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Permeability and Flow Calculators

Use 11 permeability and flow petroleum engineering calculators with formulas, inputs, outputs, units, and source references.

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

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Reservoir EngineeringPermeability and Flow

Buckley-Leverett Breakthrough Pore Volumes

tD,bt=(dfwdSw)shock−1t_{D,bt} = \left(\frac{df_w}{dS_w}\right)_{shock}^{-1}
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Reservoir EngineeringPermeability and Flow

Buckley-Leverett Saturation Front Velocity

vS=utϕdfwdSwv_S = \frac{u_t}{\phi}\frac{df_w}{dS_w}
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Reservoir EngineeringPermeability and Flow

Calculation of Fractional Flow Curve

fw=11+μw⋅krokrw⋅μof_w = \frac{1}{1 + \frac{\mu_w \cdot k_{ro}}{k_{rw} \cdot \mu_o}}
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Reservoir EngineeringPermeability and Flow

Corey Oil Relative Permeability

kro=kroo(1−Sw∗)nok_{ro} = k_{ro}^o(1-S_w^*)^{n_o}
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Reservoir EngineeringPermeability and Flow

Corey Water Relative Permeability

krw=krwo(Sw∗)nwk_{rw} = k_{rw}^o(S_w^*)^{n_w}
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Reservoir EngineeringPermeability and Flow

Crossflow Index

CI=Npcf−NpncfNpu−NpncfCI = \frac{N_{pcf} - N_{pncf}}{N_{pu} - N_{pncf}}
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Reservoir EngineeringPermeability and Flow

Normalized Saturation

Son=1−Sw−Sor1−Swi−SorS_{on}=\frac{1-S_w-S_{or}}{1-S_{wi}-S_{or}}
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Reservoir EngineeringPermeability and Flow

Normalized Water Saturation for Relative Permeability

Sw∗=Sw−Swi1−Swi−SorS_w^* = \frac{S_w-S_{wi}}{1-S_{wi}-S_{or}}
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Reservoir EngineeringPermeability and Flow

Pseudosteady-State Radial Liquid Flow Rate

Q=0.00708kh(Pi−Pwf)Bμ[ln⁡(re/rw)−0.75]Q=\frac{0.00708 k h (P_i-P_{wf})}{B \mu [\ln(r_e/r_w)-0.75]}
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Reservoir EngineeringPermeability and Flow

Relative Permeability from Effective Permeability

kr=keffkk_r = \frac{k_{eff}}{k}
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Reservoir EngineeringPermeability and Flow

Torcaso-Wyllie Relative Permeability Ratio Prediction

kog=krg(1−S)2(1−S2)S4k_{og}=k_{rg}\frac{(1-S)^2(1-S^2)}{S^4}
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