2018 SEG International Exposition and Annual Meeting,
Anaheim, California, USA
2018. Society of Exploration Geophysicists
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A seismic monitoring case study is documented for stimulation of multiple wells completed in the Lower Montney Shale. A network of 4 broadband stations and 1 accelerometer were deployed and recorded numerous minor seismic events with moment magnitude between 0.5 and 2.8. Sequential hydraulic fracture stages progressively activated several parallel, critically-stressed faults, resulting in induced seismicity during the injection. The case study provides key insights about the spatial and temporal characteristics of the seismogenic faults, and the relationship to fracturing operations. Source mechanisms show a predominantly strike-slip mechanism consistent with lineaments apparent from the seismic locations. The case study highlights observations during multiple fault activation with progressive fault activation and the corresponding ground motion, and provides seismic observations conducive to effective mitigation following a traffic light protocol.
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