Vertical Transient Flow Functions
Transient rate and productivity index before boundary effects appear.
3 functions
PO.IPR.VW.TF.Rate(J, Pi, Pwf)
Calculates transient-state production flow rate, [bbl/D].
PO.IPR.VW.TF.Rate.ByVogel(J, Pi, Pwf, Pb)
Calculates Vogel inflow performance for transient-state flow, [bbl/D].
PO.IPR.VW.TF.PI(time, K, h, Bl, Ul, porosity, Ct, Rw, S)
Calculates transient state productivity index for vertical well, [bbl/(D.psi)].