...
- productivity index of producer stays constant in time
- dynamic drainage volume of producer is finite and constant in time (which is equivalent to PSS flow regime)
- total compressibility within the drainage volume of a given producer stays constant in time
Assumption 2 means that interference between producers is fairly constant in time despite the rate variations and their impact on the dynamic drainage volumes.
Goals | Objectives |
| Identify and prioritise production optimisation opportunities | Generate production and formation pressure forecasts based on the bottom-hole pressure and injection rates |
| Identify and prioritise redevelopment opportunities | Assess productivity index of producing wells |
| Identify and prioritise surveillance candidates | Assess dynamic drainage volume around producing wells |
| Quantify connectivity between injectors and producers | |
| Assess water flood efficiency against expectations and / or between wells or well groups |
...
Advantages | Limitations |
| Fast-track | It only models injector-producer system |
| Based on the robust Requires minimum input data (BHP and rates only) | Requires eventful history of injection rates variations |
Robust procedure (no manual setups) | Requires productivity index of producers to stay constant |
| Does not involve full-field 3D dynamic modelling and associated assumptions | Requires productivity index of producers to stay constantRequires production sharing between the drainage volumes of all producers stay approximately the same throughout the timemodelling period |
| Only applicable for specific subset of PSS fluid flow regimes |
Technology
...
CRM trains linear correlation between variation of production rates against variation of injection rates with account of bottom-hole pressure history records in producers.
...