The use of dynamic models to evaluate potential large-scale CO2 storage in the Gippsland Basin, Victoria, Australia

A specific workflow to identify sites of sustaining CO2 injection rates of 1 Mt/a for decades was applied to the Gippsland Basin. Dynamic simulations attained injection rates of about 0.4-10 Mt/a (extreme cases). Permeability was the most important parameter determining injectivity. Total injected CO, ranged from 10-34 Mt up to 130-240 Mt. Without a portion of the offshore, injectivity and capacity are reduced considerably. At the end of the injection period, modeled overpressure at the seal is less than retention pressures. In some cases, CO2 does not reach the seal, even after 1000 yrs. In other cases, seal is reached after the pressure begins to decline. (C) 2013 The Authors. Published by Elsevier Ltd. Open access under CC BY-NC-ND license. Selection and/or peer-review under responsibility of GHGT