Production EngineeringWell Performance
API RP 14E Erosional Velocity Utilization Formula
API RP 14E Erosional Velocity Utilization calculates erosional velocity utilization for well performance workflows in production engineering.
How engineers use this formula
Use this formula when the listed inputs (V_m, V_e) 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, U_e equals 0.703269 fraction.
V_mft/s
20.74643324373131
V_eft/s
29.5
Inputs
V_m
ft/sActual Mixture Velocity
V_e
ft/sErosional Velocity
Outputs
U_e
fraction
Erosional Velocity Utilization
V_m
ft/s
Actual Mixture Velocity
V_e
ft/s
Erosional Velocity
Source and review
reviewedAPI RP 14E gas/liquid two-phase sizing criteria; NACE review summary of API RP 14E recommendation to keep mixture velocity below erosional velocity.
SourceRelated formulas and calculators
Effective Wellbore Radius of a Well in Presence of Uniform Flux Fractures
Well Performance
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
Well Performance