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Nanomaterials
Volume 15
Issue 3
10.3390/nano15030235
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Insights into Adsorption Behaviors of Multi-Component Shale Oil in Illite Nanopores Under Different Reservoir Conditions by Molecular Simulation

by
Lingtan Zhang
1,2,
Maojin Tan
1,*,
Xuefeng Liu
2,
Xiaoqing Lu
3,
Qian Wang
4,
Siyu Wang
1,
Min Tian
5 and
Junjie Wang
6
1
School of Geophysics and Information Technology, China University of Geosciences, Beijing 10083, China
2
College of Science, China University of Petroleum (East China), Qingdao 266580, China
3
School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, China
4
Sinopec Geophysical Research Institute Co., Ltd., Nanjing 211103, China
5
Research Institute of Exploration and Development, Sinopec Oilfield Company, Dongying 257015, China
6
Tuha Division, China Petroleum Logging Co., Ltd., Hami 839009, China
*
Author to whom correspondence should be addressed.
Nanomaterials 2025, 15(3), 235; https://doi.org/10.3390/nano15030235 (registering DOI)
Submission received: 27 December 2024 / Revised: 24 January 2025 / Accepted: 30 January 2025 / Published: 3 February 2025
(This article belongs to the Special Issue Nanomaterials and Nanotechnology for the Oil and Gas Industry)
Versions Notes

Abstract

Clay pores are important storage spaces in shale oil reservoirs. Studying the adsorption behavior of shale oil in clay nanopores is of great significance for reserve assessment and exploitation. In this work, illite clay pore models and multi-component shale oil adsorption models considering light hydrocarbon correction are constructed for carrying out molecular dynamics simulation. We studied the adsorption behavior and characteristics of shale oil in illite pores, and analyzed the effects of reservoir environmental factors such as temperature, pressure and pore size on the adsorption behavior. The results show that in illite nanopores, shale oil can form multiple adsorption layers. The heavier the component, the stronger the interaction with the wall. The adsorption ratio of the component is closely related to the solid–liquid interaction and the molar fraction, which preliminarily reveals the reason why the heavy component content in the produced oil is considerable. The increase in temperature promotes the desorption of light and medium components, while the heavy components and dissolved gas are less affected; although the increase in pressure inhibits diffusion, the adsorption amount changes little, and only the light component increases slightly. This study deeply reveals the adsorption mechanism of shale oil in illite pores, providing a theoretical basis for the optimization and development of shale reservoirs.
Keywords: illite nanopore; adsorption behavior; multi-component shale oil; molecular dynamics simulation illite nanopore; adsorption behavior; multi-component shale oil; molecular dynamics simulation

Share and Cite

MDPI and ACS Style

Zhang, L.; Tan, M.; Liu, X.; Lu, X.; Wang, Q.; Wang, S.; Tian, M.; Wang, J. Insights into Adsorption Behaviors of Multi-Component Shale Oil in Illite Nanopores Under Different Reservoir Conditions by Molecular Simulation. Nanomaterials 2025, 15, 235. https://doi.org/10.3390/nano15030235

AMA Style

Zhang L, Tan M, Liu X, Lu X, Wang Q, Wang S, Tian M, Wang J. Insights into Adsorption Behaviors of Multi-Component Shale Oil in Illite Nanopores Under Different Reservoir Conditions by Molecular Simulation. Nanomaterials. 2025; 15(3):235. https://doi.org/10.3390/nano15030235

Chicago/Turabian Style

Zhang, Lingtan, Maojin Tan, Xuefeng Liu, Xiaoqing Lu, Qian Wang, Siyu Wang, Min Tian, and Junjie Wang. 2025. "Insights into Adsorption Behaviors of Multi-Component Shale Oil in Illite Nanopores Under Different Reservoir Conditions by Molecular Simulation" Nanomaterials 15, no. 3: 235. https://doi.org/10.3390/nano15030235

APA Style

Zhang, L., Tan, M., Liu, X., Lu, X., Wang, Q., Wang, S., Tian, M., & Wang, J. (2025). Insights into Adsorption Behaviors of Multi-Component Shale Oil in Illite Nanopores Under Different Reservoir Conditions by Molecular Simulation. Nanomaterials, 15(3), 235. https://doi.org/10.3390/nano15030235

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