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LaTeX Math Block
anchork_CZ
alignmentleft
k_f = \frac{D_f^2}{72 \cdot \tau^2} \cdot \frac{(\phi_f -\phi_{f0})^3}f^3}{( 1 - \phi_f+\phi_{f0})^2}

where

LaTeX Math Inline
body\phi_f

fracture porosity

LaTeX Math Inline
body--uriencoded--\phi_%7Bf0%7D

fracture porositycut-off

LaTeX Math Inline
bodyd_f

proppant grain size

LaTeX Math Inline
body\tau_f

fracture  pore channel tortuosity

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