US mid-continent seismicity linked to high-rate injection wells

US mid-continent seismicity linked to high-rate injection wells
Boulder CO (SPX) Jun 22, 2015 - A dramatic increase in the rate of earthquakes in the central and eastern U.S. since 2009 is associated with fluid injection wells used in oil and gas development, says a new study by the University of Colorado Boulder and the U.S. Geological Survey. The number of earthquakes associated with injection wells has skyrocketed from a handful per year in the 1970s to more than 650 in 2014, acco ... morehttp://www.oilgasdaily.com/reports/US_mid_continent_seismicity_linked_to_high_rate_injection_wells_999.html