This report was commissioned by the Department of the Environment and Energy and was prepared by CSIRO.
About this document:
This report documents methods and workflows that have been developed to improve the characterisation of faults and their hydraulic properties, and how this informs regional scale groundwater flow models. It provides an example of how the approaches from these research reports can be integrated using the Gloucester Basin, NSW, as a case study area. The integrated analysis demonstrates techniques for investigating faults from local to regional scale, involving both field work and desktop subsurface studies.
The report describes:
- Some methodologies for assessing fault properties in coal seam gas reservoirs and their impact on local and regional groundwater flow; and
- numerical modelling based investigations of faults at regional scale and their influence on groundwater flow and solute migration from deep systems to shallow aquifers and surface water.