Surat Basin

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Characterisation of Current Groundwater Uses in the Surat and Bowen Basins

Centre for Water in the Minerals Industry (University of Queensland)
CSG companies and the Queensland Government collect data about the volumes of various types of groundwater use. This data helps estimate groundwater extraction volumes used in groundwater models which inform decisions regarding the management of the industry and plan water allocations. For example, the Queensland Government model is used to identify which private water bores are likely to have declining groundwater levels as a result of CSG industry activities and compensation for water loss is negotiated between the companies and...

Recharge estimation in the Surat Basin

Centre for Water in the Minerals Industry (University of Queensland)
School of Earth and Environmental Sciences (University of Queensland)
The amount of water (flux) entering an aquifer as recharge is a critical factor in determining how water table levels change, the sustainable yields for groundwater extraction, and the impact of extractive industries on groundwater availability. However, the processes that govern this flux remain difficult to quantify, and are therefore considerable sources of uncertainty in modelling the groundwater balance and conducting impact assessments. Due to the geological complexity of the Surat and Bowen Basins, recharge can occur via multiple pathways...

Bioregional Assessments Programme

CSIRO (Australian Government)
Geoscience Australia (Australian Government)
Bureau of Meteorology (Australian Government)
Department of the Environment (Australian Government)
The Australian Government is undertaking a programme of bioregional assessments in order to better understand the potential impacts of coal seam gas and large coal mining developments on water resources and water-related assets. The science-based studies follow a methodology to develop multi-layered records of the natural environment in specific bioregions. The studies will analyse the ecology, hydrology, geology and hydrogeology of bioregions, with explicit assessment of potential direct, indirect and cumulative impacts on water resources both above and below ground...

Geological framework model for the Surat Cumulative Management Area (Surat and southern Bowen Basin)

School of Earth Sciences (University of Queensland)
CSG companies and regulatory agencies use geological models in decision-making processes regarding the industry. The geological models used by each organisation can vary based on data availability and interpretation and are often focus on specific locations relevant to company operations. This project aims to develop a consistent and unified Surat Basin framework model to provide an improved shared understanding of the geology of the basin. It will provide a regional scale reference model for all users. This model will be...

A Water Chemistry Atlas for CSG Fields: Discovering value beyond baseline monitoring (Phase 1)

Centre for Water in the Minerals Industry (University of Queensland)
School of Information Technology and Electrical Engineering (University of Queensland)
A technical feasibility study was completed to determine if there is sufficient groundwater quality data available to develop a Water Chemistry Atlas with the capability to address key technical questions regarding regional water quality trends and provide valuable information to government, industry and the community. Key steps included: Developing a test database structure for the Atlas and use of a subset of data from the Office of Groundwater Impact Assessment (OGIA) water quality database for trial purposes. using a range...

Integrated Sequence Stratigraphy to Improve Technically Recoverable Resources Estimation and Flow Modelling

Centre for Coal Seam Gas (University of Queensland)
The connectivity of coal beds is an important consideration for the economics and feasibility of coal seam gas production. The areal extent of coal is related to the environment of deposition and factors affecting preservation. It is critical to understand the cyclicity within the succession and the lateral shifts in coal forming environments over time The exploratory phase of the CCSG Seismo-Stratigraphic Interpretation pilot project successfully defined a skeleton for a chronostratigraphic framework. The results show differences with previous (pragmatic)...

Conceptualisation of the Walloon Coal Measures beneath the Condamine Alluvium

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...

Groundwater connections between the Walloon Coal Measures and the Alluvium of the Condamine River

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...

Spatial analysis of coal seam water chemistry

WorleyParsons
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.

Geological Structures Project

Office of Groundwater Impact Assessment (Queensland Government)
Geoscience Australia (Australian Government)
The objective of this project is to better understand the influence of geological structures on regional groundwater flow dynamics. The project will draw upon existing information and employ a variety of techniques aimed at identifying and assessing new geological structures as well as assessing current structural mapping and its potential influence on groundwater flow. The initial phase of the project will involve updating the mapping of geological structures and a preliminary assessment of inferred hydraulic characteristics of those structures.

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