Horizontal well critical rate correlations - Efros
Input(s)
\(\rho_{o}\): Oil Density \((\mathrm{g} / \mathrm{cc})\)
\(\rho_{w}\): Water Density \((\mathrm{g} / \mathrm{cc})\)
\(y_{e}\): Half of Horizontal Well Spacing (ft)
\(\mathrm{h}\): Oil Column Thickness (ft)
\(\mu_{o}\): Oil Viscosity (cP)
\(B_{o}\): Oil Formation Volume Factor (RB/STB)
\(k_{h}\): Horizontal Permeability \((\mathrm{mD})\)
L: Length of Reservoir ( \(\mathrm{ft}\) )
Output(s)
\(q_{o}\): Critical Oil Rate (STB/day)
Formula(s)
\[
q_{o}=\left(4.888 * 10^{-4}\right) * k_{h} * h^{2} *\left(\rho_{w}-\rho_{o}\right) * \frac{L}{B_{o} * \mu_{o} *\left(\left(2 * y_{e}+\left(2 * y_{e}\right)^{2}+\frac{h^{2}}{3}\right)^{0.5}\right)}
\]
Reference(s)
Horizontal Well Technology, Joshi, Page: 286-295.