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.