Downhole · Gas Lift
Production Packer
A sealing tool set between the tubing and the casing below the gas lift valves.
What it does
Isolates the injection gas in the annulus from the producing zone, so gas only enters through the valves. The most common gas lift setup uses a packer.
Basics
| Setup | Most common: packer plus gas lift valves |
| Without it | Open system, no seal between tubing and annulus |
| Position | Below the operating valve, above the perforations |
Common failures
- Packer leak lets gas reach the formation side
Troubleshooting
- Symptom
- Injection gas lost with no lift response
- Likely cause
- Packer not holding
- What to check
- Annulus pressure test