Chevron Canada has confirmed that “a magnitude 4.4 seismic event was recorded by seismic monitoring arrays operated by Chevron Canada and Natural Resources Canada” in the Duvernay shale near Fox Creek, Alberta on Saturday.
It’s the second record-breaking industry-reported tremor to hit the region in a year. In January, industry triggered a 4.4 magnitude earthquake in the Duvernay shale.
That event forced the Alberta Energy Regulator to adopt a “traffic light system” to regulate seismic events in the region. The system requires companies to report events greater than a magnitude of 2.0, and to shut down operations once a 4.0 magnitude event is observed nearby.
As a result of the new regulations, Chevron reported the earthquake to the regulator and shut down operations at a natural gas well pad located approximately 27 kilometres south of Fox Creek.
However, the regulator has given the company permission to finish securing the well before it temporarily suspends operations at the site.