Water influx - Pot aquifer model

Input(s)

$c_{t}$: Aquifer Total Compressibility $(1 / \mathrm{psi})$

$W_{i}$: Initial Volume of Water in Aquifer (bbl)

$P_{i}$: Initial Reservoir Pressure (psi)

P: Current Reservoir Pressure (Pressure at Oil-Water Contact) (psi)

Output(s)

$W_{e}$: Cumulative Water Influx (bbl)

Formula(s)

$$ W_{e}=c_{t} * W_{i} *\left(P_{i}-P\right) $$

Reference(s)

Ahmed, T., McKinney, P.D. 2005. Advanced Reservoir Engineering, Gulf Publishing of Elsevier, Chapter: 2, Page: 152.