The South West Hub project is now proceeding to further reduce its uncertainties regarding the containment potential of the upper and lower confining layers of the Lesueur Formation through a well drilling, coring and logging program. Constraints on injectivity, compartmentalisation and vertical connectivity across the Lesueur and Eneabba formations are currently highly uncertain. In anticipation of the drilling of Harvey-5, an improved understanding of the injectivity and residual trapping properties of the Wonnerup is required. This project aims to examine containment processes at SW Hub project by:
- Simulating residual trapping, vertical sweep efficiency and the influence of internal barriers to CO2 migration within the Lesueur Formation, and
- Configuring well-tests that enable the measurement of appropriate parameters to validate models of injected CO2 movement.
This work is based on the testing of Wonnerup samples from Harvey-2, -3 and -4 and is complementary to work being done in other ANLEC projects and commercially by the SW Hub.