Discussion on the rising segment of the mercury extrusion curve in the high pressure mercury intrusion experiment on shales

In order to explain the rising segment of the mercury intrusion curve in the high pressure (60,000 psi) mercury intrusion tests on shales, this study implemented a series of analyses on 7 Lower Silurian Longmaxi Formation shale samples from 4 wells in the Sichuan Basin, China, including helium-based porosity, TOC abundance and X-ray diffraction. Two pressure balance time values, namely 30 s and 60 s, were used in the high pressure mercury...