The best of EcoWatch, right in your inbox. Sign up for our email newsletter!
University of Colorado Boulder Scientists Link 10,800-Foot-Deep Fracking Wastewater Well to More Than 200 Earthquakes
[Editor's note: This article was updated Aug. 1.]
A team of University of Colorado Boulder researchers began a seismic investigation after a May 31 earthquake. The researchers' information led the Colorado Oil and Gas Conservation Commission to request a 20-day halt to NGL Water Solutions' fracking wastewater injection operations.
NGL, formerly known as High Sierra Water Services, was given permission to resume its activities at a 10,800-foot-deep well a few weeks later. Anne Sheehan and her team found that the well is linked to more than 200 earthquakes, the geophysics professor in the CU Department of Geological Sciences told Boulder County Business Report. NGL made modifications to the well, cementing the bottom 400 feet of the well, and it is has come back into production at a lower rate of pressure and injection. CU continues to monitor the earthquake activity and has found it has decreased. The information from the study will help the researchers find out why some wells have earthquakes and some do not, and how to fix the wells that do have earthquakes, if possible.
Sheehan said the group found "quite a few" earthquakes with epicenters within two miles of the well.
Photo courtesy of Shutterstock
Two earthquakes—with magnitudes of 3.4 and 2.6—took place within mere miles of the well. Shemin Ge and Matthew Weingarten, also of CU, also found that activity within fracking wastewater injection wells likely caused earthquakes in central Oklahoma.
NGL operates 11 of the 29 fracking wastewater injection wells in Weld County, CO. When the Colorado Oil and Gas Conservation Commission allowed NGL to resume activities, it began injecting 7,500 barrels per day at maximum pressure.
"We’ll continue to closely monitor and accumulate all available information at this location,” Colorado Department of Natural Resources spokesman Todd Hartman told the Report, “and work with partners to continue understanding how best to limit and prevent potential seismic impacts related to deep injection generally.”
EcoWatch Daily Newsletter
Cutting out coal-burning and other sources of nitrogen oxides (NOx) from heavy industry, electricity production and traffic will reduce the size of the world's dead zones along coasts where all fish life is vanishing because of a lack of oxygen.
Methane levels in the atmosphere experienced a dramatic rise in 2019, preliminary data released Sunday shows.
In some states like West Virginia, coal mines have been classified as essential services and are staying open during the COVID-19 pandemic, even though the close quarters miners work in and the known risks to respiratory health put miners in harm's way during the spread of the coronavirus.
Renewable energy made up almost three quarters of all new energy capacity added in 2019, data released Monday by the International Renewable Energy Agency (IRENA) shows.