The best of EcoWatch, right in your inbox. Sign up for our email newsletter!
Groundbreaking Study Confirms Link Between Fracking and Earthquakes
The report, Hydraulic Fracturing and Seismicity in the Western Canada Sedimentary Basin, confirms the horizontal drilling technique (which in essence creates an underground mini-earthquake to open up fissures for oil and gas extraction) is responsible for earthquakes, above and beyond what is already canonized in the scientific literature.
The study focuses on an area in Canada known as the Western Canada Sedimentary Basin, one of Canada's biggest shale basins and tight oil and gas producing regions.
The researchers “compared the relationship of 12,289 fracking wells and 1,236 wastewater disposal wells to magnitude 3 or larger earthquakes in an area of 454,000 square kilometers near the border between Alberta and British Columbia, between 1985 and 2015,” explained a press release. They “found 39 hydraulic fracturing wells (0.3 percent of the total of fracking wells studied) and 17 wastewater disposal wells (1 percent of the disposal wells studied) that could be linked to earthquakes of magnitude 3 or larger.”
If that sounds like a fairly small percentage, Atkinson and colleagues readily admit that is the case in the study. Yet they also write that it could portend worse things to come as more and more wells are fracked in the region.
“It is important to acknowledge that associated seismicity occurs for only a small proportion of hydraulic fracturing operations,” they wrote, proceeding to cite another paper written in 2015 by lead author Gail Atkinson—a professor of earth sciences at the University of Western Ontario—and colleagues on the impacts of induced seismicity. “However, considering that thousands of such wells are drilled every year in the Western Canada Sedimentary Basin, the implications for hazard are nevertheless significant, particularly if multiple operations are located in close proximity to critical infrastructure.”
The Western Canada Sedimentary Basin uses less water during fracking operations than in places like the current mecca of frackquakes, Oklahoma. In the paper, the authors also conclude that the massive amount of wastewater incidents in the U.S. may cloak the impact fracking has had on induced seismicity in the central U.S., which calls for more scientific investigation.
“[I]t is possible that a higher-than-recognized fraction of induced earthquakes in the United States are linked to hydraulic fracturing, but their identification may be masked by more abundant wastewater-induced events,” they explained.
One of their most important finds appears to be the definitive link the researchers found between fracking and earthquakes in the region, rather than the sheer number of quakes. They also found no link between the amount of fluid pumped into the ground during fracking and the size of the earthquake.
“More than 60 percent of these quakes are linked to hydraulic fracture, about 30-35 percent come from disposal wells and only 5 to 10 percent of the earthquakes have a natural tectonic origin,” said Atkinson in a press release. And “if there isn't any relationship between the maximum magnitude and the fluid disposal, then potentially one could trigger larger events if the fluid pressures find their way to a suitably stressed fault.”
What's the big takeaway, then, according to the paper? Of course, a call for more investigation, but in the meantime they also call for more thoughtful public policy moving forward.
“The nature of the hazard from hydraulic fracturing has received less attention than that from wastewater disposal, but it is clearly of both regional and global importance,” they wrote in the conclusion. “The likelihood of damaging earthquakes and their potential consequences needs to be carefully assessed when planning HF operations in this area.”
YOU MIGHT ALSO LIKE
EcoWatch Daily Newsletter
Oil rigs around the world keep pulling crude oil out of the ground, but the global pandemic has sent shockwaves into the market. The supply is up, but demand has plummeted now that industry has ground to a halt, highways are empty, and airplanes are parked in hangars.
Under an agreement negotiated by community groups — represented by NRDC and the Pennsylvania Utility Law Project — the Pittsburgh Water and Sewer Authority (PWSA) will remove thousands of lead water pipes by 2026 in order to address the chronically high lead levels in the city's drinking water and protect residents' health.
By Dave Cooke
So, they finally went and did it — the Trump administration just finalized a rule to undo requirements on manufacturers to improve fuel economy and reduce greenhouse gas emissions from new passenger cars and trucks. Even with the economy at the brink of a recession, they went forward with a policy they know is bad for consumers — their own analysis shows that American drivers are going to spend hundreds of dollars more in fuel as a result of this stupid policy — but they went ahead and did it anyway.
By Richard Connor
A blood test that screens for more than 50 types of cancer could help doctors treat patients at an earlier stage than previously possible, a new study shows. The method was used to screen for more than 50 types of cancer — including particularly deadly variants such as pancreatic, ovarian, bowel and brain.
Preliminary data from the Centers for Disease Control showed a larger number of young people coming down with COVID-19 than first expected, with patients under the age of 45 comprising more than a third of all cases, and one in five of those patients requiring hospitalization. That also tends to be the group most likely to use e-cigarettes.