Inflow Performance LAMBDAs
Inflow rates, productivity index and drainage geometry for vertical, horizontal and gas wells.
30 lambdas
PO.IPR.VW.SS.Rate.SI(J, Pe, Pwf)
Calculates steady state production flow rate, [m3/d] (SI units).
PO.IPR.VW.SS.Rate.ByVogel.SI(J, Pe, Pwf, Pb)
Calculates Vogel inflow performance for steady state flow, [m3/d] (SI units).
PO.IPR.VW.SS.PI.SI(K, h, Bl, Ul, Re, Rw, S)
Calculates steady state productivity index for vertical well, [m3/(d.kPa)] (SI units).
PO.IPR.VW.PSS.Rate.SI(J, P_average, Pwf)
Calculates pseudosteady state production flow rate, [m3/d] (SI units).
PO.IPR.VW.PSS.Rate.ByVogel.SI(J, P_average, Pwf, Pb)
Calculates Vogel inflow performance for pseudosteady state flow, [m3/d] (SI units).
PO.IPR.VW.PSS.Rate.ByFetkovich.SI(C, n, Pres, Pwf)
Calculates Fetkovich backpressure IPR flow rate for oil, [m3/d]. Fetkovich (1973) correlation (SI units).
PO.IPR.VW.PSS.AOF.ByFetkovich.SI(C, n, Pres)
Calculates Fetkovich maximum flow rate (AOF) at Pwf = 0, [m3/d]. Fetkovich (1973) correlation (SI units).
PO.IPR.VW.PSS.Rate.ByKlins.SI(QoMax, Pres, Pb, Pwf)
Calculates Klins-Clark modified Vogel IPR flow rate for oil, [m3/d]. Klins & Clark (1993) correlation (SI units).
PO.IPR.VW.Klins.d.SI(Pres, Pb)
Calculates Klins-Clark pressure-dependent exponent d, [dimensionless]. Klins & Clark (1993) correlation (SI units).
PO.IPR.VW.PSS.Time.SI(Re, K, Ul, porosity, Ct)
Calculates time to reach pseudosteady state for oil well with regular-shaped drainage area, [h] (SI units).
PO.IPR.VW.PSS.PI.SI(K, h, Bl, Ul, Re, Rw, S)
Calculates pseudosteady state productivity index for vertical well, [m3/(d.kPa)] (SI units).
PO.IPR.VW.TF.Rate.SI(J, Pi, Pwf)
Calculates transient-state production flow rate, [m3/d] (SI units).
PO.IPR.VW.TF.Rate.ByVogel.SI(J, Pi, Pwf, Pb)
Calculates Vogel inflow performance for transient-state flow, [m3/d] (SI units).
PO.IPR.VW.TF.PI.SI(time, K, h, Bl, Ul, porosity, Ct, Rw, S)
Calculates transient state productivity index for vertical well, [m3/(d.kPa)] (SI units).
PO.IPR.HW.SS.PI.ByBorisov.SI(L, Rw, Re, h, K, Bl, Ul)
Calculates steady state productivity index for horizontal well using Borisov method (isotropic reservoir), [m3/(d.kPa)] (SI units).
PO.IPR.HW.SS.PI.ByGRJ.SI(L, Rw, Re, h, Kz, Kxy, Bl, Ul)
Calculates steady state productivity index for horizontal well using Giger-Reiss-Jourdan method (anisotropic reservoir), [m3/(d.kPa)] (SI units).
PO.IPR.HW.SS.PI.ByJoshi.SI(L, Rw, Re, h, Kz, Kxy, Bl, Ul)
Calculates steady state productivity index for horizontal well using Joshi method (anisotropic reservoir), [m3/(d.kPa)] (SI units).
PO.IPR.HW.SS.PI.ByRenardDupuy.SI(L, Rw, Re, h, Kz, Kxy, Bl, Ul)
Calculates steady state productivity index for horizontal well using Renard-Dupuy method (anisotropic reservoir), [m3/(d.kPa)] (SI units).
PO.IPR.HW.SS.PI.ByEconomides.SI(L, Rw, Xe, Ye, h, Kx, Ky, Kz, Bl, Ul, Zw)
Calculates steady state productivity index for horizontal well using Economides-Brand-Frick model (anisotropic reservoir, rectangular drainage), [m3/(d.kPa)]. Economides et al. (1994) correlation (SI units).
PO.IPR.HW.SS.PI.ByEconomides.Centered.SI(L, Rw, Xe, Ye, h, Kx, Ky, Kz, Bl, Ul)
Calculates steady state productivity index for horizontal well using Economides model for centered well (Zw = h/2), [m3/(d.kPa)]. Economides et al. (1994) correlation (SI units).
PO.IPR.HW.PSS.PI.ByBabuOdeh.SI(size_x, size_y, size_z, Kx, Ky, Kz, L, Rw, Bl, Ul, S, x1, y0, z0)
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, [m3/(d.kPa)] (SI units).
PO.IPR.HW.PSS.PI.ByBabuOdeh.Centered.SI(size_x, size_y, size_z, Kx, Ky, Kz, L, Rw, Bl, Ul, S)
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, [m3/(d.kPa)] (SI units).
PO.IPR.GW.PSS.Time.SI(Re, Rw, K, porosity, Ct, Ug)
Calculates time to reach pseudosteady state (stabilized flow boundary) in gas well, [h] (SI units).
PO.IPR.GW.PSS.Rate.SI(K, h, P_average, Pwf, Z, Ug, Re, Rw, S, T)
Calculates gas well flow rate for pseudosteady state condition using Darcy flow approximation, [sm3/d] (SI units).
PO.IPR.GW.PSS.Rate.NonDarcy.SI(K, h, P_average, Pwf, Z, Ug, Re, Rw, S, T, D)
Calculates gas well stabilized flow rate for pseudosteady state condition with Non-Darcy flow equation, [sm3/d] (SI units).
PO.IPR.GW.D.SI(Rw, h, h_perf, SG_gas, Ug, K)
Calculates Non-Darcy flow coefficient (D) for gas well turbulence effects, [1/(sm3/d)]. Used as input to GW.PSS.Rate.NonDarcy (SI units).
PO.IPR.Re.SI(A)
Calculates effective drainage radius, [m] (SI units).
PO.IPR.HW.DrainArea.Rect.SI(L, b)
Calculates horizontal well drainage area using two half-circles at ends plus rectangle (Joshi), [m2] (SI units).
PO.IPR.HW.DrainArea.Ellipse.SI(L, b)
Calculates horizontal well drainage area using ellipse geometry (Joshi), [m2] (SI units).
PO.IPR.Rwa.SI(Rw, S)
Calculates effective wellbore radius, [m] (SI units).