Reservoir simulation is based on well known reservoir engineering equations and techniques - the same equations and techniques the reservoir engineer has been using for years. In general, simulation refers to the representation of some process by either a theoretical or a physical model. Here, we limit ourselves to the simulation of petroleum reservoirs. Our concern is the development petroleum reservoirs. Our concern is the development and use of models that describe the reservoir performance under various operating conditions. performance under various operating conditions. Reservoir simulation itself is not really new. Engineers have long used mathematical models in performing reservoir engineering calculations. Before the performing reservoir engineering calculations.
