Average permeability for linear flow - Series beds
Input(s)
\(k_{1}\): Permeability for layer \(1(\mathrm{mD})\)
\(k_{2}\): Permeability for layer \(2(\mathrm{mD})\)
\(k_{3}\): Permeability for layer \(3(\mathrm{mD})\)
\(L_{1}\): Length of layer \(1(\mathrm{ft})\)
\(L_{2}\): Length of layer \(2(\mathrm{ft})\)
\(L_{3}\): Length of layer \(3(\mathrm{ft})\)
Output(s)
\(k_{\text {avg }}\): Average Permeability in Linear Systems Series (mD)
Formula(s)
\[
k_{a v g}=\frac{L_{1}+L_{2}+L_{3}}{\frac{L_{1}}{k_{1}}+\frac{L_{2}}{k_{2}}+\frac{L_{3}}{k_{3}}}
\]
Reference(s)
Ahmed, T. (2006). Reservoir Engineering Handbook. Elsevier, Page: 240.