The oil wastewater disposal well near the epicenter of Oklahoma's largest recorded earthquake was drilled too deep, a mistake that some think can lead to earthquakes.
More than 200 disposal wells for drilling wastewater in Oklahoma have cut their volumes or reduced their depth under directives from regulators trying to address the state's earthquake swarms.
OKLAHOMA CITY -- Continental Resources Inc. founder, chairman and CEO Harold Hamm says he wasn't trying to bully Oklahoma's state seismologist when he sought a meeting in 2013 but simply trying to learn what proof the scientist had for saying hydraulic fracturing was causing earthquakes.
Texas oil and gas regulators have turned down two permits for waste disposal wells this year under the state's new rules aimed at preventing man-made earthquakes, amid a growing debate about the role of energy production in triggering seismic events.
The earthquakes displayed were located in Oklahoma and occurred from Jan. 2, 2008, until Jan. 15, 2015, based on Oklahoma Geological Survey information. The earthquakes are a minimum 2.0 magnitude. Click map to link to animation. Map courtesy of USGS.
A surge in seismic activity is occurring around the U.S., and many top scientists are pointing at injection of waste from drilling and hydraulic fracturing as a possible culprit.