Fluid Properties Functions
Black-oil correlations and equation-of-state models for oil, gas and water properties.
91 functions
PO.PVT.Pb.ByStanding
Calculates oil bubble point pressure using Standing (1947) correlation, [psi].
PO.PVT.Pb.ByVasquezBeggs
Calculates oil bubble point pressure using Vasquez and Beggs (1980) correlation, [psi].
PO.PVT.Pb.ByGlaso
Calculates oil bubble point pressure using Glaso (1980) correlation, [psi].
PO.PVT.Pb.ByAlMarhoun
Calculates oil bubble point pressure using Al-Marhoun (1988) correlation, [psi].
PO.PVT.Pb.ByPetroskyFarshad
Calculates oil bubble point pressure using Petrosky and Farshad (1990) correlation, [psi].
PO.PVT.Pb.ByDoklaOsman
Calculates oil bubble point pressure using Dokla and Osman (1992) correlation, [psi].
PO.PVT.Pb.ByDindorukChristman
Calculates oil bubble point pressure using Dindoruk and Christman (2001) correlation, [psi].
PO.PVT.Bo.UnSat.ByDefinition
Calculates oil formation volume factor for undersaturated oil, P > Pb, [bbl/STB].
PO.PVT.Bo.Sat.ByStanding
Calculates oil formation volume factor using Standing (1947) correlation, P <= Pb, [bbl/STB].
PO.PVT.Bo.Sat.ByVasquezBeggs
Calculates oil formation volume factor using Vasquez and Beggs (1980) correlation, P <= Pb, [bbl/STB].
PO.PVT.Bo.Sat.ByGlaso
Calculates oil formation volume factor using Glaso (1980) correlation, P <= Pb, [bbl/STB].
PO.PVT.Bo.Sat.ByAlMarhoun
Calculates oil formation volume factor using Al-Marhoun (1988) correlation, P <= Pb, [bbl/STB].
PO.PVT.Bo.Sat.ByPetrosky
Calculates oil formation volume factor using Petrosky (1990) correlation, P <= Pb, [bbl/STB].
PO.PVT.Bo.Sat.ByDindorukChristman
Calculates oil formation volume factor using Dindoruk and Christman (2001) correlation, P <= Pb, [bbl/STB].
PO.PVT.Rs.ByStanding
Calculates solution gas-oil ratio using Standing correlation (1981), P <= Pb, [scf/STB].
PO.PVT.Rs.ByVasquezBeggs
Calculates solution gas-oil ratio using Vasquez and Beggs (1980) correlation, P <= Pb, [scf/STB].
PO.PVT.Rs.ByGlaso
Calculates solution gas-oil ratio using Glaso (1980) correlation, P <= Pb, [scf/STB].
PO.PVT.Rs.ByAlMarhoun
Calculates solution gas-oil ratio using Al-Marhoun (1988) correlation, P <= Pb, [scf/STB].
PO.PVT.Rs.ByPetroskyFarshad
Calculates solution gas-oil ratio using Petrosky and Farshad (1993) correlation, P <= Pb, [scf/STB].
PO.PVT.Rs.ByDindorukChristman
Calculates solution gas-oil ratio using Dindoruk and Christman (2001) correlation, P <= Pb, [scf/STB].
PO.PVT.Co.UnSat.ByVasquezBeggs
Calculates oil compressibility using Vasquez and Beggs (1980) correlation, P > Pb, [1/psi].
PO.PVT.Co.Sat.ByVillenaLanzi
Calculates oil compressibility using Villena-Lanzi (1985) correlation, P <= Pb, [1/psi].
PO.PVT.Uo.Dead.ByEgbogah
Calculates dead oil viscosity using Egbogah (1983) correlation, [cP].
PO.PVT.Uo.Dead.ByBeal
Calculates dead oil viscosity using Beal (1946) correlation. Standing's curve fit of Beal's graphical correlation. Best performer per Fotias (2022), [cP].
PO.PVT.Uo.Dead.ByGlaso
Calculates dead oil viscosity using Glaso (1980) correlation. Developed for North Sea crude oils, [cP].
PO.PVT.Uo.Sat.ByBeggsRobinson
Calculates oil viscosity with solution gas using Beggs and Robinson (1975) correlation, P <= Pb, [cP].
PO.PVT.Uo.Sat.ByChewConnally
Calculates oil viscosity with solution gas using Chew and Connally (1959) correlation, P <= Pb, [cP].
