Before · Abandonment
Gas Migration
Gas that travels up outside the casing and reaches the soil or the surface around the well.
What it does
Tested before surface abandonment. In Alberta any gas migration detected must be reported to the AER within 30 days, and its source identified and repaired before the well is cut and capped.
Basics
| Test | Per AER Directive 087, section 3.2.2 |
| Report | Within 30 days of detection (Alberta) |
| Before surface abandonment | Source repaired |
Common failures
- Gas migration found after the well was cut and capped
Troubleshooting
- Symptom
- Gas detected around the well
- Likely cause
- Leak path from a gas zone
- What to check
- Report within 30 days, find the source and repair it before surface abandonment