Average permeability for parallel-layered systems

Input(s)

$k_{1}$: Permeability for Layer $1(\mathrm{mD})$

$k_{2}$: Permeability for Layer $2(\mathrm{mD})$

$k_{3}$: Permeability for Layer $3(\mathrm{mD})$

$h_{1}$: Height of Layer $1(\mathrm{ft})$

$h_{2}$: Height of Layer $2(\mathrm{ft})$

$h_{3}$: Height of Layer $3(\mathrm{ft})$

Output(s)

$k_{\text {avg }}$: Average Permeability for Parallel-layered Systems (mD)

Formula(s)

$$ k_{\text {avg }}=\frac{k_{1} * h_{1}+k_{2} * h_{2}+k_{3} * h_{3}}{h_{1}+h_{2}+h_{3}} $$

Reference(s)

Ahmed, T. (2006). Reservoir Engineering Handbook. Elsevier, Page: 237.