ABSTRACT A phenomenological model for fracture capillary pressure has been proposed. In this model, the fracture faces are assumed to be covered with cones, where every cone contacts the tip of another opposing cone. Cones in contact at the tip represent both roughness and aperture of a fracture surface. The solution to the Laplace-Young equation of capillarity is used to relate the fracture capillary pressure to the saturation. The computed Pc-saturation results show a porous-media behavior for the fracture capillary pressure. Experiments with a stack of small matrix blocks in a centrifuge were also conducted. The measured production rates, and the matrix block saturations at the termination of the experiments confirm the validity of the porous-media model for the fracture capillary pressure. In some of the experiments, capillary pressure as high as 40 psi [0.275 MPa] could be imposed on the fractures of the stack of blocks that were used in the centrifuge experiments.