Formula 4.59
Perforation penetration ratio (formation of interest/reference formation)
Input(s)
$c_{r}$: Compressive Strength of reference Formation (ksi)
$c$ : Compressive Strength of Formation of Interest (ksi)
Output(s)
$L_{p}$: Total Target Penetration in Formation of Interest (in.)
$L_{p r}$: Total Target Penetration in Reference Formation (in.)
Formula(s)
$$ \frac{L_{p}}{L_{p r}}=\exp \left[0.086\left(c_{r}-c .\right]\right. $$
Reference(s)
Bell, W. T., Sukup, R. A., \& Tariq, S. M. (1995). Perforating. Henry L. Doherty Memorial Fund of AIME, Society of Petroleum Engineers, Page: 51.