Horizontal well critical rate correlations - Giger and Karcher
Input(s)
\(\Delta \rho\): Specific Gravity Difference \((\mathrm{g} / \mathrm{cc})\)
\(\mathrm{h}\): Thickness \((\mathrm{m})\)
\(\mu\): Oil Viscosity (mPa s)
B: Oil Formation Volume Factor (RB/STB)
\(k_{h}\): Horizontal Permeability \((\mathrm{mD})\)
L: Distance Between Lines of Horizontal Wells (m)
\(\mathrm{g}\): Acceleration of Gravity \(\left(\mathrm{m} / \mathrm{s}^{2}\right)\)
Output(s)
\(q_{c}\): Critical Oil Rate \(\left(\mathrm{m}^{3} /\right.\) day \()\)
Formula(s)
\[
q_{c}=\left(\frac{k_{h} * h^{2} * g * \Delta \rho}{B * \mu * L}\right) *\left(1-\left(\left(\frac{1}{6}\right) *\left(\frac{h}{L}\right)^{2}\right)\right)
\]
Reference(s)
B.J. Karcher, E.F. Aquitaine, F.M. Giger, Some Practical Formulas to Predict Horizontal Well Behavior. 1986. SPE ATCE, New Orleans, Louisiana.