Investigation Reports

An investigation of an incident is a process that determines the facts leading to an incident. This assesses root cause, identifies controls to eliminate or mitigate risks, contributing factors and the sequence of events leading to the failure. The process may identify required action by the licensee, non-compliance against regulations and may include recommendations to mitigate the risk of future occurrence. The findings are included in a report that is published on the website.

The Compliance Dashboard demonstrates how the AER is involved in incident response, investigations, compliance, and enforcement. The AER also publishes a number of educational resources—presentations, FAQs, brochures, and guidance information—that relate to AER directives, rules, and regulations.

Title Company Description Incident Date Report Release Date

Root Cause and Regulatory Response Report 2016-03-21

Supporting Documents
[410 MB ZIP]

Canadian Natural Resources Ltd. Primrose Bitumen Emulsion Releases, 2013 January 2009, May and June 2013 March 21, 2016

Plains Midstream
Investigation Report 2014-03-04

Supporting Documents
[472MB ZIP]

Plains Midstream Canada ULC NPS 12 Rangeland South, Pipeline Failure and Release into the Red Deer River, Licence No. 5844, Line 1 June 7, 2012 March 4, 2014

Pace Investigation
Report 2014-03-03

Supporting Documents
[476MB ZIP]

Pace Oil and Gas Wellhead Piping Failure Licence No. W0057420 May 19, 2012 March 3, 2014

Swan Hills Investigation
Report 2014-02-25

Supporting documents
[110MB ZIP]

Swan Hills
Synfuels Ltd
Well Blowout October 10, 2011 February 25, 2014

Pembina Investigation
Report 2013-02-26

Supporting Documents
[47MB ZIP]

Pembina Pipeline
Corporation
Pipeline Failures Licence No. 2349, Line No. 10 July 20 & August 15, 2011 February 26, 2013

Pengrowth Investigation
Report 2013-02-26

Supporting Documents
[81MB ZIP]

Pengrowth Energy
Corporation
Pipeline Failure Licence No. P4218, Line No. 117 June 26, 2011 February 26, 2013

Plains Midstream Investigation
Report 2013-02-26

Supporting Documents
[47MB ZIP]

Plains Midstream
Canada ULC
NPS 20 Rainbow Pipeline Failure Licence No. 5592, Line No. 1 April 28, 2011 February 26, 2013
Investigation Report
2013-01-08
Canadian Natural
Resources Ltd.
Primrose East Bitumen Emulsion Release January 3, 2009 January 8, 2013
CNRL Investigation Report [250MB ZIP] Canadian Natural
Resources Ltd.
Primrose East Expansion In Situ Oil Sands Project Pad 74 Final Investigation Report January 3, 2009 February 2011
Investigation Report
2012-12-20
Caltex Energy Inc. Hydraulic Fracturing Incident 16-27-068-10W6M September 22, 2011 December 20, 2012
Investigation Report
2012-12-12
Midway Energy Ltd. Hydraulic Fracturing Incident: Interwellbore Communication January 13, 2012 December 12, 2012
Investigation Report
2011-08-24
Penn West
Petroleum Ltd
Well Blowout 14-20-065-10W5M August 17, 2010 August 24, 2011
Investigation Report
2011-08-12
Daylight Energy Ltd. Well Blowout 10-31-046-10W5M March 4, 2011 August 12, 2011
Investigation Report
2011-02-11
Canadian Natural
Resources Limited
Well Blowout 09-12-75-12W6M February 24, 2010 February 11, 2011
Investigation Report
2010-07-21
Daylight Energy Amalgamationco Ltd. Sour Gas Release Surface Location 06-23-047-10W5M December 16, 2009 July 21, 2010
Investigation Report
2010-01-11
TAQA North Ltd. Well Blowout 10-10-28-29W4M June 8, 2009 January 11, 2010
Investigation Report
2009-06-18
Harvest Operations Corporation Suspended Well Release 07-11-015-09W4M September 8, 2008 June 18, 2009
Investigation Report
2009-06-01
EnCana Oil and
Gas Co. Ltd.
Well Blowout 15-20-19-08W4M October 2, 2008 June 1, 2009
Investigation Report
2009-02-19
Pembina Pipeline
Corporation
Crude Oil Pipeline Failure Licence No. 1386, Line No. 003 June 15, 2008 April 14, 2009
Investigation Report
2008-10-07
Shell Canada Limited Sour Gas Pipeline Failure Licence No. 23800, Line No. 61 November 19, 2007 October 7, 2008
Investigation Report
2008-09-02
MEG Energy Corp. Steam Pipeline Failure Licence No. P 46441, Line No. 001 May 5, 2007 September 2, 2008
Investigation Report
2007-05-22
Drayton Valley Area Hydrogen Sulphide Odours – Odour Complaints Investigation – Incident Summary Report January 14, 2007 May 22, 2007
Investigation Report
2007-05-09
Rainbow Pipe Line
Company Ltd.
Crude Oil Pipeline Failure Licence No. 6001, Line No. 001 October 10, 2006 May 9, 2007
Investigation Report
2007-02-06
Shell Canada Limited Hydrogen Sulphide Release September 12, 2006 February 6, 2007