Abstract: Nuclear Magnetic Resonance Imaging is a powerful tool far the visualisation of fluids saturated in rock cores.The inter-structure of rocks can be visualized by this methos;the distribution of oil,water and other displacing fluids can be determined seperatally;the procedure of displacement can be monitored.All of these are helpful to EOR.In this paper,the principle of NMR imaging is reviewed,variors examples of NMR imaging in rock samples are introduced.

Key words: rock, nuclear magnetic resonance, application, enhanced oil recovery

摘要： 核磁共振成像是一种成熟的快速无损高分辨检测新技术,可以直观地显示多孔固体孔隙中的流体.用核磁共振自旋密度成像,能给出岩样中孔隙的二维或三维分布以及驱替过程中驱替前沿的推进过程;用核磁共振化学位移选择成像,能分别给出岩样孔隙中油与水的赋存状态;用核磁共振驰豫时间加权成像,能分别给出聚合物驱油后油与水及聚合物在岩石孔隙中的滞流位置.它为三次采油微观机理研究提供了强有力的手段.文中简要介绍核磁共振成像原理,通过实例说明核磁共振成像在提高油气采收率研究中的应用潜力.

关键词: 岩石, 核磁共振, 应用, 提高油气采收率