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ASME B31.4 Liquid Pipeline Local Pressure

Calculate ASME B31.4 oil and liquid pipeline local stationary pressure from elevation for onshore and offshore pipelines.

For onshore pipelines external pressure is ignored. Use the Result Plot option to plot pressure versus elevation.

Reference : ANSI/ASME B31.4 : Pipeline Transportation Systems For Liquids And Slurries (2012)

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CALCULATOR : ASME B31.4 Two Phase Gas Liquid Density [FREE]   ±

Calculate ASME B31.4 oil pipeline fluid density for two phase gas liquid.

Calculate the density of single phase fluid (oil or water), single phase gas, or two phase gas and 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

  • 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
  • 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
  • Xm : Gas Mass Fraction
  • Xv : Gas Volume Fraction (At T P)
  • vg : Gas Mole Volume (At T P)
CALCULATOR : ASME B31.4 Three Phase Black Oil Density [FREE]   ±

Calculate ASME B31.4 oil pipeline fluid density for three phase gas, oil and water.

Calculate the density of single phase oil, single phase water, single phase gas, two phase oil and water, or three phase black oil (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

  • mvtype : Fluid Density Type
    • GORu : User Defined Gas Oil Ratio
    • WCu : User Defined Water Cut
    • ρu : User Defined Fluid Density
  • 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
  • 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 : ASME B31.4 Pipeline Local Pressure From Elevation (Onshore) [FREE]   ±

Calculate ASME B31.4 oil and liquid onshore pipeline stationary local internal pressure from elevation.

For onshore pipelines external pressure is ignored. Elevation is measured relative to an arbitrary datum (see figure). Mean sea level (MSL) is commonly used as a datum.

Tool Input

  • plitype : Internal Pressure Type
    • Priu : User Defined Reference Internal Pressure
    • Pliu : User Defined Local Internal Pressure
    • ρf : Internal Fluid Density
    • Zr : Reference Elevation
    • Zl : Local Elevation

Tool Output

  • ΔZlr : Local Elevation Relative To Reference Elevation
  • Pli : Internal Fluid Pressure
CALCULATOR : ASME B31.4 Pipeline Local Pressure From Elevation (Offshore) [FREE]   ±

Calculate ASME B31.4 oil and liquid offshore pipeline local stationary internal and external pressure from elevation.

For platform piping and the riser section above sea level the external pressure should be ignored (select the local external pressure = 0 option). Elevation is measured relative to an arbitrary datum (see figure). Mean sea level (MSL) is commonly used as a datum.

Tool Input

  • plitype : Internal Pressure Type
    • Priu : User Defined Reference Internal Pressure
    • Pliu : User Defined Local Internal Pressure
    • ρf : Internal Fluid Density
    • Zr : Reference Elevation
    • Zl : Local Elevation
  • pletype : External Pressure Type
    • Pleu : User Defined Local External Pressure
    • ρe : External Fluid Density
    • Zs : Surface Elevation

Tool Output

  • ΔPl : Delta Pressure Across Pipe Wall
  • ΔZlr : Local Elevation Relative To Reference Elevation
  • Ple : External Fluid Pressure
  • Pli : Internal Fluid Pressure
  • wd : Water Depth
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