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Permeability and Flow Equations

Browse 11 permeability and flow petroleum engineering equations with formulas, inputs, outputs, units, and sources.

Permeability and Flow equations 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

t_{D,bt} = \left(\frac{df_w}{dS_w}\right)_{shock}^{-1}

Reservoir EngineeringPermeability and Flow

Buckley-Leverett Saturation Front Velocity

v_S = \frac{u_t}{\phi}\frac{df_w}{dS_w}

Reservoir EngineeringPermeability and Flow

Calculation of Fractional Flow Curve

f_w = \frac{1}{1 + \frac{\mu_w \cdot k_{ro}}{k_{rw} \cdot \mu_o}}

Reservoir EngineeringPermeability and Flow

Corey Oil Relative Permeability

k_{ro} = k_{ro}^o(1-S_w^*)^{n_o}

Reservoir EngineeringPermeability and Flow

Corey Water Relative Permeability

k_{rw} = k_{rw}^o(S_w^*)^{n_w}

Reservoir EngineeringPermeability and Flow

Crossflow Index

CI = \frac{N_{pcf} - N_{pncf}}{N_{pu} - N_{pncf}}

Reservoir EngineeringPermeability and Flow

Normalized Saturation

S_{on}=\frac{1-S_w-S_{or}}{1-S_{wi}-S_{or}}

Reservoir EngineeringPermeability and Flow

Normalized Water Saturation for Relative Permeability

S_w^* = \frac{S_w-S_{wi}}{1-S_{wi}-S_{or}}

Reservoir EngineeringPermeability and Flow

Pseudosteady-State Radial Liquid Flow Rate

Q=\frac{0.00708 k h (P_i-P_{wf})}{B \mu [\ln(r_e/r_w)-0.75]}

Reservoir EngineeringPermeability and Flow

Relative Permeability from Effective Permeability

k_r = \frac{k_{eff}}{k}

Reservoir EngineeringPermeability and Flow

Torcaso-Wyllie Relative Permeability Ratio Prediction

k_{og}=k_{rg}\frac{(1-S)^2(1-S^2)}{S^4}