화학공학소재연구정보센터
Journal of the Chinese Institute of Chemical Engineers, Vol.32, No.1, 57-61, 2001
Measurement and analysis of single phase water flow through fractured and non-fractured low permeability porous media
In order to have a better understanding of flow phenomena through fractured low permeability tight porous media, a series experiments of single phase water flow through non-fractured and fractured tight sand media at different inlet, outlet and overburden pressures were performed. The experimental data obtained for both fractured and non-fractured samples were analyzed using the Darcy equation. The results showed good potential of the Darcy flow formulation for describing water flow behavior in both fractured and non-fractured media under different overburden and system pressures. Furthermore, the single-phase transient experiments compared well with steady state runs. This proves the reliability of transient data that results in significant savings in time and expense in low permeability core analysis. Our experimental results showed a decrease in water flow rate and permeability due to an increase in confining pressure, for both non-fractured and fractured media. A higher value of water flow rate and permeability for the fractured medium compared to the non-fractured medium was obtained, which is due to a different flow pattern in the neighborhood of the fracture and an overall increase in permeability due to fracturing.