Class TBPfractionModel.StandingModel

java.lang.Object

neqsim.thermo.characterization.TBPfractionModel.TBPBaseModel

neqsim.thermo.characterization.TBPfractionModel.StandingModel

All Implemented Interfaces:

Serializable, Cloneable, TBPModelInterface

Enclosing class:

TBPfractionModel

public class TBPfractionModel.StandingModel
extends TBPfractionModel.TBPBaseModel

Standing (1977) property estimation method.

This implementation uses Riazi-Daubert style correlations for robust critical property estimation. While named after Standing's pioneering reservoir engineering work, the actual correlations follow the Riazi-Daubert exponential-power law form for better numerical stability and wider applicability.

Key Correlations:

Critical Temperature:

T_c = (5/9) × 554.4 × exp(-1.3478×10^-4·M - 0.61641·SG) × M^0.2998 × SG^1.0555

Critical Pressure:

P_c = 0.068947 × 4.5203×10⁴ × exp(-1.8078×10^-3·M - 0.3084·SG) × M^-0.8063 × SG^1.6015

Recommended Use Cases:

• Reservoir engineering calculations
• Quick property estimates
• Black oil PVT characterization
• When consistency with reservoir simulation tools is needed

Acentric Factor:

Uses the Kesler-Lee correlation for acentric factor estimation, which provides good results across a wide range of petroleum fractions. The correlation switches between two forms based on reduced boiling point (T_br = T_b/T_c):

• T_br < 0.8: Vapor pressure correlation form
• T_br ≥ 0.8: Watson K-factor based form

Reference: Standing, M.B. (1977). "Volumetric and Phase Behavior of Oil Field Hydrocarbon Systems." SPE, Dallas.

Version:

$Id: $Id

Author:

ESOL

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private static final long	serialVersionUID	Serialization version UID.

Fields inherited from class TBPfractionModel.TBPBaseModel

calcm

Constructor Summary

Constructors

Constructor	Description
StandingModel()

Method Summary

Modifier and Type	Method	Description
double	calcAcentricFactor(double molarMass, double density)	calcAcentricFactor.
double	calcPC(double molarMass, double density)	calcPC.
double	calcRacketZ(SystemInterface thermoSystem, double molarMass, double density)	calcRacketZ.
double	calcTC(double molarMass, double density)	calcTC.

Methods inherited from class TBPfractionModel.TBPBaseModel

calcAcentricFactorKeslerLee, calcCriticalViscosity, calcCriticalVolume, calcm, calcParachorParameter, calcTB, calcWatsonCharacterizationFactor, getBoilingPoint, getName, isCalcm, setBoilingPoint

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

serialVersionUID

private static final long serialVersionUID

Serialization version UID.

See Also:

• Constant Field Values

Constructor Details

StandingModel

public StandingModel()

Method Details

calcTC

public double calcTC(double molarMass,
 double density)

calcTC.

Parameters:

molarMass - a double

density - a double

Returns:

a double

calcPC

public double calcPC(double molarMass,
 double density)

calcPC.

Parameters:

molarMass - a double

density - a double

Returns:

a double

calcAcentricFactor

public double calcAcentricFactor(double molarMass,
 double density)

calcAcentricFactor.

Specified by:

calcAcentricFactor in interface TBPModelInterface

Overrides:

calcAcentricFactor in class TBPfractionModel.TBPBaseModel

Parameters:

molarMass - a double

density - a double

Returns:

a double

calcRacketZ

public double calcRacketZ(SystemInterface thermoSystem,
 double molarMass,
 double density)

calcRacketZ.

Specified by:

calcRacketZ in interface TBPModelInterface

Overrides:

calcRacketZ in class TBPfractionModel.TBPBaseModel

Parameters:

thermoSystem - a SystemInterface object

molarMass - a double

density - a double

Returns:

a double