Production EngineeringWell PerformanceCalculation record

API RP 14E Actual Mixture Velocity Calculator

V_m=\frac{4q_v}{\pi(D_i/12)^2}

Enter the declared production engineering inputs below to solve V_m. Variable definitions, units, the default calculation, and the available source trail are included on this page.

Tabular solver

Extended guidance in preparation

What is available in this record

This record provides the functioning calculator, formula, declared variables and units, a reproducible default result, and the available citation metadata. A separately written engineering interpretation has not yet been published for this calculation.

Formula reference

Formula, variables, and default calculation

V_m=\frac{4q_v}{\pi(D_i/12)^2}

Reproducible default result

With the default values shown below, the calculation returns V_m = 20.746433 ft/s. Defaults demonstrate the implementation; they are not recommended field values.

q_vft3/s

1.1227729468599035

D_iin

3.15

Input definitions

q_v

ft3/s

Actual Wellstream Volumetric Flow Rate

D_i

Pipe Inside Diameter

Output definitions

V_m

ft/s

Actual Mixture Velocity

q_v

ft3/s

Actual Wellstream Volumetric Flow Rate

D_i

Pipe Inside Diameter

Source and record status

Source metadata identifies the relationship implemented by the calculator. Check the cited edition, unit basis, and scope against the engineering case before operational use.

reviewed

API RP 14E Appendix A flowline example calculates flowing velocity from actual volumetric flow rate divided by pipe area.

Open source reference