# Maximum height of oil column in cap rock

## Input(s)

\(P_{a}\): Total Potential energy of accumulation (psi)

\(P_{w}\): Water Potential in Reservoir (psi)

\(G_{o}\): Initial oil pressure gradient in Reservoir rock \(\left(\mathrm{cm}^{2}\right)\)

\(\alpha\): Height Constant (dimensionless)

\(\mathrm{h}\): Depth \((\mathrm{ft})\)

\(P_{c}\): Capillary Pressure (psi)

\(\rho\): Density differential between fluids (ppg)

## Output(s)

H: Maximum Height of Oil Column (ft)

## Formula(s)

\[
H=\frac{P_{a}-P_{w}+G_{o} * h * \alpha+P_{c}}{\rho-G_{o}}
\]

## Reference(s)

Tarek Ahmed, Paul McKinney, Advanced Reservoir Engineering, Gulf Publishing House, Burlington, MA, 2015.