1. Gas-Lift Design Outline
Design Factors
Injection Pressure
Valve Size: 1.5” or 1”
Port?
Opening & Closing pressures
Differential Valves
Others?
Continuous Flow
IPO Valves
Equilibrium curve
Constant Rate (optimum gradients)
Variable Rate
PPO Valves
Variable rate
Dual Wells
Intermittent Lift
IPO Valves: unloading
Spacing Factors
Fall-back
Pilot Operating Valve
Gas-Lift Design: Breakout----Joe Clegg

2. Gas-Lift Design Static Flowing Valve type Size Seat/Port TEF Opening
pressure
Gas-Lift Design: Breakout----Joe Clegg

3. Equilibrium Curve Juch; Neely; Blann
Gas-Lift Design: Breakout----Joe Clegg

4. IPO Valves: Constant rate design
Gas-Lift Design: Breakout----Joe Clegg

5. Optimun Gradient Graphs Design graphs for:
Wellhead Pressure = 100 psig
2.441” tubing,
GLR = 750 cu.ft/barrel
Gas Injection Pressure = 1000 psi
Kill fluid gradient = psi/ft
Gas-Lift Design: Breakout----Joe Clegg

6. Variable rate
Gas-Lift Design: Breakout----Joe Clegg

7. Blann & Winkler
Gas-Lift Design: Breakout----Joe Clegg

8. Intermitent Gas-Lift Design-- Manual
Gas-Lift Design: Breakout----Joe Clegg

9. Intermittent Gas-Lift Design
Gas-Lift Design: Breakout----Joe Clegg

10. PPO valves
Dual Well
Gas-Lift Design: Breakout----Joe Clegg

11. IPO Valves
Gas-Lift Design: Breakout----Joe Clegg

12. Conclusions
Gas-Lift Design: Breakout----Joe Clegg