil and gas, 9, 44-49. (in Russian).
  7. Dubei, N. (2019). Influence of geological heterogeneity of layers on the work of underground gas storage facilities. Visnyk of Taras Shevchenko National University of Kyiv: Geology, 2(85), 65-71. (in Russian). https://doi.org/10.17721/1728-2713.85.09
  8. Engelhardt, V. (1964). Pore space of sedimentary rocks. Moscow: Nedra. (in Russian).
  9. Fedoryshyn, D. D., Trubenko, O. M., Fedoryshyn, S. D., Mykhailovskyi, I. Z. & Sulyma, O. D. (2024). Increasing hydrocarbon production within the Krukenytsia depression of the Bolshe-Volytska zone of the Fore-Carpathian trough. Mineral Resources of Ukraine, 2, 50-55. (in Ukrainian). https://doi.org/10.31996/mru.2024.2.50-55.
  10. Gabinet, M. P. (1982). Secondary changes and catagenetic zonality of sedimentary rocks of the Ukrainian Carpathians. Kyiv: Naukova Dumka. (in Russian).
  11. Glushko, V. V., Novosyletsky, R. M. & Shpak, P. F. (1977). On the regularities of the formation and allocation of oil and gas fields in the oil and gas regions of Ukraine. Geol. Journal, 37, 4, 3-10. (in Russian).
  12. Glushko, V. V. & Kruglov, S. S. (1977). Justification of oil and gas exploration in the deep horizons of the Ukrainian Carpathians. Kyiv: Naukova Dumka. (in Russian).
  13. Ivanyuta, M. M. et al. (Eds.). (1998). Atlas of Oil and Gas Fields of Ukraine in Six Volumes. Lviv: Center of Europe. (in Ukrainian).
  14. Khomyn, V., Мaniuk, М., Маniuk, О., Popluiko, А. & Khovanets, N. (2019). The influence of sedimentation and post-sedimentation transformations on the reservoir properties of the rocks. Visnyk of Taras Shevchenko National University of Kyiv: Geology, 4(87), 14-19. https://geology.bulletin.knu.ua/article/view/1195, (in Ukrainian). https://doi.org/10.17721/1728-2713.87.02.
  15. Krayushkin, V. A. (1988). To assess the prospects of oil and gas content of sedimentary strata at great depths. Conditions of oil and gas formation at great depths. Moscow: Nauka. (in Russian).
  16. Krézsek, C., Schléder, Z., Olaru-Florea, R., Tamas, A., Oteleanu, A., Stoicescu, A., Ungureanu, C., Dudus, R. & Tari, G. (2023). Structure and petroleum systems of the Eastern Carpathians, Romania. Marine and Petroleum Geology, 151, Article number 106179. https://doi.org/10.1016/j.marpetgeo.2023.106179.
  17. Ladzhevskaya, M. I. (1990). Oil and gas content of deep horizons. Geology of oil and gas, 7, 8-11. (in Russian).
  18. Lazaruk, Ya. (2023). Regeneration of deposits of hydrocarbon fields of Ukraine. Visnyk of V.N. Karazin Kharkiv National University: Geology. Geography. Ecology, 58, 49-58. (in Ukrainian).  https://doi.org/10.26565/2410-7360-2023-58-04.
  19. Lebedev, B. A. (1992). Geochemistry of epigenetic processes. Moscow: Nedra. (in Russian).
  20. Mayevsky, B. Y., Benko, V. M., Lagutin, A. A. & Khomyn, V. R. (2013). Features of the geological structure and prospects of oil and gas content of deep-seated horizons of the Dnipro-Donets depression. Ivano-Frankivsk: IFNTUOG. (in Ukrainian).
  21. Mayevsky, B. Y., Anikeev, S. G., Monchak, L. S., Stepaniuk, V. P., Khomyn, V. R., Kurovets, S. S. … Maniuk, M. I. (2012). Recent studies of the geological structure and prospects of oil and gas potential of the deep horizons of the Ukrainian Carpathians. Ivano-Frankivsk: IFNTUOG. (in Ukrainian).
  22. Monchak, L. S. & Omelchenko, V. G. (2015). Fundamentals of oil and gas geology. Ivano-Frankivsk. (in Ukrainian).
  23. Nakajigo, Joan, Johansen, Tor Arne, Kiberu, John Mary, Jensen, Erling Hugo & Tiberindwa, John Vienne. (2024). Prediction of reservoir properties using inverse rock physics modelling in the Kanywataba Exploration Area, Albertine Graben. Petroleum Geoscience, 30, 129. https://doi.org/10.1144/petgeo2023-031.
