Oil and gas commission investigating quakes in northeast B.C.

Oil and gas commission investigating quakes in northeast B.C.

Honn Kao, a research scientist with the Geological Survey of Canada, said the probability is ‘very high’ that the tremors were caused by fracking

The British Columbia Oil and Gas Commission is investigating a series of earthquakes that one expert says were very likely caused by hydraulic fracturing, a fuel extraction process also known as fracking.

Earthquakes Canada reported a 4.5 magnitude quake just before 5:30 p.m. Thursday that was felt in Fort St. John, Taylor, Chetwynd and Dawson Creek in the province’s northeast. A second quake rattled the region about 45 minutes later and measured 4.0.

The oil and gas commission issued a brief statement Friday that said operations in the area were immediately shut down as a precaution and mitigation strategies will be put into place for any operations linked to seismic events.

Honn Kao, a research scientist with the Geological Survey of Canada, said the probability is “very high” that the tremors were caused by fracking, which involves injecting high-pressure liquid into the ground to extract oil and gas.

He said the survey established seismic stations in the region in 2013 and the stations automatically detected the quakes Thursday evening. It contacted the oil and gas commission, which investigated to see if there is a specific fracking operation nearby, he said.

READ MORE: 4.5 magnitude earthquake strikes near Fort St. John

“Our colleagues at the BC Oil and Gas Commission immediately realized that there was an active hydraulic fracturing operation in the vicinity of the epicentre,” he said.

He said the quakes are consistent with the pattern of fracking-induced events, and the preliminary assessment of the geological survey is that the tremors were likely caused by fracking. The geological survey and the oil and gas commission continue to investigate, he said.

“This is not 100 per cent proof … but we are continuing to work with the BC Oil and Gas Commission to get more detailed operation data.”

Geoff Morrison, B.C. manager of the Canadian Association of Petroleum Producers, said safe and sustainable natural gas development is a priority for operators in northeast B.C.

“Natural gas activity is strictly regulated and monitored, and the safety of communities located near operations is of paramount importance. We have a track record of robust regulations, employing best industry operating practices, and working to continuously improve our environmental performance,” he said in a statement.

The industry will continue to work closely with the oil and gas commission as it conducts its investigation, he added.

The commission has been monitoring induced seismicity caused by fuel extraction activities for some time. It has previously found that hydraulic fracturing and wastewater disposal can cause seismic activity.

It released two studies on induced seismicity caused by oil and gas activities, in 2012 and 2014. The most recent study found there were 231 seismic events caused by oil and gas operations in the Montney Trend, a natural gas reserve in northeast B.C., between August 2013 and October 2014.

The U.S. Geological Survey said in its tectonic summary of Thursday’s quake in northeast B.C. that there is evidence that some North American earthquakes have been triggered by human activities that have altered the stress conditions in the Earth’s crust, including fracking.

Kao said the majority of fracking does not induce earthquakes that are felt by people.

One of the reasons that fracking can cause earthquakes that are felt is because the water or fluids injected into the ground disturb naturally occurring geological faults.

In Canada, the highest recorded magnitudes of earthquakes caused by fracking are about 4.5 to 4.6, Kao said, adding that the duration of these earthquakes is short and they are usually shallow.

“Even though the preliminary assessment appears to indicate that this is an induced event, we are still working on it and making sure our analysis is as complete as possible.”

The Canadian Press

Like us on Facebook and follow us on Twitter.

