The number of Oklahoma earthquakes registering a magnitude 3.0 or greater has declined for the third consecutive year after state regulators began directing oil and natural gas producers to close some wells and reduce injection volumes in others. The number …
Scientists may have found previously unmapped faults in Oklahoma that could be contributing to a sharp increase in induced earthquakes in the state, according to a report on a study that used magnetic imaging to explore the rock formations below …
Busted bricks and cracked windows were revealed Monday after some of those most powerful earthquakes in Oklahoma in the past year rattled the northern part of the state. Oklahoma residents have gotten used to feeling rumbles from a spike in …
The disposal of wastewater from oil and gas production by injecting it deep into the ground has been linked to a dramatic increase in earthquake activity in Oklahoma since 2009. Injection rates have declined recently because of regulatory actions and …
Oklahoma transportation officials have installed a monitoring service to help prioritize bridge inspections after earthquakes. The ShakeCast software is the final stage in a two-year contract with the private firm Infrastructure Engineers Inc., The Oklahoman reported. The U.S. Geological Survey …
Oklahoma’s largest recorded earthquake affected geological structures both above and below ground last year, but experts caution there still is much that scientists don’t know the 5.8-magnitude temblor that struck near Pawnee. Ten separate academic studies into the Sept. 3 …
A federal judge has dismissed a lawsuit against three oil and gas companies over Oklahoma’s ongoing earthquakes. The lawsuit, filed last year on behalf of Sierra Club Oklahoma, asked for a reduction of production waste from Devon Energy Corp., Chesapeake …
The Environmental Protection Agency has told Oklahoma regulators to do more to protect the state from a surge in earthquake activity that scientists have linked to the underground disposal of oil and gas wastewater. An EPA administrator sent a letter …
Residents of a town hit by Oklahoma’s strongest earthquake have filed a class-action lawsuit against dozens of energy companies, accusing them of triggering destructive temblors by injecting wastewater from oil and gas production underground. Pawnee residents filed the suit Thursday …
A magnitude 5.0 earthquake centered near one of the world’s key oil hubs brought down building facades and shattered windows in a central Oklahoma city, rendering century-old buildings unsafe and raising concerns about key infrastructure. As the sun rose Monday, …