De-risking Fluid Injection Across the “F10 Fault” System using 2D and 3D Seismic, Harvey, Western Australia

The Harvey study site, located in the Southern Perth Basin, forms a part of the CSIRO’s research hub into testing new technologies and methods for carbon-capture storage. Prior to drilling new injection and observation wells with downhole fiber optic technology at Harvey, reprocessing and interpretation of 2014 acquired Cookernup 3D seismic survey was carried out to improve subsurface characterisation of the “F10 Fault” and surrounding damage zone. This subsurface site characterization study was deemed necessary to derisking the planned fluid injection well locations and, to better understand the fault architecture for improved simulation modelling of fluid migration across the large Permian-Jurassic aged rift fault structures.

Pre-Stack Depth Migration (PSDM) reprocessing was successful in enhancing the imaging of the F10 fault structures, capturing additional complexity in the fault geometry such as relay-ramps, and showed new faults in the top 500m that were not previously identified. These insights improved the positioning of the planned injection/observations wells and will allow for better simulation modelling of cross-fault flow during injection experiments.