Release:
2023. Vol. 9. № 4 (36)About the authors:
Ruslan Z. Akchurin, Senior Lecturer, Department of Geophysics, Ufa University of Science and Technology, Ufa, Russia ac4urin.ruslan@yandex.ruAbstract:
Pumping water into productive formations is one of the most common methods of oil field development. The effectiveness of reservoir flooding technology largely depends on the compliance of the design and actual volumes of water injection. Due to the violation of the tightness of the cement ring, fluid flows occur in the column space, which cause non-project withdrawal of the injected liquid into non-perforated layers. Identification and prompt elimination of backwater flows during injection of liquid into injection wells is one of the important tasks of efficient and environmentally friendly development of oil fields. The paper considers the use of induction heating of the casing string to determine the bottom-up backflow when pumping liquid into the well. The research is based on numerical modeling in the Ansys Fluent engineering package. Scenarios of absence and presence of overflow during injection of liquid into the well are simulated. It is shown that in a well without overflow, the temperature field disturbance propagates from the heated section of the column mainly radially into cement and rocks, in a well with overflow, the thermal disturbance from the heating section also propagates vertically in the direction of the overflow, and at a distance of up to 1 m above the heating section, temperature disturbances in the column body and the column space reach 2…3 K. It was found that the signs of overflow are also a decrease in the degree of heating of the casing string and an increased dynamics of cooling of the column over time compared with the absence of the column movement of the liquid. The results obtained serve as a theoretical justification for the fundamental informativeness of the active thermometry method in the diagnosis of backwater flows in injection wells.Keywords:
References:
Akchurin, R. Z., Davletshin, F. F., Islamov, D. F., Valiullin, R. A., & Sharafutdinov, R. F. (2023a). Temperature field in a well with casing induction heating: Considering the natural convection influence. Thermophysics and Aeromechanics, 30(3), 517–529. [In Russian]
Akchurin, R. A., Davletshin, F. F., Ramazanov, A. Sh., & Sharafutdinov, R. F. (2023b). Thermal field in the well during induction heating of the casing under conditions of low flow velocity. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 334(2), 87–98. [In Russian]
Valiullin, R. A., Sharafutdinov, R. F., Sorokan, V. Yu., & Shilov, A. A. (2002a). The use of artificial thermal fields in borehole thermometry. Karotazhnik, (100), 124–137. [In Russian]
Valiullin, R. A., Sharafutdinov, R. F., Ramazanov, A. Sh., Dryagin, V. V., Adiev, Ya. R., & Shilov, A. A. (2002b). Method of active temperature logging of operating wells (versions) (R.F. Patent No. 2194160). Bashkir State University, GeoTEC. [In Russian]
Valiullin, R. A., & Iarullin, R. K. (2014). Peculiarities of geophysical research in running horizontal wells. The Herald of the Academy of Sciences of the Republic of Bashkortostan, 19(1), 21–28. [In Russian]
Valiullin, R. A., Sharafutdinov, R. F., Satretdinov, A. A., Zakirov, M. F., Khabirov, T. R., & Sharipov, A. M. (2015). Ecological questions of control for operation of underground gas storages wells. Izvestia of Samara Scientific Center of the Russian Academy of Sciences, 17(5), 256–262. [In Russian]
Davletshin, F. F., Islamov, D. F., Khabirov, T. R., Gayazov, M. S., & Nizaeva, I. G. (2023a). The study of heat exchange processes during induction heating of the casing string in relation to the determination of behind-the-casing flows. Tyumen State University Herald. Physical and Mathematical Modeling. Oil, Gas, Energy, 9(1), 60–77. https://doi.org/10.21684/2411-7978-2023-9-1-60-77 [In Russian]
Davletshin, F. F., Akchurin, R. Z., Sharafutdinov, R. F., & Islamov, D. F. (2023b). Nonisothermal fluid flow in a well during induction heating of the casing string. Fluid Dynamics, 58(4), 586–597. https://doi.org/10.1134/S0015462823600505
Ipatov, A. I., & Kremenetsky, M. I. (2022). Problems of field development control in the context of the “new economic policy”. Actual Problems of Oil and Gas, (2), 87–99. https://doi.org/10.29222/ipng.2078-5712.2022-37.art6 [In Russian]
Kanafin, I. V., & Kosmilin, D. V. (2017). Thermal field generation in wellbore analogue with local heating. News of the Kabardino-Balkarian Scientific Center of the Russian Academy of Sciences, (2), 44–48. [In Russian]
Kovaleva, L. A., Zinnatullin, R. R., Sultanguzhin, R. F., Sektarov, E. S., & Shashkov, A. V. (2019). Experimental study of the influence of high frequency and microwave electromagnetic fields on oil shales. Bulletin of the Bashkir State University, 24(1), 43–48. [In Russian]
Kosmylin, D. V., Davletshin, F. F., Islamov, D. F., Fedotov, V. Ya., & Gayazov, M. S. (2023). Experimental study of the thermal field in the wellbore during induction. Petroleum Engineering, 21(2), 56–64. [In Russian]
Litvinenko, V. I. (2008). Problems of waterflooding of oil fields of the shelf of the Arctic seas. Journal of Mining Institute, 176, 57–60. [In Russian]
Ramazanov, A. Sh., Davletshin, F. F., Akchurin, R. Z., Sharafutdinov, R. F., & Islamov, D. F.
(2023). Dynamics of temperature in the wellbore at local induction heating in a casing.
Journal of Applied Mechanics and Technical Physics, 64(2), 39–47. https://doi.org/10.15372/
PMTF202215127 [In Russian]
Sukhov, S. A. (2012). Modeling of the two-dimensional Rayleigh–Hadley convection. Bulletin of Higher Education Institutes. North Caucasus Region. Natural Sciences, (3), 32–37. [In Russian]
Sharafutdinov, R. F., Valiullin, R. A., Ramazanov, A. Sh., & Kosmylin, D. V. (2023). Method for determining operating intervals in operating wells (R.F. Patent No. 2795225). Ufa University of Science and Technology. [In Russian]
Abeling, J., Bartels, U., Singh, K., Dutta, Sh., Agrawal, G., & Kumar, A. (2021, November 28–December 1). Well integrity leak diagnostic using fiber-optic distributed temperature sensing and production logging [Conference paper SPE-204557-MS]. SPE Middle East Oil & Gas Show and Conference, event canceled. https://doi.org/10.2118/204557-MS
Sharafutdinov, R., Valiullin, R., Ramazanov, A., Fedotov, V., Sadretdinov, A., & Zakirov, M. (2012, October 16–18). Application of active temperature logging at oilfields of Russia [Conference paper SPE-161982-MS]. SPE Russian Oil and Gas Exploration and Production Technical Conference and Exhibition, Moscow, Russia. https://doi.org/10.2118/
161982-MS
Sharafutdinov, R., Akchurin, R., Davletshin, F., & Ramazanov, A. (2022). Numerical simulation of induction heating of well casing. Aspects in Mining and Mineral Science, 9(3), 1047–1050. https://doi.org/10.31031/AMMS.2022.09.000714
Valiullin, R., Sharafutdinov, R., Ramazanov, A., & Shilov, A. (2012, June 12–14). Enhancement of well productivity using a technique of high-frequency induction treatment [Conference paper SPE-157724-MS]. SPE Heavy Oil Conference, Calgary, Alberta, Canada. https://doi.org/10.2118/157724-MS
