ISRM Regional Symposium - 7th Asian Rock Mechanics Symposium,
2012. Korean Society for Rock Mechanics. Permission to distribute - International Society for Rock Mechanics
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The importance of rock mechanics associated with geological storage of CO
2 (GCS) is now widely recognized among GCS stakeholders, especially with respect to the potential for triggering notable (felt) seismic events and how such events could impact the long-term integrity of a CO
2 repository (as well as how it could impact the public perception of GCS). To date, no notable seismic event has been reported from any of the current CO
2 storage projects, although unfelt microseismic activities have been detected by geophones. However, potential future commercial GCS operations from large power plants will require injection at a much larger scale. For such large-scale injections, a staged, learn-as-you-go approach is recommended, involving a gradual increase of injection rates combined with continuous monitoring of geomechanical changes, as well as siting beneath a multiple layered overburden for multiple flow barrier protection, should an unexpected deep fault reactivation occur.
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