Water Impact on Adsorbed Oil Detachment From Mineral Surfaces by Supercritical CO2: A Molecular Insight

被引：0
|
作者：
Yang, Yulong [1 ,2 ]
Gao, Rui [1 ,2 ]
Sun, Wenyuan [3 ]
Yang, Leilei [1 ,2 ]
Hou, Jirui [1 ,2 ]
机构：
[1] China Univ Petr, State Key Lab Petr Resources & Engn, Beijing, Peoples R China
[2] China Univ Petr, Unconvent Petr Res Inst, Beijing, Peoples R China
[3] China Univ Petr, Coll Mech & Transportat Engn, Beijing, Peoples R China
来源：
GEOPHYSICAL RESEARCH LETTERS | 2024年 / 51卷 / 09期
关键词：
FORCE-FIELD; COMPASS; WETTABILITY; INTERFACES; DIFFUSION; MECHANISM; RECOVERY; SILICA;
D O I：
10.1029/2024GL108208
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
Geochemical reactions are crucial for in situ CO2 mineralization underground associated with CO2-enhanced oil recovery (CO2-EOR) in a hydrocarbon reservoir. However, the presence of formation water and adsorbed oil on rocks generates physical barriers to CO2's access to mineral surfaces, which may yield impedance to CO2 mineral trapping that has yet to be accounted for. In this study, we mimic the dynamic oil detachment process using molecular dynamic (MD) simulation and analyze the influence of an adsorbed oil film on supercritical CO2 (scCO(2)) diffusion toward the mineral surface in the presence and absence of a water phase. Our results demonstrated a negative impact of water on oil film detachment by scCO(2), which may weaken mineral reactions and is unfavorable for mineralized CO2 storage underground.
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页数：9
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