Pore growth function (acidizing)

Input(s)

rave r_{\text {ave }} : Average Wall Reaction Rate taken over the entire Reactive Surface Area (mol/cm2 s)\left(\mathrm{mol} / \mathrm{cm}^{2} \mathrm{~s}\right)

β\beta : Acid gravimetric dissolving power (mass rock/mass acid)

ρma\rho_{m a}: Formation Matrix Density (g/cm3)\left(\mathrm{g} / \mathrm{cm}^{3}\right)

Γ\Gamma: Perimeter of the Pore (μm)(\mu \mathrm{m})

A: Cross-sectional Area of Pore (cm2)\left(\mathrm{cm}^{2}\right)

ll : Length of Pore (μm)(\mu \mathrm{m})

t\mathrm{t}: time (s)(\mathrm{s})

Output(s)

ψ\psi: Pore Growth Function (cm2/s)\left(\mathrm{cm}^{2} / \mathrm{s}\right)

Formula(s)

ψ=raveβΓρma\psi=\frac{r_{a v e} \beta \Gamma}{\rho_{m a}^{\prime}}

or

ρmaldAdt=raveβΓl\rho_{m a} l \frac{d A}{d t}=r_{a v e} \beta \Gamma l

Reference(s)

Williams, B. B., Gidley, J. L., & Schechter, R. S. (1979). Acidizing fundamentals. Henry L. Doherty Memorial Fund of AIME, Society of Petroleum Engineers of AIME, Page: 69.

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