Abstract：By measuring the porosity and permeability of core samples under different pressures, their relations with pressure are obtained. The results show that porosity and permeability decrease as pressure increases and obey the rule of logarithm function. However, the changing trends are quite different for sandstone samples between different intervals of porosity and permeability. The effect of pore structure on porosity and permeability are confirmed through the capillary pressure curve and nuclear magnetic resonance(NMR) T2 spectrogram of sandstone samples with different grain sizes. The microstructure is the key factor that determines permeability.
张丽华, 潘保芝, 单刚义. 围压和孔隙结构对不同粒级砂岩孔隙度渗透率的影响实验研究[J]. 地质与资源, 2018, 27(3): 288-292.
ZHANG Li-hua, PAN Bao-zhi, SHAN Gang-yi. EXPERIMENTAL STUDY ON THE EFFECTS OF CONFINING PRESSURE AND PORE STRUCTURE ON POROSITY AND PERMEABILITY OF SANDSTONES WITH DIFFERENT GRAIN SIZES. GEOLOGY AND RESOURCES, 2018, 27(3): 288-292.
2018, Vol. 27 
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