Specific type of Production Analysis (PA) workflow based on correlation between single-well or multi-well production/injection history and field-average formation pressure.
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 |
In some cases a similar analysis can be performed using the correlation between production/injection history and BHP which is called Flowing Material Balance Analysis (FMB).
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 ]
[ Flowing Material Balance Analysis (FMB) ]