Abstract
The wettability of minerals plays a pivotal role in determining the distribution of residual oil and devising effective flooding strategies for enhanced oil recovery. Utilizing molecular dynamics simulations, we investigated the surface wettability of various typical minerals. The simulation results illustrate that the modeled crude oil spreads completely on most mineral surfaces. We proposed an efficient approach to calculate the spreading coefficient of the modeled crude oil on mineral surfaces, yielding accurate predictions of the spreading state — whether it is completely spread or not. Compared with the conventional spreading simulation method, our approach offers significant time savings in the calculations. Additionally, our findings underscore the influence of various crude oil components on mineral surface wettability, emphasizing the crucial role of microscopic interactions between these components and the mineral. These insights contribute to a refined understanding of mineral surface wettability and its correlation with crude oil composition, offering valuable guidance for optimizing reservoir management and production strategies.
Published Version
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