通过分子动力学研究水-油-伊利特界面上的pH影响
Anderson Arboleda-Lamus1, Leonardo Muñoz-Rugeles1,2, Jorge M Del Campo3
1Laboratorio de Espectroscopía Atómica y Molecular (LEAM), Universidad Industrial de Santander, Colombia. emejia@uis.edu.co.
Physical chemistry chemical physics : PCCP
|January 3, 2025
概括
这项研究使用分子动力学来研究pH值如何影响石油和天然气应用中的illite矿物质的湿透性. 结果显示,pH显著影响了illite表面和油/水乳液之间的相互作用,影响了回收过程.
科学领域:
- 地质化学 地质化学
- 材料科学 材料科学 材料科学
- 石油工程是石油工程中的一个.
背景情况:
- 伊利特是页岩中的一个关键矿物,影响了石油和天然气的回收.
- 了解illite湿度对于优化提取过程至关重要.
- 乳液在矿物水界面上的行为是复杂的,并且取决于pH值.
研究的目的:
- 为了研究pH值对illite晶体平面的湿度的影响.
- 模拟illite表面和各种油/水乳液模型之间的相互作用.
- 为石油和天然气行业提供与乳液行为相关的见解.
主要方法:
- 关于illite (001) 和 (010) 平面的原子分子动力学模拟.
- 油性相的建模使用赫,托卢和功能化赫混合物.
- 计算接触角度和滴水高度,以评估表面亲和力.
主要成果:
- 水在反向乳液中 (接触角度<45°) 显示出对伊利特表面的高度亲和力,低pH时的酸除外.
- 在水中的油滴一般不会粘附于伊利特;由于结合,酸滴滴的相互作用有限.
- 充电乳液 (heptanoate和hexylammonium) 在特定的pH值范围内表现出来自illite表面的排斥力.
结论:
- pH值在确定ILITE湿透性和乳液稳定性方面起着至关重要的作用.
- 结合和静电相互作用决定了伊利特和乳液成分之间的亲和力.
- 这些发现为在页岩层中加强石油回收策略提供了有价值的数据.
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