三种可视化技术在驱油剂评价中的适应性

Adaptability Analysis of Three Kinds of Visualization Techniques in the Evaluation of Oil Displacement Agent

针对可视化技术在驱油剂评价中适用范围不明确的问题,对比了可视化微观物理驱替模型、计算机X线断层扫描(CT)和核磁共振成像(MRI)三种可视化技术的原理与功能,分析了它们在驱油剂评价中的应用范围与存在的问题。可视化微观物理驱替模型和CT适用于驱油剂驱油机理的研究,前者侧重于微观,后者侧重于宏观;CT和MRI适用于驱油剂驱油性能的评价,前者侧重于轻质油体系下剩余油饱和度的沿程分布,后者侧重于稀油体系下剩余油在不同孔径孔隙内的分布。

In order to solve the problem that the adaptability of visualization techniques in the evaluation of oil displacement agent was not clear, the principles and fimctions of visual micro displacement model, X-ray computed tomography （CT） and magnetic resonance imaging （MRI） were compared. Furthermore, three kinds of visualization techniques＇ applications and existing problems in the evaluation of oil displacement agent were summarized. Visual micro displacement model and CT were suitable for the study of oil displacement agent flooding mechanism. The former method focused on the micro analysis, and the latter method focused on the macro analysis. CT and MRI were applicable for the evaluation of oil displacement performance. The former focused on the saturation distribution of residual oil along the way with light oil system, the latter focused on the distribution of remaining oil in different pore size with dilute oil system.