PO.PVT.Uo.UnSat.ByVasquezBeggs
Calculates oil viscosity for undersaturated conditions using Vasquez and Beggs (1980) correlation, P > Pb, [cP].
PO.PVT.Uo.UnSat.ByKouzel
Calculates oil viscosity for undersaturated conditions using Kouzel (1965) correlation, P > Pb. Exponential model with good performance across wide viscosity ranges, [cP].
PO.PVT.SG.Oil.ByDefinition
Calculates oil specific gravity from oil density, [dimensionless].
PO.PVT.SG.Oil.FromAPI
Converts API gravity to oil specific gravity, [dimensionless].
PO.PVT.API.FromSGoil
Converts oil specific gravity to API gravity, [API].
PO.PVT.Bg.ByDefinition
Calculates gas formation volume factor, [rcf/scf].
PO.PVT.Ug.ByLGE
Calculates gas viscosity using Lee, Gonzales and Eakin (1966) correlation, [cP].
PO.PVT.Cg.ByDefinition
Calculates gas compressibility, [1/psi].
PO.PVT.Rho.Gas.ByDefinition
Calculates gas density, [g/cc].
PO.PVT.Z.ByBrillBeggs
Calculates gas compressibility factor (Z) using Brill and Beggs (1974) correlation, [dimensionless].
PO.PVT.Z.ByDAK
Calculates gas compressibility factor (Z) using Dranchuk and Abou-Kassem (1975) equation of state, [dimensionless].
PO.PVT.Tpc.BySutton
Calculates pseudo-critical temperature of hydrocarbon gas using Sutton (1985) correlation, [degR].
PO.PVT.Tpc.ByStanding
Calculates pseudo-critical temperature of hydrocarbon gas using Standing correlation, [degR].
PO.PVT.Tpc.BySutton.Sour
Calculates pseudo-critical temperature of sour gas using Sutton correlation with Wichert-Aziz correction, [degR].
PO.PVT.Tpc.ByStanding.Sour
Calculates pseudo-critical temperature of sour gas using Standing correlation with Wichert-Aziz correction, [degR].
PO.PVT.Ppc.BySutton
Calculates pseudo-critical pressure of hydrocarbon gas using Sutton (1985) correlation, [psi].
PO.PVT.Ppc.ByStanding
Calculates pseudo-critical pressure of hydrocarbon gas using Standing correlation, [psi].
PO.PVT.Ppc.BySutton.Sour
Calculates pseudo-critical pressure of sour gas using Sutton correlation with Wichert-Aziz correction, [psi].
PO.PVT.Ppc.ByStanding.Sour
Calculates pseudo-critical pressure of sour gas using Standing correlation with Wichert-Aziz correction, [psi].
PO.PVT.SG.Gas.ByDefinition
Calculates gas specific gravity from molecular weight, [dimensionless].
PO.PVT.Ma.Air.Stn
Molecular weight of air at standard conditions, [g/mol].
PO.PVT.Bw.ByMcCain
Calculates water formation volume factor using McCain correlation, [bbl/STB].
PO.PVT.Rho.Wat.Stn
Water density at standard conditions, [lb/ft3].
PO.PVT.Rsw.Pure.ByMcCain
Calculates solution gas-water ratio for pure water using McCain correlation, [scf/STB].
PO.PVT.Rsw.ByMcCain
Calculates solution gas-water ratio for reservoir water using McCain correlation, [scf/STB].
PO.PVT.Cw.UnSat.ByOsif
Calculates water compressibility for undersaturated conditions using Osif correlation, P >= Pb, [1/psi].
PO.PVT.Cw.Sat.ByMcCain
Calculates water compressibility for saturated conditions using McCain correlation, P <= Pb, [1/psi].
PO.PVT.Uw.1Atm.ByMcCain
Calculates water viscosity at atmospheric pressure and reservoir temperature using McCain correlation, [cP].
PO.PVT.Uw.ByMcCain
Calculates water viscosity using McCain correlation, [cP].
PO.PVT.Salinity.Gl.FromPct
Converts water salinity from percent by weight to grams NaCl per liter, [g NaCl/l].
PO.PVT.Salinity.Pct.FromGl
Converts water salinity from grams NaCl per liter to percent by weight, [% by weight].
PO.PVT.IFT.GasOil.ByBakerSwerdloff
Calculates interfacial (surface) tension for live oil using Baker and Swerdloff (1955) correlation, [dynes/cm].
