Pseudosteady State Flow Functions

PO.IPR.GW.D

Calculates Non-Darcy flow coefficient (D) for gas well turbulence effects, [D/mscf]. Used as input to GW.PSS.Rate.NonDarcy.

PO.IPR.GW.PSS.Rate

Calculates gas well flow rate for pseudosteady state condition using Darcy flow approximation, [mscf/D].

PO.IPR.GW.PSS.Rate.NonDarcy

Calculates gas well stabilized flow rate for pseudosteady state condition with Non-Darcy flow equation, [mscf/D].

PO.IPR.GW.PSS.Time

Calculates time to reach pseudosteady state (stabilized flow boundary) in gas well, [h].

Calculates pseudosteady state productivity index for horizontal well using Babu-Odeh method for a box-shaped, anisotropic reservoir, with a well placed parallel to X(box length)-direction, [STB/(d.psi)].

PO.IPR.HW.PSS.PI.ByBabuOdeh.Centered

Calculates pseudosteady state productivity index for horizontal well using Babu-Odeh method for a box-shaped, anisotropic reservoir, with a well centrally placed parallel to X(box length)-direction, [STB/(d.psi)].

PO.IPR.VW.Klins.d

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

PO.IPR.VW.PSS.AOF.ByFetkovich

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

PO.IPR.VW.PSS.PI

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

PO.IPR.VW.PSS.Rate

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

PO.IPR.VW.PSS.Rate.ByFetkovich

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

PO.IPR.VW.PSS.Rate.ByKlins

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

PO.IPR.VW.PSS.Rate.ByVogel

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

PO.IPR.VW.PSS.Time

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