Mercury injection experiment was conducted over 25 core samples, which could help to calculate the rock fractal factor and quantitative describe the heterogeneity of multiple porosity sandstone.

• 建立了砂岩孔隙结构评价的分形结构因子法,25块岩心压汞资料的计算结果表明,这种方法可以定量表示岩石的非均质性。