阳离子表面活性剂对石油-水-岩石相互作用的影响,通过改进的冲火方法
Tie Kuang1,2, Yubo Lan1,2, Zhilin Yin1,2
1Heilongjiang Key Laboratory of Reservoir Physics&Fluid Mechanics in Porous Medium, Daqing 163712, China.
Molecules (Basel, Switzerland)
|June 27, 2024
概括
这项研究研究了石油-水-岩石相互作用,以加强石油回收. 无离子表面活性剂HABS和PS显著降低了油脂对油砂的附着性,有助于储水池中的油位移.
科学领域:
- 石油工程是石油工程中的一个.
- 表面化学 表面化学
- 增强石油回收的方法
背景情况:
- 地下油库具有复杂的结构和小的孔喉,需要对石油-水-岩石相互作用进行研究,以改善石油回收.
- 了解湿度和表面自由能量对于优化化学洪水策略至关重要.
研究的目的:
- 通过各种极性溶剂和阳离子表面活性剂 (HABS和PS) 调查油砂的湿透性.
- 确定这些物质对石油-水-岩石相互作用的影响,特别关注粘附和移位.
- 为增强石油回收提供对石油排位机制的见解.
主要方法:
- 改进了Washburn毛细血管上升方法,以提高粉末的可湿性.
- 用OWRK方法计算表面自由能量.
- 使用原油,溶剂和表面活性剂 (HABS,PS) 在临界微粒度 (CMC) 以上和以下的湿湿实验.
- 应用方程来确定三相接触角和粘附工作.
主要成果:
- 与模拟水相比,HABS和PS溶液增加了接触角度,这表明湿度发生了变化.
- 无论是HABS还是PS,都显著降低了原油和油砂之间的粘附作用,从而促进了油膜的剥离.
- 与PS不同,HABS显示了C×cosθ的度依赖性下降,可能是由于总体结构差异.
- 原油在油砂上的湿率低于溶剂和表面活性剂的湿率.
结论:
- 无离子表面活性剂HABS和PS通过减少油脂对储岩石的粘附来提高石油回收的显著潜力.
- 这项研究提供了对储水孔中化学洪水的机理性理解,这对于优化油位移至关重要.
- 定制表面活性剂的特性,如聚合物结构,可以影响它们在石油回收过程中的有效性.
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