1. Gas-Lift Breakout Session Report Out Fall 2003 Gas-Lift Workshop
Wednesday, October 22, 2003
Dual Gas-Lift --- Highlights
Information we’d like to see in API RP 11V9
Design method to produce both high and low PI wells (sides of a dual well) at same time
Ways to effectively model dual wells
Methods to unload – unload together or one at a time
Effects of temperature on unloading valve design
Some actual/potential dual gas-lift problems
Problems if use IPO valves on both sides of a dual
Lift from different depths in each side
Need good well data to design PPO valves
Problems with 1” nitrogen and spring charged PPO valves hanging open
Flow cutting of upstream choked valves
6/28/2019
Gas-Lift Surveillance Course

2. Gas-Lift Breakout Session Report Out Fall 2003 Gas-Lift Workshop
Wednesday, October 22, 2003
Dual Gas-Lift --- Highlights
Some actual/potential successes in dual gas-lift
Use PPO valves for unloading
Install IPO valves at operating depth
Install nozzle venturi in poor side to limit injection
Some say to not use a nozzle venturi on both sides
Some think it would be OK
Use same port size on both sides
Use of proportional response or constant flow valves better than IPO
Use IPO on one side, PPO on other
Unload IPO side first
Use operating casing pressure to design/unload other side
6/28/2019
Gas-Lift Surveillance Course