Approximation of Material Balance Pressure @model for slightly compressibility flow:
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p(t) = p_i + \frac{\Delta Q(t)}{V_e \cdot c_t} |
where
| Cumulative Voidage Replacement Balance (CVRB) over time | ||||||||
| initial drainage volume of the main pay (excluding the aquifer and gas cap) | ||||||||
| initial porosity | ||||||||
| total compressibility | ||||||||
| pore compressibility | ||||||||
| initial water saturation | ||||||||
| initial gas saturation | ||||||||
| initial oil saturation:
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| fluid compressibility of water phase, oil phase and gas phase |
See Also
Petroleum Industry / Upstream / Production / Subsurface Production / Field Study & Modelling / Production Analysis / Material Balance Analysis (MatBal) / Material Balance Pressure @model
[ Derivation of Slightly compressible Material Balance Pressure @model ]