Fault stability and sustainable fluid pressures for CO2 storage in the Cooper Basin
Fault stability require the determination of fault orientations, pore pressures and in-situ stresses to assess potential CO2 storage.
CO2 capture, utilisation and storage (CCUS) in deep saline formations or depleted hydrocarbon reservoirs requires estimates of sustainable fluid pressures that will not induce fracturing or create fault permeability that could lead to CO2 escape.
Analyses of fault stability require the determination of fault orientations, ambient pore fluid pressures and in situ stresses in a potential storage site. This project will combine new and accurate measurements of vertical and horizontal stress magnitudes and fluid pressures from petroleum well and drilling data with structural interpretation of 3D seismic reflection data for potential CO2 storage locations in the Cooper Basin.
The outcome of this project will be the visualisation of geomechanical risking parameters for faults associated with target reservoirs for CCUS (e.g. slip and dilation tendency), and thus contribute to the broader evaluation of the Cooper Basin as a major hub for CO2 storage.