Comparisons of SEM, Low-Field NMR, and Mercury Intrusion Capillary Pressure in Characterization of the Pore Size Distribution of Lacustrine Shale: A Case Study on the Dongying Depression, Bohai Bay Basin, China

This work investigates the use of scanning electron microscopy (SEM), low-field nuclear magnetic resonance (NMR) relaxation, and mercury intrusion capillary pressure (MICP) to reveal the pore size distribution (PSD) characteristics of shales. The comparisons were conducted using six shale samples from the Dongying Depression, Bohai Bay Basin, China. The results show that SEM can effectively reveal the PSD of shale but cannot detect micropores...