Bottomhole flowing pressure during infinite-acting pseudoradial flow

Input(s)

$p_{i}$: Initial Reservoir Pressure (psi)

$Q_{o}$: Well Flow Rate (STB/day)

$B_{o}$: Oil Formation Volume Factor (bbl/STB)

$\mu_{o}$: Oil Viscosity $(\mathrm{cP})$

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

$\mathrm{h}$: Thickness $(\mathrm{ft})$

$\mathrm{t}$: Flowing Time (h)

$\emptyset$: Porosity (fraction)

$c_{t}$: Total Compressibility (1/psi)

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

$\mathrm{S}$: Skin (dimensionless)

Output(s)

$P_{w f}$: Wellbore Flowing Pressure (psi)

Formula(s)

Reference(s)

Ahmed, T., McKinney, P.D. 2005. Advanced Reservoir Engineering, Gulf Publishing of Elsevier, Chapter: 1, Page: 98.