Calculate the erosion rate for flexible pipe (DNVGL-RP-O501 section 4.11). The flexible pipe erosion model has been developed for ductile materials. The calculator can also be used for brittle materials, for example for sections with a similar internal profile (engineering judgement is required).
The internal diameter should be taken as the minimum internal diameter of the interlock carcass. The radius of curvature should be taken as the minimum radius of curvature during operation, including dynamic effects. A minimum geometry factor of 2.0 should be used. Maximum erosion should be limited to 10% of the carcass thickness.
Tool Input
- mvtype : Fluid Density Type
- GORu : User Defined Gas Oil Ratio
- WCu : User Defined Water Cut
- ρu : User Defined Fluid Density
- voltype : Fluid Volume Flowrate 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
- Reu : User Defined Reynolds Number
- visctype : Viscosity Type (Must Be User Defined For User Defined Density)
- μu : User Defined Dynamic Viscosity
- νu : User Defined Kinematic Viscosity
- pipetype : Pipe Material Type
- ρpu : User Defined Pipe Density
- Ku : User Defined Pipe K Factor
- nu : User Defined Pipe n Factor
- sandtype : Sand Material Type
- ρsu : User Defined Particle Density
- Su : User Defined Sand K Correction Factor
- conctype : Sand Concentration Type
- Qsu : User Defined Sand Volume Flow Rate
- Msu : User Defined Sand Mass Flow Rate
- ppmVu : User Defined Sand ppm Volume
- ppmMu : User Defined Sand ppm Mass
- Msyu : User Defined Sand Annual Mass Load
- lfactype : Erosion Loss Factor Type
- Lu : User Defined Erosion Loss Factor
- gftype : Geometry Factor Type
- GFu : User Defined GF Geometry Factor
- D : Minimum Internal Diameter
- ρo : Oil Density
- ρw : Water Density
- P : Fluid Absolute Pressure
- T : Fluid Absolute Temperature
- Z : Gas Compressibility Factor
- SG : Gas Specific Gravity
- μo : Oil Dynamic Viscosity
- μw : Water Dynamic Viscosity
- μg : Gas Dynamic Viscosity
- Ds : Average Sand Diameter
- R/D : Minimum Bend Radius Over Diameter Ratio
Tool Output
- α : Characteristic Impact Angle
- β : Sand Density Over Fluid Density Ratio
- γ : Sand Density Over Pipe Diameter Ratio
- γc : Critical Sand Density Over Pipe Diameter Ratio
- μ : Fluid Dynamic Viscosity
- ν : Fluid Kinematic Viscosity
- ρf : Average Fluid Density
- ρg : Gas Density
- ρl : Liquid Density
- ρp : Pipe Density
- ρs : Sand Density
- A : Ratio A
- At : Area Exposed To Erosion
- C1 : Particle Correction Factor
- F(α) : Impact Angle Factor
- G : Partcle Size Correction Factor
- GF : Geometry Factor
- GOR : Gas Oil Ratio
- K : Pipe K Factor
- L : Corrosion Loss Factor
- Mf : Total Fluid Mass Flow Rate
- Ms : Sand Mass Flow Rate
- Qf : Total Fluid Volume Flow Rate
- Qs : Sand Volume Flow Rate
- Re : Reynolds Number
- S : Sand K Correction Factor
- Vf : Total Fluid Velocity
- Vg : Gas Superficial Velocity
- Vl : Liquid Superficial Velocity
- Vo : Oil Superficial Velocity
- WC : Water Cut
- Ww : Water Superficial Velocity
- Xvg : Gas Volume Fraction
- Xvl : Liquid Volume Fraction
- Xvo : Oil Volume Fraction
- Xvw : Water Volume Fraction
- n : Pipe n exponent
- ppmM : Sand Concentration Parts Per Million Mass
- ppmV : Sand Concentration Parts Per Million Volume
- vg : Gas Mole Volume