Can the injection and storage of CO2 cause cracks in the rocks?
A. CO2CRC geologists have studied the geology in the Otway Basin and particularly at Nirranda South for a number of years. The Nirranda South site was chosen for its geology, which is ideal for testing the geological storage of CO2. During the project, CO2CRC will inject CO2 into a depleted natural gas reservoir. Between 55 000 and 100 000 tonnes of CO2 will be injected into the reservoir, which is significantly less than the amount of natural gas that was extracted. This means that it is highly unlikely that the reservoir would be overpressurised, or that fractures would be formed that could allow the leakage of CO2.
