Capillary adsorption effects in gas condensate systems in tight rocks

Author: S. Nagy 

This paper summarizes some experimental work performed with a porous media core in the PVT cell and discusses impact adsorption/capillarity and gravity phenomena on the Vapour-Liquid Equilibria (VLE) properties of gas condensate and near-critical oil systems.

The influence of adsorption/capillary effects is investigated theoretically using the cubic equation of state (CEOS) and a modified Kelvin equation.

Computation of saturation-curve movement under the curvature of porous media and other volumetric end phase equilibrium parameters arc discussed.