Науковий вісник НГУ

Reducing the formation of asphaltene deposits and increasing the flow rates of oil wells

• 
• 

User Rating:  / 0

PoorBest 

Details

Category: Content №5 2023

Last Updated on 27 October 2023

Published on 30 November -0001

Hits: 2309

Authors:

D.Zh.Abdeli¹, orcid.org/0000-0002-1753-4952, Satbayev University, Almaty, the Republic of Kazakhstan

Wisup Bae², orcid.org/0000-0002-2908-2914, Sejong University, Seoul, the Republic of Korea

B.R.Taubayev¹, orcid.org/0000-0003-0019-4397, Satbayev University, Almaty, the Republic of Kazakhstan

A.S.Yskak*¹, orcid.org/0000-0002-2532-2642, Satbayev University, Almaty, the Republic of Kazakhstan, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

A.K.Yesimkhanova¹, orcid.org/0000-0003-2355-7795, Satbayev University, Almaty, the Republic of Kazakhstan

* Corresponding author e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

повний текст / full article

Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2023, (5): 041 - 047

https://doi.org/10.33271/nvngu/2023-5/041

Abstract:

Purpose. Reducing the formation of asphaltene deposits in the bottom-hole zone of wells and increasing their flow rate.

Methodology. The purpose of the work is achieved by conducting theoretical and experimental studies on the formation of asphaltene and paraffin deposits in the bottom-hole zone of the oil reservoir and identifying patterns of their dissolution by pumping heated low-boiling oil components containing carbon atoms C₆–C₉ in molecules into the well.

Findings. The experimental studies conducted under laboratory conditions showed high solubility of asphalt-resin and paraffin compounds in low-boiling oil components. To prevent the deposition of asphaltene deposits in the bottom-hole zone of wells, the turbulent nature of oil movement is necessary, which is achieved by increasing reservoir pressure when water or gas is injected into the oil reservoir. It is also necessary to have a reservoir pressure above the saturation pressure of oil with gas. Effective methods are recommended to reduce the formation of asphaltene deposits in the oil reservoir in the bottom-hole zone and to restore the production rates of producing wells by pumping heated low-boiling oil components containing carbon atoms C₆–C₉ in molecules into the well. It has been experimentally established that when the temperature of the specified solvent changes from 20 to 800 °C, the time of complete dissolution of the asphalt-resin compound (bitumen) in the form of balls with a diameter of 5 mm is within 0.20–3.0 hours, and in reservoir conditions with a temperature of 60–80 °C – significantly less for 0.2–0.25 hours. This indicates that before pumping low-boiling oil components containing C₆–C₉ carbon atoms in the molecules, they must be preheated to reservoir temperature. A method is also proposed for treating the bottom-hole zone of an oil reservoir with a complex solution including low-boiling oil components containing carbon atoms C₆–C₉ in molecules, hydrochloric and fluoric acids.

Originality. Effective methods are proposed to reduce the formation of asphaltene and paraffin deposits in the bottom-hole zone of the oil reservoir and to restore the production rates of producing wells by pumping heated low-boiling oil components into the well, as well as a complex solution with the inclusion of acids.

Practical value. A technique has been developed to improve technological processes to reduce the formation of asphalt-resin-paraffin deposits and to establish rational parameters of the installation for producing low-boiling oil components containing carbon atoms C₆–C₉ in industrial conditions. Using the results of research in oil fields allows you to restore the initial permeability and thereby increase the flow rate of oil wells by 20–30 %.

Keywords: oil, reservoir, wells, flow rate, asphaltenes, resins, paraffins, deposits

References.

1. Musin, B. S., & Tleukulova, Zh. K. (2020). Selection of effective solvents for asphaltene-resin-paraffin deposits of the Uzen deposit. Bulletin of the oil and gas industry of Kazakhstan, 4(5), 42-49.

