initial oil saturation:
p(t) = p_i + \frac{\Delta Q(t)}{V_e \cdot c_t} |
where
| Cumulative Voidage Replacement Balance (CVRB) | |
| 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: | |
| fluid compressibility of water phase, oil phase and gas phase |
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