Production EngineeringWell Performance
API RP 14E Erosional Velocity Formula
API RP 14E Erosional Velocity calculates erosional velocity for well performance workflows in production engineering.
How engineers use this formula
Use this formula when the listed inputs (C, rho_m) are known and the assumptions behind the cited well performance relationship match the engineering case being checked.
Assumptions
- Input values are representative for the well, reservoir, fluid, or equipment case being evaluated.
- The declared units match the field-unit constants used in the formula.
- The cited formula applies to the selected petroleum engineering workflow.
Limitations
- The calculation does not replace a full engineering model or operating procedure.
- Accuracy depends on the source correlation, assumptions, input quality, and unit consistency.
Common mistakes
- Mixing unit systems without converting the inputs.
- Using default example values as field recommendations.
- Applying the formula outside the source assumptions.
Default example
Using the default inputs, V_e equals 28.523024 ft/s.
Cempirical
100
rho_mlb/ft3
12.29161306450595
Inputs
C
empiricalAPI RP 14E Empirical C Factor
rho_m
lb/ft3Gas-Liquid Mixture Density
Outputs
V_e
ft/s
Erosional Velocity
C
empirical
API RP 14E Empirical C Factor
rho_m
lb/ft3
Gas-Liquid Mixture Density
Source and review
reviewedReview of the API RP 14E erosional velocity equation, Eq. 1 and listed API C-factor guidance.
SourceRelated formulas and calculators
Effective Wellbore Radius of a Well in Presence of Uniform Flux Fractures
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Effective Wellbore Radius of a Horizontal Well – Method 1 (Anisotropic Reservoirs)
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Effective Wellbore Radius of a Horizontal Well – van der Vlis et al. Method
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