Dimensionless rate (radial flow/constant pressure production)
Input(s)
\(p_{i}\): Initial Reservoir Pressure (psi)
q: Flow Rate (STB/day)
B: Formation Volume Factor (RB/STB)
\(\mu\): Oil Viscosity (cP)
\(\mathrm{k}\): Permeability \((\mathrm{mD})\)
h: Reservoir Thickness (ft)
\(p_{w f}\): Well Flowing Pressure (psi)
Output(s)
\(q_{d}\): Dimensionless Rate (dimensionless)
Formula(s)
\[
q_{d}=\frac{q * B * \mu}{0.00708 * k * h *\left(p_{i}-p_{w f}\right)}
\]
Reference(s)
Lee, J., Rollins, J. B., & Spivey, J. P. (2003). Pressure Transient Testing (Vol. 9). Richardson, Texas: Society of Petroleum Engineers, Page: 9.