Formula 4.28
Filter cake on the fracture (acidizing)
Input(s)
$C_{w}$: Fluid Loss Coefficient, $\left(\mathrm{m} / \mathrm{s}^{1 / 2}\right)$
$\sqrt{t}$ : Time root $\left(\mathrm{s}^{1 / 2}\right)$
Output(s)
$v_{N}$: Fluid Loss Velocity $(\mathrm{m} / \mathrm{s})$
Formula(s)
$$ v_{N}=\frac{C_{w}}{\sqrt{t}} $$
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: 41.