用扫描电镜评价高孔渗砂岩储集性能的新方法

A NEW METHOD FOR EVALUATING THE RESERVOIR QUALITY OF HIGH POROSITY AND HIGH PERMEABILITY SANDSTONE RESERVOIR WITH SEM.

通过建立砂岩孔隙喉道的平面模型，利用扫描电子显微镜的图象处理得到的孔隙直径、喉道宽度、面孔率等数据，推导出表征砂岩储集性能的“视渗透率”公式；实验得到的视渗透率数据与渗透率具有较好的相关性。

Based on the plane model of pore throat of sandstone and pore diameter, throat width and percentage pore area from image processing of scanning electric microscope(SEM), apparent permeability formula for characterizing sandstone reservoir quality was derived. The calculation were correlates well with true permeability.