Miscibility Characteristics of CO2–Oil in Tight Sandstone Reservoirs: Insights from Molecular Dynamics Simulations
Fangna Liu,
Xiangzeng Wang,
Hong Yang
et al.
Abstract:Identifying the microscopic mechanism of CO 2 −oil miscibility is significant for the CO 2 enhanced oil recovery (CO 2 − EOR) in tight sandstone reservoirs. In this work, the effects of oil composition, formation pressure, temperature, and methane content on the characteristics of the CO 2 −oil miscibility were systematically studied by molecular simulation methods. According to the change of oil−gas centroid displacement, the CO 2 −oil miscibility behavior was divided into four stages: rapid diffusion, CO 2 d… Show more
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