Specific type of Production Analysis (PA) workflow based on correlation between single-well or multi-well production/injection history and field-average formation pressure
It may also include BHP pressure data records if they are available and were varying over time.
The key assumption of MatBal is a pseudo-steady state correlation between cumulative offtakes/intakes and formation pressure dynamics.
It does not require new data acquisition at well site and makes use of existing dynamic data records.
There are two major engines of MatBal analysis:
| MatBal Pressure @model | MatBal Flow @model |
| Formation pressure model only | Formation pressure and flowrate model |
Objectives
| 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 |
See Also
Petroleum Industry / Upstream / Production / Subsurface Production / Field Study & Modelling / Production Analysis / Material Balance Analysis
[ Material Balance Pressure @model ] [ Material Balance Flow @model ]
[ Material Balance Analysis (MatBal) ]