基于微流体技术的CO2-EOR在多尺度多孔介质中的流体运输的可视化研究
Jianxiang Wang1, Jiafeng Sun1, Jiawei Shi1
1School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China. bbao@ecust.edu.cn.
Lab on a chip
|March 25, 2025
概括
微流体研究表明,跨度效应促进了 CO2 混合洪水的石油回收,但在不混合洪水中恶化了气体通道. 贾明效应阻碍了复苏,特别是在高孔-喉比率区域.
科学领域:
- 石油工程是石油工程中的一个.
- 化学工程是化学工程的重要组成部分.
- 地质科学是地球科学.
背景情况:
- 传统的石油回收方法面临着效率下降的问题.
- 二氧化碳增强石油回收 (CO2-EOR) 正因其环境和经济效益而受到越来越多的关注.
- 关于微/纳米尺度水库孔中的多相质量转移的了解有限.
研究的目的:
- 调查跨尺度相互作用的影响,网络通道几何,以及在二氧化碳泛滥期间对流体流动和石油回收的Jamin效应.
- 使用微流体技术模拟水库岩石孔状结构.
- 分析二氧化碳混合和不混合的洪水过程.
主要方法:
- 利用微流体技术创建真实的孔隙结构模拟.
- 采用裂纹矩阵和微尺度多孔介质芯片,具有不同孔的比率.
- 进行实验,观察流体流动模式和石油回收率.
主要成果:
- 交叉尺度效应加速了二氧化碳混合洪水的100%恢复,但在不混合洪水中增加了气体通道.
- 在较高的毛孔-喉比率下,Jamin效应加剧了.
- 来自Jamin效应的显著毛细血管阻力降低了高孔-喉比率区域的恢复率.
结论:
- 跨尺度相互作用和贾明效应在复杂的孔状网络中对CO2-EOR性能产生关键影响.
- 优化CO2-EOR策略需要考虑孔尺度物理来提高效率和可持续性.
- 这项研究提供了对多相质量转移的见解,以改善水库管理.
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