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API RP 14E Fluid Velocity

Calculate API RP 14E fluid velocity and flowrate for single phase gas, single phase liquid, two phase gas liquid, and three phase gas, oil and water (black oil).

Flow rate can be calculated for mass flow rate, volume flow rate, mole flow rate and velocity. Gas density is calculated from temperature and pressure, and either specific gravity or molar mass. Liquid density can be calculated from specific gravity, degrees Baume, degrees Twaddell, or degrees API. Black oil is a three phase mixture of oil, water and gas. Water cut is measured relative to the total liquid volume (gas volume is ignored). Gas oil ratio (GOR) is measured relative to the oil volume at standard conditions (water volume is ignored).

Reference : API 14E Recommended Practice For Design and Installation of Offshore Production Platform Piping Systems

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CALCULATOR : API RP 14E Fluid Flow Rate And Velocity (Two Phase Gas Liquid) [FREE]   ±

Calculate API RP 14E fluid flow rate and velocity for two phase gas liquid.

Fluid density can be calculated for either single phase liquid, single phase gas, or two phase gas liquid. Gas oil ratio (GOR) is the ratio of gas moles over oil volume. Gas moles are commonly measured as gas volume at standard conditions (eg SCF or SCM).

Tool Input

  • schdtype : Pipe Schedule Type
  • diamtype : Pipe Diameter Type
    • ODu : User Defined Outside Diameter
    • IDu : User Defined Inside Diameter
  • wtntype : Wall Thickness Type
    • tnu : User Defined Wall Thickness
  • mvtype : Fluid Density Type
    • GORu : User Defined Gas Oil Ratio
    • Xmu : User Defined Gas Mass Fraction
    • Xvu : User Defined Gas Volume Fraction
    • ρu : User Defined Fluid Density
  • voltype : Fluid Flowrate Type
    • Qlu : User Defined Liquid Volume Flow Rate
    • Ngu : User Defined Gas Mole Flow Rate
    • Qfu : User Defined Total Fluid Volume Flow Rate
    • Mfu : User Defined Total Fluid Mass Flow Rate
    • Vfu : User Defined Fluid Velocity
  • ρl : Liquid Density
  • P : Fluid Pressure
  • T : Fluid Temperature
  • Z : Gas Compressibility Factor
  • SG : Gas Specific Gravity

Tool Output

  • ρf : Average Fluid Density
  • ρg : Gas Density (At T P)
  • GOR : Gas Oil Ratio
  • ID : Inside Diameter
  • Mf : Total Fluid Mass Flowrate
  • Mg : Gas Mass Flowrate
  • Ml : Liquid Mass Flowrate
  • Ng : Gas Mole Flowrate
  • Qf : Total Fluid Volume Flowrate
  • Qg : Gas Volume Flowrate (At T P )
  • Ql : Liquid Volume Flowrate
  • Vf : Average Fluid Velocity
  • Vg : Superficial Gas Velocity
  • Vl : Superficial Liquid Velocity
  • Xm : Gas Mass Fraction
  • Xv : Gas Volume Fraction (At T P)
  • vg : Gas Mole Volume (At T P)

CALCULATOR : API RP 14E Fluid Flow Rate And Velocity (Three Phase Gas Oil And Water) [PLUS]   ±

Calculate API RP 14E fluid flow rate and velocity for three phase gas oil and water (black oil).

Fluid density can be calculated for either three phase black oil density amd pipeline flow rate. Black oil is a three phase mixture of oil, water and gas. Water cut is measured relative to the total liquid volume (gas volume is ignored). Gas oil ratio (GOR) is measured relative to the oil volume at standard conditions (water volume is ignored).

Tool Input

  • schdtype : Pipe Schedule Type
  • diamtype : Pipe Diameter Type
    • ODu : User Defined Outside Diameter
    • IDu : User Defined Inside Diameter
  • wtntype : Wall Thickness Type
    • tnu : User Defined Wall Thickness
  • mvtype : Fluid Density Type
    • GORu : User Defined Gas Oil Ratio
    • WCu : User Defined Water Cut
    • ρu : User Defined Fluid Density
  • voltype : Fluid Volume Type
    • Qou : User Defined Oil Volume Flow Rate
    • Qlu : User Defined Liquid Volume Flow Rate
    • Ngu : User Defined Gas Mole Flow Rate
    • Qfu : User Defined Total Fluid Volume Flow Rate
    • Mfu : User Defined Total Fluid Mass Flow Rate
    • Vfu : User Defined Fluid Velocity
  • ρo : Oil Density
  • ρw : Water Density
  • P : Fluid Pressure
  • T : Fluid Temperature
  • Z : Gas Compressibility Factor
  • SG : Gas Specific Gravity

