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In case the bottomhole pressure data is not available it is considered constant over time.
Motivation
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Production rate in producing well depends on its productivity index
, current formation pressure LaTeX Math Inline body J
and current BHP LaTeX Math Inline body p_e
:LaTeX Math Inline body --uriencoded--p_%7Bwf%7D
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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 |
| 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 the drainage volumes of all producers stay the same throughout the modelling period |
| Only applicable for specific subset of PSS fluid flow regimes |
Technology
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The CRM trains linear correlation between variation of production rates against variation of injection rates with account of bottom-hole pressure history records in producers.
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See Also
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Petroleum Industry / Upstream / Production / Subsurface Production / Field Study & Modelling / Production Analysis
[ Capacitance-Resistivity Model @model ]
References
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