With θ wettability contact, σ is surface tension, and r pore size or curvature of the fluid surface. Capillary pressure data known as wetting phase function. Conversion of laboratory data required to determine the reservoir to reservoir capillarity. | With θ wettability contact, σ is surface tension, and r pore size or curvature of the fluid surface. Capillary pressure data known as wetting phase function. Conversion of laboratory data required to determine the reservoir to reservoir capillarity. |