Encana (ECA) halted drilling operations due to a 3.2 magnitude earthquake in Kingfisher County, Oklahoma recently, according to news reports. This was followed early the next morning by a 3.9 magnitude earthquake, which "was observed near the well while the work was still halted." This was "the strongest seismologists have ever observed related to well completion work in Oklahoma", if it was caused by the offsetting Encana well completion.
Encana stock is down recently, possibly because of the news reports of the earthquake. Note the matching performance for most of the past