Additional pressure drop in the skin zone
Input(s)
\(Q_{o}\): Well Flow Rate (STB/day)
\(B_{o}\): Oil Formation Volume Factor \((\mathrm{bbl} / \mathrm{STB})\)
\(\mu_{o}\): Oil Viscosity \((\mathrm{cP})\)
k: Reservoir Permeability \((\mathrm{mD})\)
\(\mathrm{h}\): Thickness \((\mathrm{ft})\)
S: Skin (dimensionless)
Output(s)
\(\Delta P_{\text {skin }}\): Pressure Drop Due to Skin (psi)
Formula(s)
\[
\Delta P_{\text {skin }}=\left(\frac{141.2 * Q_{o} * B_{o} * \mu_{o}}{k * h}\right) * S
\]
Reference(s)
Ahmed, T., McKinney, P.D. 2005. Advanced Reservoir Engineering, Gulf Publishing of Elsevier, Chapter: 1, Page: 37.