Perforation friction factor
Input(s)
\(q_{t}\): Total Flow Rate (bbl/min)
\(\mathrm{n}\) : Number of Perforations (dimensionless)
d: Casing Entrance-Hole Diameter (in.)
\(C_{d}\) : Discharge Coefficient (dimensionless)
\(\rho_{o}\): Oil Density (lbf/in. \(\left.{ }^{2}\right)\)
Output(s)
\(p_{f}\): Perforation Friction (Differential Pressure across Perforations) (psi)
Formula(s)
\[
p_{f}=\frac{0.2369 q_{t}^{2} \rho_{o}}{n^{2} d^{4} C_{d}^{2}}
\]
Reference(s)
Bell, W. T., Sukup, R. A., & Tariq, S. M. (1995). Perforating. Henry L. Doherty Memorial Fund of AIME, Society of Petroleum Engineers, Page: 79.