ABSTRACT
Displacement pressure and maximum pore throat: an important quantitative characteristic parameter on the capillary pressure curve is the converted breakthrough capillary pressure, which refers to the pressure at which the non-wetting phase begins to enter the maximum throat of the porous core, that is, the pressure at which the non -wetting phase begins to enter the core, sometimes referred to as displacement pressure or valve pressure, which corresponds to the capillary pressure at the maximum throat radius of the core.
