Abstract
This article analyzes the effect of pressure (0.1–100 MPa) and temperature (20–250°C) on the properties of technological fluids (HCl, water) and reaction products ( ) during acid treatment of carbonate reservoirs. Studies show that under deep reservoir conditions, gases transition to a supercritical state, salt solubility increases, and acid viscosity decreases significantly. Considering these changes allows for increasing the efficiency of acid stimulation and correctly modeling the development of wormholes.
References
[1] Глущенко В.Н., Силин М.А. Нефтепромысловая химия: в 5-ти т. Т. 4: Кислотная обработка скважин. – М.: Интерконтакт Наука, 2010. – 703 с.
[2] Maxmudov S.I., Samatov Sh.Sh., Jo‘rayeva G.Ch. Quduq atrofi zonasining geologik tuzilishining kislotali ishlov samaradorligiga ta’siri // Ta’lim Innovatsiyasi va Integratsiyasi. – 2025. – T. 54. – № 1. – B. 223–226.
[3] Meyliyev X.B., Samatov Sh.Sh., Boyqobilova M.M. Physicochemical transformation processes in the near-wellbore zone of different reservoir types // Innovatsion texnologiyalar. – 2026. – T. 60. – № 4. – B. 33–41. – DOI: 10.70769/2181-4732.ITJ.2025-4.04.
[4] Daccord G., Lietard O., Lenormand R. Chemical dissolution of a porous medium by a reactive fluid. Part II. Convection vs Reaction, behavior diagram // Chemical Engineering Science. – 1993. – Vol. 48. – № 1. – P. 179-186.
[5] Axatova G.A., Samatov Sh.Sh., Jo‘rayeva G.Ch. Karbonat kollektorlarda kislotali ishlov berish samaradorligini quduq atrofi zonasining geologik tuzilishi bilan uyg‘un modellashtirish // Ta’lim Innovatsiyasi va Integratsiyasi. – 2025. – T. 54. – № 1. – B. 217–222.
[6] Samatov Sh.Sh., Maxmudov S.I. Optimization of acidizing in carbonate reservoirs with explicit account of near-wellbore geological structure and hydrodynamic conditions // Universum: технические науки. – 2025. – № 10 (139). – P. 45–49. – URL: https://7universum.com/ru/tech/archive/item/20968
[7] Никольский Б.П., Григоров О.Н., Позин М.Е. Справочник химика. Т. 1. – М.: Химия, 1966. – 1072 с.
[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] Ermatov N.X., Samatov Sh.Sh., Hayitov L.K. Karbonat kollektorlarida kislotali ishlov berish samaradorligini oshirish // JizPI Xabarnomasi. – 2025. – № 3. – B. 265–272.
[10] Намиот А.Ю. Растворимость газов в воде: справ. пособие. – М.: Недра, 1991. – 167 с.
[11] Span R., Wagner W. A new equation of state for carbon dioxide covering the fluid region from the triple-point temperature to 1100 K at pressures up to 800 MPa // Journal of Physical and Chemical Reference Data. – 1996. – Vol. 25. – № 6. – P. 1509-1596.
[12] Wakeham W.A. The viscosity of carbon dioxide // Journal of Physical and Chemical Reference Data. – 1998. – Vol. 27. – № 1. – P. 31-44.
[13] Ermatov N.X., Samatov Sh.Sh., Hayitov L.K. Karbonat kollektorlarida kislotali ishlov berishni modellashtirish va samaradorligini oshirish yo‘llari // Geologiya fanlari, innovatsion rivojlanish, mutaxassislar tayyorlashning dolzarb muammolari va istiqbollari. Xalqaro anjuman. Toshkent, 7-may 2025. – B. 272–274.
[14] Jacobsen R.T., Stewart R.B., Jahangiri M. Thermodynamic properties of nitrogen from the freezing line to 2000 K at pressures to 1000 MPa // Journal of Physical and Chemical Reference Data. – 1986. – Vol. 15. – № 2. – P. 735-909.
[15] Span R., Lemmon E.W., Jacobsen R.T., Wagner W., Yokozeki A. A reference equation of state for the thermodynamic properties of nitrogen for temperatures from 63.151 to 1000 K and pressures to 2200 MPa // Journal of Physical and Chemical Reference Data. – 2000. – Vol. 29. – № 6. – P. 1361-1433.
[16] Samatov Sh.Sh., Boyqobilova M.M., Jo‘rayeva G.Ch. Kislotali ishlov berish vaqtida hosil bo‘ladigan sho‘r eritmalarning fizik-kimyoviy xossalari va issiqlik-massa almashinuvi: model va tajriba // Yashil iqtisodiyot va raqamlashtirish davrida neft va gaz sanoatini rivojlantirishning zamonaviy tendensiyalari. IV xalqaro anjuman. Toshkent, 30–31 oktabr 2025. – B. 133–134.
[17] Каневская Р.Д., Новиков А.В. Методы моделирования червоточин при соляно-кислотном воздействии на карбонатные пласты // Нефтепромысловое дело. – 2018. – № 3. – С. 19-28.
[18] Перри Д.Г. Справочник инженера-химика. Т. 1. – Л.: Химия, 1969. – 640 с.
[19] Хузин Р.А. Оптимизация повторных кислотных обработок на основе совершенствования подходов к моделированию // PROнефть. – 2020. – № 1. – С. 47-53.

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