油页岩
吸附
干酪根
伊利石
纳米孔
化学工程
材料科学
扩散
矿物学
分子动力学
图层(电子)
粘土矿物
化学物理
复合材料
地质学
化学
热力学
有机化学
纳米技术
烃源岩
计算化学
古生物学
物理
构造盆地
工程类
作者
Yujia Fang,Zhongxiao Li,Er Long Yang,M. Ameen Sha,Shuling Song
出处
期刊:Molecules
[MDPI AG]
日期:2024-01-08
卷期号:29 (2): 312-312
标识
DOI:10.3390/molecules29020312
摘要
The molecular dynamics simulation was used to simulate the influence of the composite wall stacking effect on shale oil occurrence. The kerogen-illite heterogeneous wall pore model was established to study the effects of temperature, pore size, and wall component ratio on the adsorption ratio and diffusion capacity of shale oil. The calculation results show that the fluid density distribution in the hybrid nanopore is not uniform. When the pore size increases, the proportion of the first adsorption layer to the total adsorption amount decreases rapidly, and the phenomenon of the "solid-like layer" of shale oil in small pores is more obvious. In addition, increases in temperature have little effect on the density peak of the first adsorption layer. With increases in organic matter content in the shale pore model, the diffusion coefficient of fluid decreases gradually, along with adsorption capacity. The influence of the irregular arrangement of kerogen molecules on the adsorption of shale oil is greater than the influence of surface roughness caused by illite on the adsorption.
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