Production EngineeringWell PerformanceCalculation record

API RP 14E Gas-Liquid Mixture Density Calculator

\rho_m=\frac{12409S_LP+2.7RS_gP}{198.7P+RTZ}

Enter the declared production engineering inputs below to solve rho_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

\rho_m=\frac{12409S_LP+2.7RS_gP}{198.7P+RTZ}

Reproducible default result

With the default values shown below, the calculation returns rho_m = 12.291613 lb/ft3. Defaults demonstrate the implementation; they are not recommended field values.

S_Lspecific gravity

1.0470588235294118

Ppsia

1615

Rscf/bbl

5882.35294117647

S_gspecific gravity

0.66

TdegR

580

Zdimensionless

0.81

Input definitions

S_L

specific gravity

Average Liquid Specific Gravity

P

psia

Operating Pressure

R

scf/bbl

Gas-Liquid Ratio

S_g

specific gravity

Gas Specific Gravity

T

degR

Operating Temperature

Z

dimensionless

Gas Compressibility Factor

Output definitions

rho_m

lb/ft3

Gas-Liquid Mixture Density

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

Review of the API RP 14E erosional velocity equation, Eq. 2 mixture-density form.

Open source reference