A hydraulic fracturing, or fracking, site as seen from the air near Fort St. John, B.C. JeremyWilliams.ca

B.C. regulator says fracking caused earthquakes near Fort St. John

Hydraulic fracturing involves injecting water, sand and chemicals into a well under pressure to break up tight underground rock and free trapped oil and gas.

The B.C. Oil and Gas Commission has blamed fracking for three earthquakes in northeastern B.C. last month.

The provincial regulator says the events 20 kilometres south of Fort St. John on Nov. 29 occurred because of fluid injections during hydraulic fracturing at a Canadian Natural Resources Ltd. wellsite.

The events, which were felt but caused no surface damage, measured 3.4, 4.0 and 4.5 magnitude.

Fracking operations within the lower Montney formation were suspended after the earthquakes and are to remain suspended at the multi-well pad involved pending the results of a detailed technical review.

The commission says seven wells into the upper Montney formation had previously been drilled and completed by the Calgary-based company at the well pad with no seismic events larger than magnitude 2.5 detected.

The immediate shut down of operations is required when an induced seismic event in that region reaches or exceeds a 3.0 magnitude.

Hydraulic fracturing involves injecting water, sand and chemicals into a well under pressure to break up tight underground rock and free trapped oil and gas.

Read more: 4.5 magnitude earthquake strikes near Fort St. John

Read more: Northeast B.C. community cut off by slide has heat, power, but no answers

Companies in this article: (TSX:CNQ)

The Canadian Press

Like us on Facebook and follow us on Twitter.

Just Posted

Mission Festival of Trees wraps up Saturday

Event concludes with reading of A Child’s Christmas in Wales at All Saints Anglican Church

Planning price tag revealed for futuristic ‘We Town’ concept in Abbotsford

Developer says highrises would house 30,000, but Abbotsford mayor says project is in wrong place

Petition for free menstrual products turned over to UFV president

Almost 1,300 signatures collected calling for all campus bathrooms to be stocked

Dump truck taken off the road in Abbotsford after inspection finds six brakes not working

Driver faces $1,000 in fines, with more vehicle inspections ordered

PHOTOS: Mission skaters compete during Speed Week

Local times will be compared to other skaters around the province

VIDEO: More air-passenger rights go into effect this weekend

The first set of passenger rights arrived in mid-July in Canada

Swoop airlines adds three destinations in 2020 – Victoria, Kamloops, San Diego

Low-fair subsidiary of WestJet Airlines brings new destinations in April 2020

Aid a priority for idled Vancouver Island loggers, John Horgan says

Steelworkers, Western Forest Products returning to mediation

Navigating ‘fever phobia’: B.C. doctor gives tips on when a sick kid should get to the ER

Any temperature above 38 C is considered a fever, but not all cases warrant a trip to the hospital

Transportation Safety Board finishes work at B.C. plane crash site, investigation continues

Transport Canada provides information bulletin, family of victim releases statement

Trudeau sets 2025 deadline to remove B.C. fish farms

Foes heartened by plan to transition aquaculture found in Fisheries minister mandate letter

Man accused of child sex crimes out on bail: Delta police

Gurchetan Singh Samra, 69, must stay away from — and not communicate with — anyone under 16 years old

Wagon wheels can now be any size! B.C. community scraps 52 obsolete bylaws

They include an old bylaw regulating public morals

Indigenous mother wins $20,000 racial discrimination case against Vancouver police

Vancouver Police Board ordered to pay $20,000 and create Indigenous-sensitivity training

Most Read