Improved Procedure for alculating Unsteady-State Relative Permeability

1 D04 Improved Procedure for Calculating Unsteady- State Relative Permeability A.S. Lackner and O. Torsæter Abstract Department of Petroleum Engineering and Applied Geophysics the Norwegian University of Science and Technology (NTNU) Norway The effects of capillary number viscosity-ratio and heterogeneity on unsteady - state calculated relative permeability were evaluated. Flow data from simulated waterflooded cores were generated in a 1D black-oil simulation model. Two different methods were used to calculate water and oil relative permeability from the output simulated flow data: First a traditional method that requires measured pressure drop versus time and cumulative volumes produced and second a method