MatBal® Software Forecasting Mode
The history matched field model can be used as a basis for forecasting future reservoir performance using off-take or pressure schedules. Forecasting can be performed at the reservoir or well level and four forecasting models are available.
Key results are plotted as forecast progresses.
Reservoir Rate Control
The user specifies field oil production and injection rates. The program calculates reservoir pressures, saturation and secondary phase rates and cumulative production.
Wells can be controlled in one of three ways.
- Tubing head pressure controlled (all well types)
- Rate controlled on main fluid phase (all well types)
- Liquid rate controlled (only for oil producers)
The type of control for individual wells can be changed over the period of the forecast.
Manifold Rate Control
This option is similar to the well control option but in this case the user defines an oil production rate, minimum and maximum manifold pressures and a maximum gas lift rate. The algorithm will try to produce the well at the specified rate and determine the manifold pressure required to achieve that rate.
Manifold Pressure Control
For this option the user specifies a manifold pressure, minimum and maximum production rates (oil, gas, water and liquid) and a maximum gas lift rate and the program will produce the well at the specified pressure (if possible).
Production and abandonment constraints can be applied to individual wells and for gas-lifted systems, MatBal software determines the optimum allocation of lift gas to individual gas lifted wells.