Gas Lift Optimization Calculator
Optimize injection rate and calculate gas lift performance
Well & Gas Lift Parameters
Enter well data and current gas lift settings
Gas Lift Efficiency Factors
- Optimal GLR typically 400-800 scf/STB
- Higher injection increases production to a point
- Beyond optimum, efficiency decreases
- Consider compression costs vs. production gains
Optimization Results
Enter parameters and click Optimize
Formula Reference
Gas Lift Performance
Production Rate = PI * (Pr - Pwf)
Where Pwf is affected by gas lift reducing hydrostatic head:
Pwf = Pwh + Hydrostatic - Friction + Gas Lift Effect
Gas Lift Effect reduces average density in tubing:
rho_mix = (rho_L * (1-Hg) + rho_G * Hg)
Gas-Liquid Ratio (GLR)
GLR = (Formation GOR + Injection Gas) / Liquid Rate
GLR_total = GOR + (Qgi / Ql)
Where:
GOR = Formation gas-oil ratio (scf/STB)
Qgi = Injection gas rate (MSCF/d)
Ql = Liquid rate (STB/d)
Optimal Injection Rate
The optimal injection rate balances:
1. Production gain from reduced Pwf
2. Increased friction losses at high GLR
3. Gas compression and operating costs
Typical optimal GLR range: 400-800 scf/STB
Beyond this, incremental production per MSCF decreases
Gas Lift Efficiency
Efficiency = Oil Production / Gas Injection Rate
Units: STB oil / MSCF gas
Typical range: 0.5 - 2.0 STB/MSCF
Higher efficiency = better use of injection gas