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Figure1 – Magnitude vs. distance plot from a multi-stage hydraulic stimulation job monitored from a borehole for microseismic activity. Different colors represent event sets from different stages. Most of the stages generate microseismic event that predictably populate the graph (i.e. lower magnitude events can be detected near to the monitor well while farther away from the monitor well only relatively higher magnitudes event can be detected). Stages yellow, cyan and, especially, stage red suggest fault reactivation due to their higher magnitude, as compared to magnitudes from other stages. Magnitude and distance increase respectively in the direction pointed by the arrows.
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Figure1 – Magnitude vs. distance plot from a multi-stage hydraulic stimulation job monitored from a borehole for microseismic activity. Different colors represent event sets from different stages. Most of the stages generate microseismic event that predictably populate the graph (i.e. lower magnitude events can be detected near to the monitor well while farther away from the monitor well only relatively higher magnitudes event can be detected). Stages yellow, cyan and, especially, stage red suggest fault reactivation due to their higher magnitude, as compared to magnitudes from other stages. Magnitude and distance increase respectively in the direction pointed by the arrows.