PO.PVT.IFT.GasOil.ByAbdulMajeed
Calculates interfacial (surface) tension for live oil using Abdul-Majeed (2000) correlation, [dynes/cm].
PO.EoS.Component.Props
Returns component properties [Tc, Pc, omega, Mw] as a row array from the database. Spills horizontally into 4 cells.
PO.EoS.SCN.Props
Returns Katz-Firoozabadi SCN properties [Tc, Pc, omega, Mw] as a row array. Carbon number range: 6-45.
PO.EoS.Mixture.Mw
Calculates mixture molecular weight from mole fractions and property table, [kg/mol].
PO.EoS.Component.List
Returns a list of all available component names in the database.
PO.EoS.Component.Exists
Checks if a component exists in the database. Returns TRUE or FALSE.
PO.EoS.Kij.ChuehPrausnitz
Estimates binary interaction parameter kij from critical volumes using Chueh-Prausnitz correlation, [-].
PO.EoS.Kij.Matrix
Generates N×N binary interaction parameter matrix using correlation. Methods: 'Nikos' (PR, T-dependent), 'Elliot-Daubert' (SRK), 'Chueh-Prausnitz'. Returns N×N array.
PO.EoS.Flash.PR
PT Flash calculation using Peng-Robinson EoS. Returns V (vapor fraction), L (liquid fraction), x (liquid composition), y (vapor composition), or K (K-values) based on output parameter.
PO.EoS.Flash.SRK
PT Flash calculation using SRK EoS. Returns V (vapor fraction), L (liquid fraction), x (liquid composition), y (vapor composition), or K (K-values) based on output parameter.
PO.EoS.Ki.PR
Calculates K-values (equilibrium ratios Ki = φL/φV) using Peng-Robinson EoS, [-]. Returns array.
PO.EoS.Ki.SRK
Calculates K-values (equilibrium ratios Ki = φL/φV) using SRK EoS, [-]. Returns array.
PO.EoS.Z.PR
Calculates compressibility factor using Peng-Robinson EoS, [-]. Returns Z for specified phase.
PO.EoS.Z.SRK
Calculates compressibility factor using SRK EoS, [-]. Returns Z for specified phase.
PO.EoS.Rho.PR
Calculates density using Peng-Robinson EoS, [kg/m³].
PO.EoS.Rho.SRK
Calculates density using SRK EoS, [kg/m³].
PO.EoS.Vm.PR
Calculates molar volume using Peng-Robinson EoS, [m³/mol].
PO.EoS.Vm.SRK
Calculates molar volume using SRK EoS, [m³/mol].
PO.EoS.Phi.PR
Calculates fugacity coefficients for all components using Peng-Robinson EoS, [-]. Returns array.
PO.EoS.Phi.SRK
Calculates fugacity coefficients for all components using SRK EoS, [-]. Returns array.
PO.EoS.Fug.PR
Calculates fugacity for all components using Peng-Robinson EoS, [Pa]. Returns array.
PO.EoS.Fug.SRK
Calculates fugacity for all components using SRK EoS, [Pa]. Returns array.
PO.EoS.Pb.PR
Calculates bubble point pressure using Peng-Robinson EoS, [Pa].
PO.EoS.Pb.SRK
Calculates bubble point pressure using SRK EoS, [Pa].
PO.EoS.Pdew.PR
Calculates dew point pressure using Peng-Robinson EoS, [Pa].
PO.EoS.Pdew.SRK
Calculates dew point pressure using SRK EoS, [Pa].
PO.EoS.Tb.PR
Calculates bubble point temperature using Peng-Robinson EoS, [K].
PO.EoS.Tb.SRK
Calculates bubble point temperature using SRK EoS, [K].
PO.EoS.Tdew.PR
Calculates dew point temperature using Peng-Robinson EoS, [K].
PO.EoS.Tdew.SRK
Calculates dew point temperature using SRK EoS, [K].
PO.EoS.Envelope.PR
Phase envelope using Peng-Robinson EoS. Output: 'bubble_T', 'bubble_P', 'dew_T', 'dew_P' (arrays), or 'cricondenbar_P/T', 'cricondentherm_P/T', 'critical_P/T' (scalars).
PO.EoS.Envelope.SRK
Phase envelope using SRK EoS. Output: 'bubble_T', 'bubble_P', 'dew_T', 'dew_P' (arrays), or 'cricondenbar_P/T', 'cricondentherm_P/T', 'critical_P/T' (scalars).