On December 2, 2015,
the Oklahoma Corporation Commission announced
the cessation of disposal operations in the Medford and Byron/Cherokee areas
after a swarm of earthquakes hit North Central Oklahoma on November 30, 2015,
including one with a 4.7 magnitude that occurred in the Medford area.
The Commission ordered
the closure of four wells within 3 miles of the earthquake activity in the
Byron/Cherokee area and imposed a net injection volume reduction of 25% to 50%
for 47 wells within 3 to 6 miles of the seismic activity. In the Medford area,
the Commission previously ordered the cessation of three disposal wells in
November 2015 following recent seismic activity in the region. The Commission also
declared that operational changes may affect 67 disposal wells within 10 to 15
miles of the earthquake activity in both areas in the event of future seismic
activity.
Written by Chloe Marie - Research Fellow
12/07/2015
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