Pseudo-steady state radial flow equation
Input(s)
k: Permeability \((\mathrm{mD})\)
h: Thickness of Reservoir (ft)
\(P_{i}\): Average Reservoir Pressure (psi)
\(P_{w f}\): Well Flowing Pressure (psi)
B: Formation Volume Factor (bbl/STB)
\(\mu\): Viscosity \((\mathrm{cP})\)
\(r_{e}\): Drainage Radius (ft)
\(r_{w}\): Wellbore Radius (ft)
Output(s)
\(Q\): Flow Rate (STB/day)
Formula(s)
\[
Q=\frac{0.00708 * k * h *\left(P_{i}-P_{w f}\right)}{B * \mu *\left(\ln \left(\frac{r_{e}}{r_{w}}\right)-0.75\right)}
\]
Reference(s)
Ahmed, T., McKinney, P.D. 2005. Advanced Reservoir Engineering, Gulf Publishing of Elsevier, Chapter: 1, Page: 33 .