Wellbore storage due to fluid level

Input(s)

$A_{a}$: Annulus Cross Sectional Area $\left(\mathrm{ft}^{2}\right)$

$\rho$: Wellbore Fluid Density $\left(\mathrm{lb} / \mathrm{ft}^{3}\right)$

Output(s)

$C_{F L}$: Wellbore Storage Coefficient (bbl/psi)

Formula(s)

$$ C_{F L}=\frac{144 * A_{a}}{5.615 * \rho} $$

Reference(s)

Ahmed, T., McKinney, P.D. 2005. Advanced Reservoir Engineering, Gulf Publishing of Elsevier, Chapter: 1, Page: 49 .