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

One person dead in head-on collision near Stettler

Stettler RCMP investigate fatal collision

Notley promises extra $90M a year to reduce waits in surgery, emergency rooms

Leader says she’d keep funding specialized liaison teams so paramedics can get back to work faster

New Democrats would bring in $25 daycare if re-elected: Notley

Notley said the plan would include adding 13,000 daycare spaces

Seasonal road bans for the County of Stettler declared for Monday

Road bans go into effect Monday, March 25 at 1 p.m.

The good, bad and the unknown of Apple’s new services

The announcements lacked some key details, such as pricing of the TV service

One Maskwacis man arrested after gun seized on reserve

Maskwacis RCMP locate loaded handgun during search warrant

Military officer accused of sexual misconduct, drunkenness in B.C., Alberta

Warrant Officer Jarvis Kevin Malone is charged under the National Defence Act

Morneau unveils principles for Indigenous ownership in Trans Mountain pipeline

The controversial pipeline was bought by Ottawa last year

Refugee who sheltered Edward Snowden in Hong Kong arrives in Canada

Vanessa Rodel and her seven-year-old daughter Keana arrived in Toronto this week

New UMSCA trade deal getting a boost from Trump, business groups

The trade deal is designed to supplant the North American Free Trade Agreement

Trudeau says he, Wilson-Raybould had cordial conversation last week

Trudeau denies anything improper occurred regarding SNC-Lavalin and the PMO

SNC-Lavalin backtracks on CEO’s comments surrounding potential job losses

Top boss had said protecting 9,000 jobs should grant leniency

Sources say Trudeau rejected Wilson-Raybould’s conservative pick for high court

Wilson-Raybould said Monday “there was no conflict between the PM and myself”

Most Read