Orphan wells in Alberta, Canada

Orphan wells in Alberta, Canada are inactive oil or gas well sites that have no solvent owner who can be held legally or financially accountable for the decommissioning and reclamation obligations to ensure public safety and to address environmental liabilities. The 100% industry-funded Alberta Energy Regulator (AER)—the sole regulator of the province's energy sector—manages licensing and enforcement related to the full lifecycle of oil and gas wells based on Alberta Environment Ministry requirements, including orphaned and abandoned wells.

Source: Wikipedia — Orphan wells in Alberta, Canada (CC BY-SA 4.0)