Soil Pipe Friction

Calculate soil and pipe friction load and equivalent friction factor for buried pipelines in either cohesive or non cohesive soil.

The equivalent friction factor is equal to the axial friction load divided by the pipe weight.

Change Module :

Soil Pipe Cover Weight And Uplift Resistance Calculation Module
Soil Pipe Thermal Resistance Calculation Module
Soil Weight And Density Calculation Module
All

Related Modules :

Soil Properties : Density Uplift Coefficient Shear Strength And Friction Factor Data Module
More Soil Friction Modules

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Links : ±

CALCULATOR : Soil And Pipe Axial Friction Load (Multi Layer Pipe) [FREE] ±

Calculate soil and pipe axial friction unit load and equivalent axial friction factor for multi layer pipelines.

The axial friction unit load (friction load per length) can be calculated for buried and unburied pipelines, and for either cohesive or non cohesive soil. The equivalent friction factor is equal to the axial friction load divided by the pipe weight.

Tool Input

schdtype : Line Pipe Schedule Type
diamtype : Line Pipe Diameter Type
- ODu : User Defined Outside Diameter
- IDu : User Defined Inside Diameter
wtntype : Line Pipe Wall Thickness Type
- tnu : User Defined Wall Thickness
wltype : Pipe Weight Type
sectype : Cross Section Type
- OODu : User Defined Outer Diameter Including Coatings
- Rpu : User Defined Pipe Total Weight Per Length
nfltype : Pipe Soil Axial Friction Type
- Fu : User Defined Soil Friction Force Per Unit Length
- μeu : User Defined Equivalent Friction Factor
WTi : Pipe Liner Wall Thickness
ρi : Pipe And Liner Density
WTo : Pipe Coating Wall Thickness
ρo : Pipe Coating Density
ρf : Contents Fluid Density
ρb : Displaced Fluid Density
h : Soil Cover Height To Top Of Pipe
Su : Soil Undrained Shear Stress
ws : Soil In Place Specific Weight
Ko : Soil Earth Pressure Factor
μs : Pipe Soil Axial Friction Factor

Tool Output

μe : Equivalent Pipe Soil Axial Friction Factor
F : Pipe Soil Axial Friction Per Unit Length
IID : Pipe Inner Diameter Including Liner
OD : Line Pipe Diameter
OD/tn : Line Pipe Diameter Over Wall Thickness Ratio
OOD : Pipe Outer Diameter Including Coatings
W : Pipe Total Weight Per Length Including Contents and Buoyancy
mb : Displaced Fluid Mass Per Length
mc : Contents Fluid Mass Per Length
mp : Pipe Mass Per Length Including Liner And Coating
tn : Line Pipe Thickness

CALCULATOR : Soil Friction Angle Friction Factor And Earth Pressure Coefficient [FREE] ±

Calculate soil friction angle, friction factor and earth pressure coefficient.

The friction factor is used for the Schaminee soil and pipe cover weight and upload resistance calculation. The earth pressure coefficient is used for the soil and pipe axial friction calculation.

Tool Input

fstype : Soil Friction Type
- ϕu : User Defined Soil Friction Angle
- fsu : User Defined Soil Friction Factor
- Kou : User Defined Coefficient Of Earth Pressure

Tool Output

ϕ : Soil Friction Angle
Ko : Soil Earth Pressure Coefficient
fs : Soil Friction Factor

CALCULATOR : Soil And Pipe Two Phase Gas Liquid Density [FREE] ±

Calculate two phase gas liquid density from gas oil ratio.

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). Density can be calculated for single phase liquid (oil or water), single phase gas, and two phase gas liquid.

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 : Soil And Pipe Three Phase Black Oil Density [FREE] ±

Calculate three phase black oil density from water cut and gas oil ratio.

Water cut is the ratio of water volume to total liquid volume (gas volume is ignored). Gas oil ratio (GOR) is the ratio of gas moles over oil volume (water volume is ignored). Gas moles are commonly measured as gas volume at standard conditions (eg SCF or SCM). Black oil is a three phase mixture of oil, water and gas. The density can be calculated for two phase (oil and water) liquid, single phase gas, or three phase black oil (oil, water and gas).

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)