多孔岩芯渗透率与孔隙度的MRI研究

MRI STUDIES OF PERMEABILITY AND POROSITY IN POROUS CORE

运用自旋回波序列，得到一系列用盐水饱和的多孔岩芯的磁共振自旋密度象，可以直观、准确地观察岩芯的结构，并对象的信号强度与渗透率和孔隙度之间的相关关系进行了分析，发现它们之间存在良好的定性关系，得到了较好的结果．

By employing spin echo sequence, the proton spin density micro images of a series of sandstone samples saturated with brine were obtained. The images provided detailed description of internal structure of porous core. These results show that MRI method not only can provide qualitative description of some properties such as porosity and permeability, and is also possible in the future to measure thess physical parameters quantitatively.