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Liquid Loading Calculator

Calculate critical gas velocity for liquid lifting in gas wells using Turner and Li-Mao-Sarica correlations. Diagnose liquid loading from current wellhead conditions.

Well Conditions

Water ≈ 62.4, condensate ≈ 45-55

Water ≈ 60, condensate ≈ 20

2⅞" = 2.441", 2⅜" = 1.995"

Results

Turner vcrit

--

ft/s

Li vcrit

--

ft/s

Current Velocity

--

ft/s

Qcrit (Turner)

--

Mscf/d

Equations

Gas Density: ρg = 2.7 × γg × P / (z × T) [lb/ft³, T in Rankine]

Turner Critical Velocity: vT = 5.62 × [σ(ρLg)]^0.25 / ρg^0.5 [ft/s]

Li-Mao-Sarica Critical Velocity: vLi = 2.5 × [σ(ρLg)]^0.25 / ρg^0.5 [ft/s]

Critical Rate: qcrit = 3.06 × P × vcrit × A / (z × T) [Mscf/d]

References: Turner et al. (1969) SPE 2198; Li et al. (2001) SPE 72092.

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Disclaimer: For screening purposes only. Verify with production data and detailed engineering analysis.