碳酸盐岩中的湿度及其过渡机制的定量分析,基于表面能量表征
Jiyue Zhang1, Zhihong Kang1, Jiaqi Li1
1School of Energy Resources, China University of Geosciences Beijing, Beijing 100083, China.
Langmuir : the ACS journal of surfaces and colloids
|April 22, 2025
概括
高温和青吸附改变碳酸盐岩石的湿透性. 了解这些变化是优化油库中碳化合物回收的关键.
科学领域:
- 石油地质科学 石油地质科学
- 表面化学 表面化学
背景情况:
- 碳酸盐水库的湿透性对石油的发生和回收效率产生了重大影响.
- 已知高温和青吸附可显著改变碳酸盐的湿透性.
研究的目的:
- 量化评估温度和青对碳酸盐浸湿性的影响.
- 阐明碳酸盐在不同条件下的可湿性转化机制.
主要方法:
- 逆气色谱被用来测量奥尔多维纪碳酸盐样本 (30-130°C) 的表面能量.
- 应用了扬方程和范奥斯理论来计算界面张力和接触角.
- 分析了岩石,石油和水的表面能量组成部分,以进行定量性湿透性评估.
主要成果:
- 温度升高最初降低,然后增加非极地表面能量,并增强了基本组件.
- 较高的温度加强了由于增加了酸性和基本的表面能量成分而导致的水湿特性.
- 青吸附加剧了油湿,增加了轻油水系统中的水接触角度.
结论:
- 碳酸盐的湿透性取决于温度,极性增加增强了水友性.
- 青吸附通过自发吸附和增加水接触角度促进油湿.
- 轻油的最佳回收温度为60-100°C,而青丰富的水库则为100-110°C.
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