Pseudo-skin factor due to partial penetration (Odeh correlation)

Input(s)

$h_{1}$: Distance from payzone top to top of open interval (ft)

$h_{p}$ : Perforation interval (ft)

$\mathrm{h}$ : Total pay thickness $(\mathrm{ft})$

$r_{w}$ : Wellbore Dia (ft)

$k_{v}$ : Horizontal Permeability $(\mathrm{mD})$

$k_{h}$: Vertical Permeability $(\mathrm{mD})$

Output(s)

$z_{m}$: Well Perforation Distance $(\mathrm{ft})$

$h_{d}$ : Dimensionless Payzone Thickness (dimensionless)

b: Penetration Ratio (dimensionless)

$r_{w c}$ : Effective Wellbore dia (ft)

$s_{p}$ : Skin due to partial penetration (dimensionless)

Formula(s)

Reference(s)

Horizontal Well Technology, Joshi, Page: 495.