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Specific type of Production Analysis (PA) workflow based on correlation between single-well or multi-well production/injection history and field-average formation pressureIt may also include BHP pressure data records if they are available and were varying over time and BHP.
The key assumption of MatBalFMB is a pseudo-steady state correlation between cumulative offtakes/intakes and formation pressure BHP dynamics.
It does not require new data acquisition at well site and makes use of existing dynamic data records.
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There are two major engines of MatBal analysis:
| MatBal Pressure @model | MatBal Flow @model |
| Formation pressure model onlyFormation pressure and flowrate model |
Objectives
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| Check if the field is under volume-constrained production (PSS) |
| Assess drainage volume |
| Assess reservoir compressibility |
| Check if water and gas propagation match uniform sweep model |
| Verify oil/gas FVF |
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