Tool Output

  • ρf : Average Fluid Density
  • ρg : Gas Density
  • ρl : Liquid Density
  • GOR : Gas Oil Ratio
  • ID : Inside Diameter
  • Mf : Total Fluid Mass Flowrate
  • Mg : Gas Mass Flowrate
  • Ml : Liquid Mass Flowrate
  • Mo : Oil Mass Flowrate
  • Mw : Water Mass Flowrate
  • Ng : Gas Mole Flowrate
  • Qf : Total Fluid Volume Flowrate
  • Qg : Gas Volume Flowrate
  • Ql : Liquid Volume Flowrate
  • Qo : Oil Volume Flowrate
  • Qw : Water Volume Flowrate
  • Vf : Average Fluid Velocity
  • Vg : Gas Superficial Velocity
  • Vl : Liquid Superficial Velocity
  • Vo : Oil Superficial Velocity
  • Vw : Water Superficial Velocity
  • WC : Water Cut
  • Xmg : Gas Mass Fraction
  • Xml : Liquid Mass Fraction
  • Xmo : Oil Mass Fraction
  • Xmw : Water Mass Fraction
  • Xvg : Gas Volume Fraction
  • Xvl : Liquid Volume Fraction
  • Xvo : Oil Volume Fraction
  • Xvw : Water Volume Fraction
  • vg : Gas Mole Volume (At T P)

CALCULATOR : API RP 14E Fluid Flow Rate And Velocity (Single Phase Liquid) [FREE]   ±

Calculate API RP 14E fluid flow rate and velocity for single phase.

Liquid density can be calculated from specific gravity, degrees Baume, degrees Twaddell, or degrees API. For liquids lighter than or equal to water the density can be defined as degrees API, or degrees Baume (Be-). For liquids heavier than water the density can be defined by degrees Baume (Be+), or degrees Twaddell.

Tool Input

  • schdtype : Pipe Schedule Type
  • diamtype : Pipe Diameter Type
    • ODu : User Defined Outside Diameter
    • IDu : User Defined Inside Diameter
  • wtntype : Wall Thickness Type
    • tnu : User Defined Wall Thickness
  • sgtype : Density Type
    • SGu : User Defined Specific Gravity
    • Be+u : User Defined Degrees Baume SG > 1
    • Be-u : User Defined Degrees Baume SG <= 1
    • Twu : User Defined Degrees Twaddell SG > 1
    • APIu : User Defined Degrees API SG <= 1
    • ρu : User Defined Liquid Density
  • voltype : Fluid Flowrate Type
    • Qfu : User Defined Volume Flow Rate
    • Mfu : User Defined Mass Flow Rate
    • Vfu : User Defined Fluid Velocity

Tool Output

  • ρ : Fluid Density
  • API : Degrees API SG ≤ 1
  • Be+ : Degrees Baume SG > 1
  • Be- : Degrees Baume SG ≤ 1
  • ID : Inside Diameter
  • Mf : Liquid Mass Flowrate
  • Qf : Liquid Volume Flowrate
  • SG : Specific Gravity
  • Tw : Degrees Twaddell SG > 1
  • Vf : Fluid Velocity
CALCULATOR : API RP 14E Fluid Flow Rate And Velocity (Single Phase Gas) [FREE]   ±

Calculate API RP 14E fluid flow rate and velocity for single phase gas.

Gas density can be calculated from either specific gravity or molar mass, and gas temperature and pressure. Gas molar mass is approximately equal to the molar mass of dry air times the gas specific gravity at standard conditions (for most gases the compressibility factor Z is approximately equal to 1 at standard conditions). The molar mass of dry air is taken as 28.964 kg/kg-mole. For gas mixtures, gas specific gravity is easier to measure than the molar mass.

Tool Input

  • schdtype : Pipe Schedule Type
  • diamtype : Pipe Diameter Type
    • ODu : User Defined Outside Diameter
    • IDu : User Defined Inside Diameter
  • wtntype : Wall Thickness Type
    • tnu : User Defined Wall Thickness
  • fluidtype : Gas Type
    • SGu : User Defined Gas Specific Gravity
  • voltype : Gas Flowrate Type
    • Qfu : User Defined Gas Volume Flow Rate
    • Mfu : User Defined Gas Mass Flow Rate
    • Ngu : User Defined Gas Mole Flow Rate
    • Vfu : User Defined Gas Velocity
  • P : Gas Pressure
  • T : Gas Temperature
  • Z : Gas Compressibility Factor

Tool Output

  • ρ : Gas Density
  • ID : Inside Diameter
  • M : Gas Molar Mass
  • Mf : Gas Mass Flowrate
  • Ng : Gas Mole Flowrate
  • Qf : Gas Volume Flowrate (At T P)
  • R : Gas Constant
  • SG : Gas Specific Gravity
  • Vf : Gas Velocity
  • vg : Gas Mole Volume (At T P)
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