A significant earthquake in Oklahoma will result in the shutdown of injection wells close to the epicenter, news reports say. From the Washington Post:
"A record-tying earthquake in the edge of Oklahoma’s key energy-producing areas rattled the Midwest from Nebraska to northern Texas on Saturday, and it probably will bring fresh attention to the practice of disposing oil and gas-field wastewater deep underground.
"The United States Geological Survey said a 5.6-magnitude earthquake happened at 7:02 a.m. Saturday in north-central Oklahoma, on the fringe of an area where regulators had stepped in to limit wastewater disposal. That temblor matches a November 2011 quake in the same region."
The full story is here.