Vertical Well Production Functions

Calculates Klins-Clark pressure-dependent exponent d, [dimensionless]. Klins & Clark (1993) correlation.

Calculates Fetkovich maximum flow rate (AOF) at Pwf = 0, [STB/d]. Fetkovich (1973) correlation.

Calculates pseudosteady state productivity index for vertical well, [bbl/(D.psi)].

Calculates pseudosteady state production flow rate, [bbl/D].

Calculates Fetkovich backpressure IPR flow rate for oil, [STB/d]. Fetkovich (1973) correlation.

Calculates Klins-Clark modified Vogel IPR flow rate for oil, [STB/d]. Klins & Clark (1993) correlation.

Calculates Vogel inflow performance for pseudosteady state flow, [bbl/D].

Calculates time to reach pseudosteady state for oil well with regular-shaped drainage area, [h].

Calculates steady state productivity index for vertical well, [bbl/(D.psi)].

Calculates steady state production flow rate, [bbl/D].

Calculates Vogel inflow performance for steady state flow, [bbl/D].

Calculates transient state productivity index for vertical well, [bbl/(D.psi)].

Calculates transient-state production flow rate, [bbl/D].

Calculates Vogel inflow performance for transient-state flow, [bbl/D].