AER to release 2013 Primrose oil sands leak report
Alberta Energy Regulator investigated bitumen-water mixture oozing to the surface at CNRL’s site.
Oil & Gas
CALGARY — The Alberta Energy Regulator will release its report on its investigation into a high-profile oil leak nearly three years ago.
During the spring of 2013, a bitumen-water mixture was found oozing to the surface at Canadian Natural Resources’ Primrose oil sands site in eastern Alberta.
More than a million litres of the fluid was recovered from four locations.
CNRL had been using an extraction method at Primrose known as high-pressure steam stimulation, the safety of which has been questioned by environmental groups.
In September of 2014, the regulator allowed the company to resume operations at part of Primrose using a different technique called low-pressure steam flooding.
An earlier review pointed to the problems at Primrose being twofold: faulty old wellbores at the site and the extraction method CNRL used.
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