Orphan Inventory

OWA Interactive Map

*click on map (Download Interactive Map How-To Guide HERE)


Are you a prospective subcontractor?
Access the interactive map (above) showing all current inventory with the OWA.

  • Large BLUE dots indicate sites that have recently been assigned to a decommissioning Prime Contractor.
  • Large GREEN dots indicate sites that have recently been assigned to an environmental Prime Contractor.

You may contact these Prime Contractors regarding any pending planned work on these sites.

  • Any BLUE or GREEN dots with YELLOW borders represent sites that have recently been orphaned and have not yet been assigned to a Prime Contractor.

Your are encouraged to check the map regularly as these sites will be assigned to Prime Contractors once initial inspections have been completed.


OWA Orphan Inventory Lists

The attached lists of orphan properties are available as a downloadable Portable Document Format (PDF) file, viewable with Adobe Acrobat Reader.

The list below is a summary of wells, facilities and pipelines which are licensed to defunct and/or insolvent licensees and are designated orphans by the AER for the purpose of decommissioning. Legacy wells under long term care and custody are excluded.  Please contact the Orphan Well Association for more information.

If you are having difficulties viewing these lists, please contact: Marcia Baker at (403) 297-6416 or by email info@orphanwell.ca

For information on how to take over an orphan well, please see the Producers.

PLEASE NOTE: Only assets designated as orphan by the AER are under the management of the OWA.

As of June 1, 2021, orphan inventory counts are as follows:

2,684 Orphan Sites for Decommissioning (sites will start reclamation process after decommissioning has been fully completed) PDF EXCEL
Assets included on the 2,684 sites are:    
  • 2,124 Orphan Wellbores for Decommissioning
PDF EXCEL
  • 308 Orphan Facilities for Decommissioning
PDF EXCEL
3,137 Orphan Pipelines for Decommissioning PDF EXCEL
5,094 Orphan Sites for Reclamation (decommissioning has been fully completed) PDF EXCEL
OWA Orphan Work Status

The following summary is a breakdown of abandonment and reclamation work completed or ongoing in 2021.

2,124 Orphan Wellbores for Decommissioning

  • 85% in progress or planned for work in current fiscal year (April 1, 2021 to March 31, 2022)
  • 10% downhole decommissioning/abandonment completed (only cut & cap remaining)

5,094 Orphan Sites for Reclamation

  • 31% in environmental assessment phase
  • 5% in remediation phase
  • 27% in reclamation phase
  • 33% in vegetation monitoring only or final certification phase
1,236 Orphan Sites that have been reclamation certified to date (no further work required) PDF EXCEL
AER Well Information

See attached for a list of wells with production information from the AER. Please note the AER disclaimer at the end of the attached list and that the AER list includes multiple events. For any further inquiries about the information in this report, please contact the AER at liabilitymanagement@aer.ca

AER_Licence_Details_Report EXCEL

The Orphan Well Association or OWA makes no representation, warranties, or guarantees, expressed or implied, for the fitness of the data with respect to its use. The OWA is not responsible for any costs incurred from use of the information in this list.

The AER Licence Details Report includes multiple events for individual wells in order to report production. Therefore there will be more entries than number of wells. Users of this list are advised that it does not necessarily reflect the current inventory of orphan wells held by the OWA and users are responsible for confirming any information used.