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Updated: May 30, 2025

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复合表面活性剂系统具有优越的油位移性能:油-水和油-固体接口的平衡协同效应
Zifan Song1,2, Xiao Jin3, Xiaolong Wang1,2
1Shandong Key Laboratory of Oilfield Chemistry, Department of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China.
Langmuir : the ACS journal of surfaces and colloids
|January 27, 2025
概括
使用酸劳里克乙醇胺硫酸盐 (HLDEA) 和非聚氧乙烯硫酸盐 (NPES) 的新油位移系统通过降低界面张力和控制岩石湿度,显著提高了油的回收.
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:
- 原油对树脂-青层的粘附性限制了油的回收,这是由于强烈的油固体相互作用造成的.
- 传统的油位移系统很难控制油性岩石表面的湿度,尽管可以降低界面张力.
研究的目的:
- 开发一个高效的油位移系统,结合湿度控制和超低油水界面张力.
- 调查HLDEA和NPES对提高石油回收的协同效应.
主要方法:
- 化合物是非聚氧乙烯乙硫酸盐 (NPES) 和酸乙醇胺硫酸盐 (HLDEA).
- 评估界面张力,湿度 (水下油接触角度) 和在恶劣条件下 (高温和盐度) 的系统稳定性.
- 与水淹和商业系统相比,评估石油回收率.
主要成果:
- HLDEA + NPES系统实现了3.8 × 10−3 mN·m−1的超低界面张力和157.2°的水下油接触角度.
- 该系统在高达110°C的温度和高盐度 (1 × 105 mg·L-1 NaCl,7 × 103 mg·L-1 Ca2+) 的温度下表现出稳定性.
- 石油回收增长了28.7%的水上洪水和7.8%的商业系统.
结论:
- HLDEA和NPES的协同作用增强了界面膜的稳定性和可湿性控制.
- 该系统有效地平衡了油-水和油-固体接口相互作用,促进了油膜剥离和液滴迁移.
- 这种新的系统显著提高了在具有挑战性的水库中石油回收率.
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