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, 2022, orphan inventory counts are as follows:

2,638Orphan Sites for Decommissioning
(sites will start reclamation process after decommissioning has been fully completed)
Assets included on the 2,638 sites are:
1,851Orphan Wellbores for Decommissioning PDF EXCEL
267Orphan Facilities for Decommissioning PDF EXCEL

3,643Orphan Pipelines for Decommissioning PDF EXCEL
5,922Orphan 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 2022.

1,851 Orphan Wellbores for Decommissioning

  • 92% in progress or planned for work in current fiscal year (April 1, 2022 to March 31, 2023)
  • 14% downhole decommissioning/abandonment completed (only cut & cap remaining)

5,922 Orphan Sites for Reclamation

  • 29% in environmental assessment phase
  • 4% in remediation phase
  • 22% in reclamation phase
  • 44% in vegetation monitoring only or final certification phase
1,591 Orphan Sites that have been reclamation certified to date (no further work required) PDFEXCEL

WIPA Inventory Lists

The following table includes all inventory that falls under the WIPA program.

What is a WIPA?

A Working Interest Participant Agreement (WIPA) is an agreement between the OWA and Working Interest Participants (WIP’s) to execute the suspension, abandonment, decommissioning, remediation or reclamation work on a WIP-controlled site(s) licensed to a defunct company. The overall intent of any WIPA entered into by the OWA must always be based on the foundation of reducing costs to the Orphan Fund. Based on economies of scale, the OWA can typically execute projects for substantially less cost than a WIP.

For more information on WIPAs, click HERE.

63WIPA – Sites for DecommissioningPDFEXCEL
59WIPA – Wellbores for DecommissioningPDF EXCEL
7WIPA – Facilities for DecommissioningPDF EXCEL
94WIPA – Sites for ReclamationPDF 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


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.