Geological characterisation of the Otway project pilot site: What a difference a well makes

AbstractThis paper summarises the modelling approach and lessons learnt at the CO2CRC Otway Project Pilot Site and how uncertainties were significantly reduced by utilising a new CO2 injection well for multi-disciplinary formation evaluation. From subsequent data analysis porosity/permeability relationships were better constrained by a depositional facies model. With a better informed geological model, the dynamic simulation results produced an excellent history match with pre and post production data from the depleted gas field. Further more, prediction of the CO2 plume direction and shape, and arrival times of the CO2 at the monitoring well, may now be regarded with a higher degree of confidence