Recommended underbalanced environment for perforation

Input(s)

$k$: Formation Permeability $(\mathrm{mD})$

Output(s)

$p_{u}$: Underbalance Pressure $(\mathrm{psi})$

Formula(s)

$$ \log _{10} p_{u}=3.46055-0.3812 \log _{10} k $$

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: 74.