Inertial property of oscillatory flow for pulse injection in porous media

The low-frequency pulse wave makes the velocity of fluid in reservoir fluctuate dramatically, which results a remarkable inertia force. Darcy’s law was inapplicable to flow with strong effect inertial In this paper, non-Darcy equation and calculation method capillary number pressure displacement are established. experiments single-phase two- phase carried out. show that periodic change can decrease seepage resistance enhance apparent permeability by generating higher frequency improves enhancing influence increase high core is larger than low core, indicates force more prominent reservoir. For water-oil two-phase flow, relative curve move towards right, equal point becomes higher. other words, number, part residual oil activated, efficiency improved.