Page 346 - Principles of Applied Reservoir Simulation 2E

Part V: Technical Supplements 331

dimensional, three-phase flow equations by first numerically solving the pressure
equation for P 0, then using the results in Eqs. (32.18), (32.19) and (32.27) to find
the phase saturations. This procedure is an example of a numerical method
known as the IMplicit Pressure/Explicit Saturation (IMPES) procedure.