Proceedings of the 2023 9th International Conference on Advances in Energy Resources and Environment Engineering (ICAESEE 2023)

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The miscible behaviors and mechanism of crude oil and mixing gas of CO2/N2 (CO2/H2S): a molecular dynamic simulation study

Authors
Haonan Li1, Qingzhong Xue1, *
1State Key Laboratory of Heavy Oil Processing, School of Material Science & Engineering, China University of Petroleum, Qingdao, 266580, Shandong, P. R. China
*Corresponding author. Email: xueqz@upc.edu.cn
Corresponding Author
Qingzhong Xue
Available Online 14 May 2024.
DOI
10.2991/978-94-6463-415-0_7How to use a DOI?
Keywords
Miscibility; Gas mixture; Molecular Dynamics Simulation
Abstract

Considering the low cost and no corrosion of N2 and the inevitability of H2S generation, CO2/N2 or CO2/H2S injection is seen as a promising approach for enhanced oil recovery. The miscible behaviors of gas mixture and crude oil are studied by molecular dynamic simulations. The results indicate that H2S shows better miscibility with C7H16 than CO2 and N2, which is a method for rational utilization of H2S produced in the reservoirs. In addition, there exists an optimal proportion of gas mixture for high miscibility. Specially, the gas mixture consisting of 50% H2S and 50% CO2 has great miscibility with polar crude oil. These findings show that CO2/N2 injection could be applied for the reservoirs with high apolar crude oil while CO2/H2S could be appropriate for the reservoirs with both polar and apolar crude oil. These findings could provide guidance for enhanced oil recovery in the development of deep and ultra-deep reservoirs and gas sequestration.

Copyright
© 2024 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 2023 9th International Conference on Advances in Energy Resources and Environment Engineering (ICAESEE 2023)
Series
Atlantis Highlights in Engineering
Publication Date
14 May 2024
ISBN
978-94-6463-415-0
ISSN
2589-4943
DOI
10.2991/978-94-6463-415-0_7How to use a DOI?
Copyright
© 2024 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Haonan Li
AU  - Qingzhong Xue
PY  - 2024
DA  - 2024/05/14
TI  - The miscible behaviors and mechanism of crude oil and mixing gas of CO₂/N₂ (CO₂/H₂S): a molecular dynamic simulation study
BT  - Proceedings of the 2023 9th International Conference on Advances in Energy Resources and Environment Engineering (ICAESEE 2023)
PB  - Atlantis Press
SP  - 50
EP  - 56
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-415-0_7
DO  - 10.2991/978-94-6463-415-0_7
ID  - Li2024
ER  -