To prevent earthquake triggering, pressure changes due to CO2 injection need to be limited

Vilarrasa and Carrera (1) dissent from our view (2) that pore pressure increases resulting from large-scale CO2 injection could potentially trigger earthquakes that would threaten long-term CO2 storage. Since our article appeared, the National Academy of Sciences (3) has expressed an even greater concern about large-scale carbon capture and storage (CCS), that “the large net volumes of injected fluids, may have potential for inducing larger seismic events.”