Earthquakes occurring frequently near Fort St. John by Energetic City, September 30, 2015
Did you feel that? Maybe not, but there have been small across the Peace recently, noticed by some, or quietly occurring.
In the last week, 15 small earthquakes were recorded northwest of Fort St. John, and 10 have been recorded outside of Dawson Creek, mostly north and northwest.
The biggest one in the past week was a 3.0 magnitude quake recorded 122 km northwest of Fort St. John, on the 26th.
So why all the earthquakes? The connection between earthquakes and fracking has been heavily debated – some say it causes the earthquakes, some say there’s no correlation. [But, industry and government quake experts in Canada are not debating it, they have already proven fracing is causing earthquakes]
According to CBC, a 4.6 magnitude earthquake near Fort St. John last month caused work to stop at a Progress Energy work site. Drilling at natural gas wells has to be halted if seismicity reaches a magnitude of 4.0 and greater.
Alan Clay with the BC Oil and Gas Commission told Energetic City in an e-mailed statement that fracking has been increasing in the area in recent years, but did not confirm if it is causing these smaller quakes.
“Yes, hydraulic fracturing has been happening safely in BC for more than 50 years, with most of the activity in the Northeast region around Fort St. John,” he said.
He said 80% of the new wells having hydraulic fracturing done target the Montney geological formation.
Clay added that British Columbia has strong hydraulic fracturing laws – and that water contamination as a result of fracking has never been reported.
[Refer also to:
2015 09 08: Netherlands court orders Shell & Exxon Mobil to pay 100,000 homeowners billions of dollars in quake damages
2015 08 15: Dutch Court Suspends Gas Production on earthquake fears; Pennsylvania Insurance Dept Issues Quake Notice: Fracking Exclusion Not Allowed
2015: Oil & gas execs ‘pressured’ Oklahoma geologists not to reveal fracking-quakes link; Industry Pressure Kept Oklahoma’s Scientists Silent on Earthquake-Fracking Link Since 2010: Report
2015: AER Master Deregulator promises regulation while bamboozling media and the public. UK frac quake “red light” is 0.5M, in Alberta, it’s 4.0M
2015: Quakes in Gas Fields Ignored for Years, Dutch Safety Agency’s report a relevant read for any fracking zone; Fox Creek frac quakes make AER play deregulation with you and your loved ones: “Red Light = Green Light”
2015: Fracking Quakes Pose Added Risks but Oil and Gas Companies Refuse to Share their Collected Seismic Data. “In low seismic environments like Fox Creek where the natural earthquakes are infrequent, the hazards from an induced seismic event can exceed the hazards from a natural source”
2014: International panel of geoscientists concluded pair of deadly earthquakes that struck Italian region of Emilia-Romagna in 2012 could have been triggered by petroleum extraction
2013: Spain Suffers from Hundreds of Earthquakes Caused by Offshore Drilling; Largest is Magnitude 4.2; Citizens Complain of Cracks and Tremors Whipping Their Homes
B.C. Oil and Gas Commission lacks ‘transparency’ on fracking violations
2015: Fox Creek: Yet another earthquake in AER’s deregulated blanket approval frac experiment. Fracking-Related Earthquakes Could Ding Credit Quality
2015: Chevron reported 3.6 magnitude event; Shut down by AER. Is the AER’s Frac Quake Stop Light System Irrelevant? Another 4.4 Magnitude Earthquake at Fox Creek
2015: Special Report by Andrew Nikiforuk: Fracking Industry Has Changed Earthquake Patterns in Northeast BC, Impact on groundwater and migrating gases mostly unknown
2015: NE BC: Monday’s 4.5 Magnitude frac quake, felt from Pink Mountain to Fort St. John (180 km), ‘likely’ caused by Progress Energy, OGC confirms
New BC OGC Report: From August 2013 to October 2014 Fracking directly caused 193 earthquakes (11 felt on surface), 38 more caused by waste injection, in Montney basin area surrounding Dawson Creek and Ft St John
2012: Investigation of Observed Seismicity in the Horn River Basin
Between April 2009 and July 2011, 31 seismic events were recorded and located by NRCan in the Etsho area of the Horn River Basin in northeast British Columbia (Figure 1). Another seven events were recorded near the Tattoo area between Dec. 8 and Dec. 13, 2011. The observed events ranged in magnitude between 2.2 and 3.8 ML on the Richter scale as recorded by NRCan (Table 1). A search of the areas in the National Earthquake Database from 1985 to present shows no detected seismicity in the Horn River Basin prior to 2009.
As hydraulic fracturing fluids are injected into intact gas bearing shales, thousands of micro-seismicity events (approx -3.0 to 0.5 ML) are created as the rock is fractured. These events are caused by micro shear movement and tensile fractures and by the re-opening of existing fractures and faults
Two instances of wellbore deformation along horizontal sections were reported by one operator. These occurred over a short interval beginning at 3,011 m KB (Kelly Bushing) in the d-A1-D/94-O-9 well. In this instance, casing deformation was minor and did not hinder completion operations. At d-1-D/94-O-9, the deformation was encountered at 4,245 m KB and the casing distortion blocked completion efforts at 4,288 m KB. … This deformation was detected in July 2011.
Horn River Basin seismicity events, from 2009 to late 2011, were caused by fluid injection during hydraulic fracturing. All events occurred during or between hydraulic fracturing stage operations. [Emphasis added]