Paper I: Dale, E. I., and Skauge, A.: “Fluid Flow Properties of WAG Injection Processes”, paper for the 13th European Symposium on Improved Oil Recovery, Budapest, Hungary, 25. – 27. April 2005. The article is available at: http://hdl.handle.net/1956/5262Paper II: Dale, E. I., and Skauge, A.: “Features Concerning Capillary Pressure and the Effect on Two-Phase and Three-Phase Flow”, paper for the 14th European Symposium on Improved Oil Recovery, Cairo, Egypt, 22. – 24. April 2007. The article is available at: http://hdl.handle.net/1956/5263Paper III: Dale, E. I., and Skauge, A.: “Influence of Capillary Pressure on Estimation of Relative Permeability for Immiscible WAG Processes”, to be submitted to Journal of Petroleum Science and Engineering. The article is available at: http://hdl.handle.net/1956/5264Paper IV: Dale, E. I., and Skauge, A.: “Effect of implementing three-phase flow characteristics and capillary pressure in simulation of immiscible WAG”. The article is available at: http://hdl.handle.net/1956/5265Paper V: Dale, E. I., van Dijke, M. I. J., and Skauge, A.: “Prediction of Three-Phase Capillary Pressure Using a Network Model Anchored to Two-phase Data”, submitted to Transport in Porous Media. The article is available at: http://hdl.handle.net/1956/5266Paper VI: Holm, R., Kaufmann, R., Dale, E. I., Aanonsen, S., Fladmark, G., Espedal, M., and Skauge, A.: “Constructing Three-Phase Capillary Pressure Functions by Parameter Matching using a Modified Ensemble Kalman Filter”. Full text not available in BORA due to publisher restrictions. The article is available at: http://www.global-sci.com/freedownload/v6_24.pdfPaper VII: Skauge, A., and Dale, E. I.: “Progress in Immiscible WAG Modelling”, SPE 111435, paper for the 2007 SPE/EAGE Reservoir Characterization and Simulation Conference, Abu Dhabi, U.A.E., 28. – 31. October 2007. Full text not available in BORA due to publisher restrictions. The article is available at: http://dx.doi.org/10.2118/111435-MS