Keywords
heavy oil
acid treatment
mathematical modeling
carbonate formations
hydrochloric-acid technologies
gas-condensate reservoirs
near-wellbore zone
filtration properties
physicochemical processes
How to Cite
Abstract
The near-wellbore zone of reservoirs of various types is characterized by complex physical and chemical processes that determine well productivity and the efficiency of stimulation methods. This study examines three independent directions of near-wellbore transformation typical for oil and gas-condensate reservoirs of Uzbekistan. The first direction focuses on the influence of an electrical field on heavy-oil systems, where notable changes in rheological properties, threshold pressure, and filtration behavior are observed. The second direction is based on mathematical modeling of acid treatment in carbonate formations, incorporating dissolution kinetics, channel (wormhole) development dynamics, and the impact of geological heterogeneity on acid distribution. The third direction analyzes hydrochloric-acid technologies applied in low-pressure gas-condensate reservoirs, where mineralogical characteristics and reservoir fluid composition define specific mechanisms of rock–acid interaction.
References
[1] Ahmed T., McKinney P. Advanced reservoir engineering. – Elsevier, 2019. – 732 p.
[2] Al-Harthy S. S., Nasr-El-Din H. A. Acid fracturing in carbonate reservoirs: A review // SPE Journal. – 2018. – Vol. 23, No. 1. – P. 18–37. https://doi.org/10.2118/181723-PA
[3] Bennion D. B., Thomas F. B. Formation damage in heavy oil reservoirs // Journal of Canadian Petroleum Technology. – 2005. – Vol. 44, No. 2. – P. 33–41.
[4] Bryant S., Kitanidis P. Channeling during acid stimulation of carbonates // Chemical Engineering Science. – 1999. – Vol. 54. – P. 3953–3966.
[5] Chang F. F., Fogler H. S. Acid wormholing in carbonates // AIChE Journal. – 1994. – Vol. 40, No. 10. – P. 1892–1901.
[6] Chen Z., Liao X. Salt precipitation mechanisms in gas-condensate reservoirs // Journal of Natural Gas Science and Engineering. – 2017. – Vol. 38. – P. 543–554.
[7] Ding M. et al. Electrical stimulation for heavy oil recovery: Mechanisms and field results // Energy Reports. – 2021. – Vol. 7. – P. 2123–2135.
[8] G‘ayimnazarov I. X. UDC 532.543: 627.157: Calculation of the parameters of the base rows in a non-stationary flow //Innovatsion texnologiyalar. – 2025. – Т. 59. – №. 3. – С. 62-66.
[9] G‘ayimnazarov, I., Eshev, S., Bazarov, O., Latipov, S., Rakhimov, A., & Guliyeva, S. (2025, July). Investigation of the initiation of sediment movement in mixed flows. InAIP Conference Proceedings (Vol. 3256, No. 1, p. 020041). AIP Publishing LLC.
[10] Ding Y., Wen D. Electrorheological behavior in porous media // Journal of Applied Physics. – 2018. – Vol. 124. – 164901.
[11] Economides M., Nolte K. Reservoir stimulation. – Wiley, 2000. – 856 p.
[12] Ermatov N. X., Samatov Sh. Sh., Bekjonov R. S., Bazarov U. S. Current state and objectives of the industry for improving oil field development systems with waterflooding // International Journal of Scientific Trends. – 2025. – Vol. 4, No. 1. – P. 130–138.
[13] Ermatov N. X., Samatov Sh. Sh., Hayitov L. K. Karbonat kollektorlarida kislotali ishlov berishni modellashtirish va samaradorligini oshirish yoʻllari // Proceedings of the International Scientific-Practical Conference. – Tashkent, 2025. – P. 272–274.
[14] Ermatov N. X., Samatov Sh. Sh., Hayitov L. K. Karbonat kollektorlarida kislotali ishlov berish samaradorligini oshirish // JizPI Xabarnomasi. – 2025. – No. 3. – P. 265–272.
[15] Ermatov N. X., Samatov Sh. Sh., Bozorov U. S. Damkyuler soni asosida karbonat kollektorlarning kislotali ishlov jarayonini modellashtirish // IV International Scientific Conference Proceedings. – Tashkent, 2025. – P. 103–104.
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