Material balance analysis for oil and gas reservoirs. Initial hydrocarbon in place and production forecasts are generated using PVT (Pressure-Volume-Temperature) and historical injection and production data. The current version provides history-match and prediction models for dry-gas, wet-gas, gas condensate, volatile oil, and black oil reservoirs. Walsh, M. P., Ansah, Joseph, and Raghavan, Rajagopal (1994)