  24. Novosiletskyi, R. M. (1969). Reservoir pressures of fluids in the subsoil of Ukraine. Kyiv: Technika. (in Ukrainian).
  25. Orlov, O. O. (1980). Abnormal reservoir pressures in oil and gas bearing regions of Ukraine. Lviv: Publishing House of Lviv University. (in Russian).
  26. Pluzhnikova, V. L. & Tarakanova, E. S. (1988). Oil and gas formation and forecast of the phase state of hydrocarbons at great depths according to mineral-thermobaric and geochemical studies. Conditions of oil and gas formation at great depths. Moscow: Nauka. (in Russian).
  27. Pymonenko, L. I., Skopychenko, I. M. & Vergelska, V. V. (2020). Geodynamics of the formation of the Donetsk Basin. Tectonics and Stratigraphy, 47, 30-42. (in Ukrainian).  https://doi.org/10.30836/igs.0375-7773.2020.216109.
  28. Sakhibgareev, R. S. (1989). Secondary changes in reservoirs in the process of formation and destruction of oil deposits. Leningrad: Nedra. (in Russian).
  29. Sheremeta, P. M., Nazarevych, A. V., Nazarevych, L. Ye. (2023). Earth crust of eastern segment of Ukrainian Carpathians according to data on the regional profile RP-5: structure, geodynamics, oil and gas bearing. Geodynamics, 2(35), 106-128. https://doi.org/10.23939/jgd2023.02.106.
  30. Stetyukha, E. I. (1964). Equations of correlation relations between the physical properties of rocks and the depth of their occurrence. Moscow: Nedra. (in Russian).
  31. Tkhostov, B. A. (1966). Initial reservoir pressures and hydrodynamic systems. Moscow: Nedra. (in Russian).
  32. Tretyak, K. R., Maksymchuk, V. Yu., & Kutas. R. I. (Eds.). (2015). Modern geodynamics and geophysical fields of the Carpathians and adjacent territories. Lviv: Publishing house of the National University “Lviv Polytechnic”. (in Ukrainian).
  33. Trushkevych, R. T. & Shvay, L. P. (1998). Formation of oil and gas deposits in the Western Region of Ukraine. Oil and Gas Industry, 4, 7-9. (in Ukrainian).
  34. Vasylechko, V. P., Padva, G. A., Monchak, L. S. & Lazareva, N. S. (1998). Preconditions for the existence of reservoirs at great depths in the conditions of the Boryslav-Pokutsk zone of the Precarpathian Foredeep. Exploration and development of oil and gas fields, 25, 7-10. (in Russian).
  35. WANG, Zecheng, JIANG, Qingchun, WANG, Jufeng, LONG, Guohui, CHENG, Honggang, SHI, Yizuo, SUN, Qisen, JIANG, Hua, ABULIMITI, Yiming, CAO, Zhenglin, XU, Yang & LU, Jiamin. (2024). Hydrocarbon accumulation characteristics in basement reservoirs and exploration targets of deep basement reservoirs in onshore China. Petroleum Exploration and Development, 51, 1, 31-43. https://doi.org/10.1016/S1876-3804(24)60003-0.
  36. WU, Xi, SHI, Yuanpeng, CHEN, Shuguang, WU, Han, CAI, Jun, DAN, Weining, LIU, Xiheng, WANG, Xiaokun, ZHANG, Ximeng & ZHANG, Jianli. (2024). Exploration breakthrough and factors for enrichment and high-yield of hydrocarbons in ultra-deep clastic rocks in Linhe Depression, Hetao Basin, NW China. Petroleum Exploration and Development, 51, 5, 1109-1121. https://doi.org/10.1016/S1876-3804(25)60529-5.
  37. Yemets, V. Y. & Bezrodna, I. M. (2023). Evaluation of the void space structure and reservoir properties of rocks in the visevian and turnaisian formations of the Berezivske field of the Dnipro-Donetsk depression, 17th International Conference Monitoring of Geological Processes and Ecological Condition of the Environment, Monitoring 2023. Kyiv, Ukraine. https://doi.org/10.3997/2214-4609.2023520034.
  38. Zolotov, A. N., Lodzhevskaya, M. I., Simakov, S. M. & Rogozina, E. A. (1984). Prospects for the oil and gas content of deep horizons according to the data of ultra-deep drilling of recent years. XXVII IGC. Oil and gas fields. Section P.13. Reports, 1, 36-43. (in Russian).