Get local stories you won't find anywhere else right to your inbox.
Sign up here

Just Posted

Nanaimo Regional General Hospital. (News Bulletin file photo)
COVID-19 outbreak at Nanaimo hospital appears to be contained, says Island Health

Chief medical health officer urges patients to meet scheduled appointments

Beef to the person in the little car who tailgates me with high beams along Kilpatrick and Jingle Pot in the morning and lays on the horn when I turn left onto East Wellington. If following the speed limit is not going to get you where you are going on time please do not take it out on me. May I suggest you leave a bit sooner.
Beefs & Bouquets, Jan. 27

To submit a beef or a bouquet to the Nanaimo News Bulletin, e-mail editor@nanaimobulletin.com

(News Bulletin file)
COVID-19 affects student enrolment and funding for Nanaimo school district

More distance-ed students leads to yet-to-be divvied out money, says SD68 secretary-treasurer

An Island Health graph showing COVID-19 cases in the central Island by local health area between Dec. 27 and Jan. 23. (Island Health image)
Central Island’s COVID-19 case spike shifting, says Island Health

Cowichan Valley has seen the highest number of cases, but Nanaimo and south Island seeing upticks

Cash and drugs allegedly found in a suspect’s possession following an arrest earlier this month in downtown Nanaimo. (Photo submitted)
Accused drug dealer arrested in downtown Nanaimo carrying $20,000, fentanyl, crack and meth

Terrance Virus, 39, being held in custody, scheduled to appear in court Feb. 1

An Island Health graph showing COVID-19 cases in the central Island by local health area between Dec. 27 and Jan. 23. (Island Health image)
Central Island’s COVID-19 case spike shifting, says Island Health

Cowichan Valley has seen the highest number of cases, but Nanaimo and south Island seeing upticks

Keith Thorpe/Peninsula Daily News
Search called off for small plane that went down in rough water south of Victoria

Plane bound for Port Angeles from Alaska believed to have one occupant, an Alaskan pilot

This coming Thursday, Jan. 28, is Bell Let’s Talk Day, and conversations about mental health would serve many of us well as the pandemic persists. (Zackary Drucker/The Gender Spectrum Collection)
Editorial: Let’s talk about our mental health in a pandemic

Bell Let’s Talk Day is Thursday, Jan. 28

B.C. Premier John Horgan wears a protective face mask to help prevent the spread of COVID-19 prior to being sworn in by The Honourable Janet Austin, Lieutenant Governor of British Columbia during a virtual swearing in ceremony in Victoria, Thursday, November 26, 2020. THE CANADIAN PRESS/Jonathan Hayward
Premier Horgan calls jumping COVID vaccine queue ‘un-Canadian’

Horgan says most people in B.C. are doing their best to follow current public health guidelines

Worker at Swartz Bay terminal on Monday, January 20, 2020. (THE CANADIAN PRESS/Chad Hipolito)
Former BC Ferries employee alleges he was fired because of his race

Imraan Goondiwala has been granted a BC Human Rights Tribunal hearing

A concrete seawall built to prevent erosion on a property on Driftwood Drive on Mudge Island. (Islands Trust image)
Appeal Court says Mudge Island homeowners’ seawall has to go

Court decides right to guard against erosion isn’t a ‘privileged’ property right

B.C. Ferries is in the midst of gathering support from local governments for a plan that would fully electrify Island-class ferries. A pair of hybrid ferries are slated for the Gabriola-downtown Nanaimo ferry route for 2022. (News Bulletin file)
Hybrid vessels just a start as B.C. Ferries works toward fully electric sailings on Gabriola route

Ferry corporation seeking support from local governments for electrification plan

Royal B.C. Museum conservator Megan Doxsey-Whitfield kneels next to a carved stone pillar believed to have significance as a First Nations cultural marker by local Indigenous people. The pillar was discovered on the beach at Dallas Road last summer. Museum curatorial staff have been working with Songhees and Esquimalt Nation representatives to gain a clearer picture of its use. (Photo courtesy Royal BC Museum)
Stone carving found on Victoria beach confirmed Indigenous ritual pillar

Discussion underway with the Esquimalt and Songhees about suitable final home for the artifact

Former Vancouver Giants forward Evander Kane is seen here in Game 7 of the second round of the 2009 WHL playoffs against the Spokane Chiefs (Sam Chan under Wikipedia Commons licence)
Gambling debts revealed in details of bankruptcy filing by hockey star Evander Kane

Sharks left winger and former Vancouver Giants player owes close to $30 million total

Most Read