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Permeability Calculators

Use 13 permeability petroleum engineering calculators with formulas, inputs, outputs, units, and source references.

Permeability calculators group related upstream petroleum engineering formulas by workflow so engineers can find the right calculation faster.

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Reservoir EngineeringPermeability

Average Permeability for Linear Flow - Series Beds

kavg=L1+L2+L3L1k1+L2k2+L3k3k_{avg} = \frac{L_1 + L_2 + L_3}{\frac{L_1}{k_1} + \frac{L_2}{k_2} + \frac{L_3}{k_3}}
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Reservoir EngineeringPermeability

Average Permeability for Linear Flow in Layered Beds

kavg=k1A1+k2A2+k3A3A1+A2+A3k_{avg} = \frac{k_1 A_1 + k_2 A_2 + k_3 A_3}{A_1 + A_2 + A_3}
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Reservoir EngineeringPermeability

Average Permeability for Parallel-Layered Systems

kavg=k1h1+k2h2+k3h3h1+h2+h3k_{avg} = \frac{k_1 h_1 + k_2 h_2 + k_3 h_3}{h_1 + h_2 + h_3}
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Reservoir EngineeringPermeability

Average Permeability in Radial Systems

kavg=ka⋅ke⋅ln⁡(rerw)ka⋅ln⁡(rera)+ke⋅ln⁡(rarw)k_{avg} = \frac{k_a \cdot k_e \cdot \ln\left(\frac{r_e}{r_w}\right)}{k_a \cdot \ln\left(\frac{r_e}{r_a}\right) + k_e \cdot \ln\left(\frac{r_a}{r_w}\right)}
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Reservoir EngineeringPermeability

Binary Power-Average Effective Permeability

keff=[psskssm+(1−pss)kshm]1/mk_{eff}=\left[p_{ss}k_{ss}^m+(1-p_{ss})k_{sh}^m\right]^{1/m}
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Reservoir EngineeringPermeability

Gas Permeability from Core Plug Pressure-Squared Flow

k=2μQavgPavgLA(P12−P22)k = \frac{2\mu Q_{avg}P_{avg}L}{A(P_1^2-P_2^2)}
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Reservoir EngineeringPermeability

Geometric Mean Permeability from Log Average

kg=exp⁡(ln⁡k1+ln⁡k2+ln⁡k33)k_g=\exp\left(\frac{\ln k_1+\ln k_2+\ln k_3}{3}\right)
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Reservoir EngineeringPermeability

Jones-Owens Klinkenberg Slip Factor

b=12.639k∞−0.33b = 12.639 k_{\infty}^{-0.33}
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Reservoir EngineeringPermeability

Klinkenberg Apparent Gas Permeability

kg=kl(1+bp)k_g = k_l\left(1+\frac{b}{p}\right)
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Reservoir EngineeringPermeability

Kozeny Permeability from Porosity and Specific Surface Area

k=ϕkzSp2k=\frac{\phi}{k_zS_p^2}
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Reservoir EngineeringPermeability

Kozeny-Carman Permeability from Grain Diameter

k=Bϕ3d2τk=\frac{B\phi^3d^2}{\tau}
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Reservoir EngineeringPermeability

Lognormal Effective Permeability from Geometric Mean

keff=kgexp⁡[(12−1d)σln⁡k2]k_{eff}=k_g\exp\left[\left(\frac{1}{2}-\frac{1}{d}\right)\sigma_{\ln k}^2\right]
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Reservoir EngineeringPermeability

Modified Kozeny-Carman Permeability with Percolation Porosity

k=B(ϕ−ϕc)3(1+ϕc−ϕ)2d2k=B\frac{(\phi-\phi_c)^3}{(1+\phi_c-\phi)^2}d^2
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