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Orphan Inventory

OWA Orphan Lists

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

The first list contains wells which are licensed to defunct and/or insolvent licensees and are designated orphans by the AER for the purpose of abandonment.  Legacy wells under long term care and custody are excluded.  Please contact the Orphan Well Association for more information.

The second list contains wells designated orphans by the AER for the purpose of suspension.

The third list contains sites presently under reclamation.

The fourth list contains lists of pipeline segments designated orphans by the AER.

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

For information on how to take over an orphan well, please see the tab Taking Orphans.

As of November 29, 2017, orphan inventory counts are as follows:

1861 Orphan Wells for Abandonment



1082 Orphan Wells for Suspension



819 Orphan Sites for Reclamation



2232 Orphan Pipeline Segments for Abandonment



1333 Orphan Pipeline Segments for Suspension



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



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.

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