Displaying 1 - 10 of 14
Klohn Crippen Berger
This activity undertook a comprehensive review of all existing data regarding the hydrogeology of the Condamine Alluvium and the underlying and flanking sections of the Walloon Coal Measures. It developed a new interpretation of these formations and assembled a three-dimensional block model. The findings of this activity provide an improved understanding of the structure of the Walloon Coal Measures and their relationship with the Condamine Alluvium, and also highlight priorities for future research. Outputs of this activity have been used...
Individual consultant
Prepared for the Central Downs Irrigators Limited , this report reviews existing information about the geology and hydrogeology of the Condamine Alluvium and the underlying Walloon Coal Measures to assess the potential for connectiviety between the two formations. A detailed examination of available data on bores in the Cecil Plains area notes that water levels in the alluvium are lower than those in the Walloon Coal Measures, and that Water quality information points to a transfer of water from the...
Connected Waters Initiative Research Centre (University of New South Wales)
The program will characterise both the hydraulics and chemistry (major anions, cations, stable isotopes) of low permeability strata with the view to better estimating the potential impact of water derived from these strata on groundwater quality and regional-scale aquifer dynamics. Various hydraulic, chemical and geophysical methods (e.g. microgravity methods for measuring subtle changes in water content of geologic materials) will be utilised and compared. Major advances in hydrochemistry will require techniques that allow better representative samples to be obtained (Glynn...
Connected Waters Initiative Research Centre (University of New South Wales)
The new centrifuge facility is one of only two of its kind in the world, providing capability for assessing aquitards. Aquitards, or low permeability sediment or rock that that can store water, are critical to disconnect or partially disconnect flow systems. Experimental testing of pressure changes and pore water quality in large drill cores can be completed in less time at accelerated gravity in the centrifuge. This innovative new assessment technique can complement and improve site assessments and numerical modelling...
The analysis consolidates existing knowledge about the mineralogical, hydrogeological and geochemical properties of these formations and provides new information about their distinguishing chemical features. The findings provide an enriched understanding of baseline conditions in these formations, and will be invaluable in the design and interpretation of future groundwater monitoring activities. A new database, which integrates all publicly available groundwater quality data for Queensland (as at March 2011) was constructed as part of this activity.
Office of Groundwater Impact Assessment (Queensland Government)
Arrow Energy
This project seeks to improve understanding of the hydrogeological relationships and potential for interconnectivity between the Condamine Alluvium (CA), the underlying Walloon Coal Measures (WCM) and other associated formations. Outputs from the project will improve the representation of the formations in future groundwater modelling that will support the revision of or the Surat UWIR in December 2015. The project involves three parallel streams: field investigations, system reconceptualisation, and sub-regional modelling and hypothesis testing.
Office of Groundwater Impact Assessment (Queensland Government)
CSIRO (Australian Government)
The objective of this project is to improve the understanding of aquifer connectivity between the WCM, the overlying Springbok Sandstone and the underlying Hutton Sandstone. Outputs will directly contribute to the regional re-conceptualisation of the groundwater system that will in turn underpin the preparation of the new regional groundwater flow model in 2015. The project includes evaluations of vertical hydraulic permeability, distribution and thickness, geological structures, and external factors such as poorly constructed bores and wells.
Origin Energy
Suite of interconnectivity studies including centrifuge permeameter analysis at UNSW/NCGRT to determine vertical permeabilities and Quarts Helium diffusion studies at CSIRO to determine insitu vertical hydraulic flow velocity.
This study is to assess the magnitude and extent of aquifer connectivity to assist understanding the long term hydraulic behaviour of the Walloon Coal Measures (WCM) and adjacent formations.
Define aquifer connectivity and relevance to the impact of coal seam gas and coal mining on water resources. Aquifer connectivity will be discussed from a geometric and hydraulic viewpoint.