2. Joonaki, E., Hassanpouryouzband, A., Burgass, R., Hase, A., & Tohidi, B. (2020). Effects of Waxes and the Related Chemicals on Asphaltene Aggregation and Deposition Phenomena: Experimental and Modeling Studies. ACS Omega 2020, 5, 7124-7134. https://doi.org/10.1021/acsomega. 9b03460.

3. El-Dalatony, M. M., Jeon, B.-H., Salama, E.-S., Eraky, M., Kim, W. B., Wang, J., & Ahn, T. (2019). Occurrence and Characterization of Paraffin WaxFormed in Developing Wells and Pipelines. Energies, 12, 967. https://doi.org/10.3390/en12060967.

4. Yaseen, S., & Mansoori, G. A. (2018). Asphaltene Aggregation due to Waterflooding (A Molecular Dynamics Study). Journal of Petroleum Science and Engineering, 170, 177-183. https://doi.org/10.1016/j.petrol.2018.06.043.

5. Abdeli, D. Zh., Daigle, H., Yskak, A. S., Dauletov, A. S., & Nurbekova, K. S. (2021). Increasing the efficiency of water shut-off in oil wells using sodium silicate. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, (1). https://doi.org/10.33271/nvngu/2022-1/026.

6. Abdeli, D. Zh., Yskak, A. S., Novriansyah, A., & Taurbekova, A. A. (2018). Computer modeling of water conning and water shut-off technology in the bottom hole of oil well. News of the National academy of sciences of the Republic of Kazakhstan, Series of geology and technical sciences, 5(431), 86-94. https://doi.org/10.32014/2018.2518-170X.12.

7. Masoudi, M., Miri, R., Hellevang, H., & Kord, S. (2020). Modified PC-SAFT characterization technique for modeling asphaltenic crude oil phase behavior. Fluid Phase Equilibria, 0378-3812. https://doi.org/10.1016/j.fluid.2020.112545.

8. Kharchenko, M., Manhura, A., Manhura, S., & Lartseva, I. (2017). Аnalysis of magnetic treatment of production fluid with high content of asphalt-resin-paraffin deposits. Mining of Mineral Deposits, 11(2), 28-33. https://doi.org/10.15407/mining11.02.028.

9. Zoveidavianpoor, M., Samsuri, A., & Shadizadeh, S. R. (2013). The Clean Up of Asphaltene Deposits in Oil Wells. Energy Sources, Part A, 35, 22-31. https://doi.org/10.1080/15567036.2011.619630.

10. Lordeiro, F. B., Altoé, R., Hartmann, D., Filipe, E. J. M., González, G., & Lucas, E. F. (2021). The Stabilization of Asphaltenes in Different Crude Fractions: A Molecular Approach. Journal of the Brazilian Chemical Society, 32(4). https://doi.org/10.21577/0103-5053.20200226.

11. Iskaziyev, K. O., Karabalin, U. S., Ermekov, M. M., Abdeli, A. D., Abdeli, D. Zh., & Beisembetov, I. K. (2018). A method for treating industrial waste, field and formation waters with suspended solids, microorganisms and bacteria. (Patent No. 32696 of the Republic of Kazakhstan). Republic of Kazakhstan. Retrieved from https://gosreestr.kazpatent.kz/Invention/DownLoadFilePdf?patentId=269526&lang=ru.

12. Abdeli, D. Zh., Bae, W., Seiden, A. B., & Novriansyah, A. (2022). Treatment of formation water at oil fields using granular filters with varying particle sizes. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, (2). https://doi.org/10.33271/nvngu/2022-2/023.

13. Abdeli, D. Zh., Iskaziyev, K. O., Abdeli, A. D., Kuranbayev, M. I., & Karabalin, U. S. (2016). A method for preventing the loss of heavy, asphalt-resinous and paraffin deposits in the bottomhole formation zone and well. (Patent No. 31439 of the Republic of Kazakhstan). Republic of Kazakhstan. Retrieved from https://kzpatents.com/patents/abdeli-dajjrabajj-zhumadiluly.

• < Prev
• Next >