Pore-scale characterization of tight sandstone in Yanchang Formation Ordos Basin China using micro-CT and SEM imaging from nm- to cm-scale

In this work, we measured the porosity, permeability, electrical resistivity and NMR T2 spectrum of the tight sandstone samples from Yanchang Formation Ordos Basin China. The experimental results indicate weak correlation between porosity and other bulk properties. A workflow of multi-scale digital rock technique is proposed to characterize pore geometry and connectivity in order to understand the ability of fluid flow or electric conduct of...