Perforation skin factor
Input(s)
\(s_{H}\) : Horizontal or Plane Flow Skin (dimensionless)
\(s_{v}\) : Vertical or Converging Flow Skin (dimensionless)
\(s_{w b}\) : Skin resulted by the Wellbore Effect (dimensionless)
\(s_{p d}\) : Skin caused by the Damaged Zone around Perforation (dimensionless)
Output(s)
\(s_{p}\): Perforation Skin (dimensionless)
Formula(s)
\[
s_{p}=s_{H}+s_{v}+s_{w b}+s_{p d}
\]
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: 65.