| 页岩矿物不同润湿性表征与吸附微观机理 |
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| 引用本文： | 余曹,张玉苹,汪周华,赵建飞,刘煌,廖浩奇,王烁石,胡义升.页岩矿物不同润湿性表征与吸附微观机理[J].原子与分子物理学报,2024,41(2):021006-50. |
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| 作者姓名： | 余曹 张玉苹 汪周华 赵建飞 刘煌 廖浩奇 王烁石 胡义升 |
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| 作者单位： | 1. 西南石油大学油气藏地质与开发工程国家重点实验室;2. 中石化西南石油工程公司钻井工程研究院 |
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| 基金项目： | 国家自然科学基金(52074236,51836003)； |
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| 摘 要： | 无机矿物作为页岩气吸附的重要载体，其表面性质对甲烷吸附能力有着重要影响，而润湿性作为固体重要表面性质之一，对矿物气体吸附能力的影响不可忽视.文章以蒙脱石和石英作为研究对象，通过对矿物表面甲基化(-CH3)和羟基化(-OH)处理来改变其润湿性，以探究无机矿物表面润湿性对甲烷吸附能力的影响.采用分子动力学方法研究矿物体系的润湿性，用接触角对润湿性进行定量表征，并构建纳米狭缝，结合巨正则蒙特卡罗方法模拟润湿性改变前后，CH4在矿物中的吸附变化.研究结果表明，水滴在羟基化矿物表面迅速破裂并铺展在矿物表面，而在甲基化表面铺展程度较小，普遍呈半球形.羟基化蒙脱石和石英表面的润湿接触角分别为12.7°和26.5°,均小于其甲基化表面接触角62.5°和85.7°.甲基化矿物甲烷吸附量均高于其羟基化，气体几乎大都以吸附状态位于孔隙壁面，随着矿物亲水性的减弱，其对甲烷吸附能力增强.
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| 关 键 词： | 蒙脱石 石英 润湿 吸附 分子模拟 |
| 收稿时间： | 2022/7/4 0:00:00 |
| 修稿时间： | 2022/7/26 0:00:00 |
The influence of mineral wettability on the adsorption of shale gas |
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| Yu Cao,Zhang Yu-Ping,Wang Zhou-Hu,Zhao Jian-Fei,Liu Huang,Liao Hao-Qi,Wang Shuo-Shi and Hu Yi-Sheng.The influence of mineral wettability on the adsorption of shale gas[J].Journal of Atomic and Molecular Physics,2024,41(2):021006-50. |
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| Authors: | Yu Cao Zhang Yu-Ping Wang Zhou-Hu Zhao Jian-Fei Liu Huang Liao Hao-Qi Wang Shuo-Shi and Hu Yi-Sheng |
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| Institution: | State Key Laboratory of oil and gas reservoir geology and Development Engineering,Drilling Engineering Research Institute of Sinopec Southwest Petroleum Engineering Company,State Key Laboratory of oil and gas reservoir geology and Development Engineering,State Key Laboratory of oil and gas reservoir geology and Development Engineering,State Key Laboratory of oil and gas reservoir geology and Development Engineering,State Key Laboratory of oil and gas reservoir geology and Development Engineering,State Key Laboratory of oil and gas reservoir geology and Development Engineering and State Key Laboratory of oil and gas reservoir geology and Development Engineering |
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| Abstract: | |
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| Keywords: | Montmorillonite Quartz Wetting Adsorption Molecular simulation |
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