The 2023 Offshore Greenhouse Gas Storage Acreage Release is a key strategy of the Australian Government to reduce emissions and support Australia's resource sector. The GHG acreage release will provide companies the opportunity to explore for offshore carbon dioxide injection and storage locations. The 2023 GHG acreage release consists of 10 areas across the Bonaparte, Browse, Northern Carnarvon Basins, Perth, Otway, Bass and Gippsland Basins.

The 2023 Offshore Greenhouse Gas Storage Acreage Release is a key strategy of the Australian Government to reduce emissions and support Australia's resource sector. The GHG acreage release will provide companies the opportunity to explore for offshore carbon dioxide injection and storage locations. The 2023 GHG acreage release consists of 10 areas across the Bonaparte, Browse, Northern Carnarvon Basins, Perth, Otway, Bass and Gippsland Basins.

The Australian Petroleum Source Rocks Mapping project is a new study to improve our understanding of the petroleum resource potential of Australia's sedimentary basins. The Permian source rocks of the Cooper Basin, Australia's premier onshore hydrocarbon producing province are the first to be assessed for this project. Quantifying the spatial distribution and petroleum generation potential of these source rocks is critical for understanding both the conventional and unconventional hydrocarbon prospectivity of the basin. Source rock occurrence, thickness, quality and maturity are mapped across the basin and original source amount and quality maps prior to the onset of generation are calculated. Source rock property mapping results and basin specific kinetics are integrated with 1D thermal history models and a 3D basin model to create a regional multi-1D petroleum systems model for the basin. The modelling outputs quantify both the spatial distribution and total maximum hydrocarbon yield for ten source rocks in the basin. Monte Carlo simulations are used to quantify the uncertainty associated with hydrocarbon yield and to highlight the sensitivity of results to each input parameter. The principal source rocks are the Permian coals and carbonaceous shales of the Gidgealpa Group, with highest potential yields from the Patchawarra Formation coals. The total generation potential of the Permian section highlights the significance of the basin as a world class hydrocarbon province. The systematic workflow applied here demonstrates the importance of integrated geochemical and petroleum systems modelling studies as a predictive tool for understanding the petroleum resource potential of Australia's sedimentary basins.

Historical data concerning the operations and findings at the Coorabin coalfield between 1915 and 1937 has been compiled in this report.

Geoscience Australia's Oracle organic geochemical database comprises analytical results for samples relevant to petroleum exploration, including source rocks, crude oils and natural gases from both onshore and offshore basins. The data is non-confidential and available to the petroleum industry, research organisations and the public. The data are produced by a wide range of destructive analytical techniques conducted on samples submitted by industry under legislative requirements, as well as on samples collected by research projects undertaken by Geoscience Australia or other government agencies or institutions. Some of the results have been generated by Geoscience Australia's laboratory, whereas other data is compiled from service company reports, well completions reports and published papers. <b>Value: </b>These data comprise the raw organic geochemistry values generated for Australian source rocks, crude oil and natural gases and is the only public comprehensive database at the national scale. The raw data are used as input to other studies, such as petroleum systems modelling, resource assessments and national mapping projects. Derived datasets and value-add products are created based on calculated values and interpretation to provide information on the subsurface petroleum prospectivity of the Australian continent. The data collection aspires to build a national-scale understanding of Australia's oil and gas resources. <b>Scope: </b>This data collection is useful to government for evidence-based decision making on natural energy resources and the petroleum industry for de-risking conventional and unconventional exploration programs. Results for many of the oil and gas samples held in the Australian National Offshore Wells Data Collection are included in this database.

The northern Houtman Sub-basin is an under-explored region of Australia’s western continental margin. It is located at the transition between the non-volcanic margin of the northern Perth Basin and the volcanic province of the Wallaby Plateau and lies adjacent to the Wallaby-Zenith Transform Margin. In 2014, Geoscience Australia acquired new 2D seismic data (GA-349, 3455 km) across the northern Houtman Sub-basin to assess its hydrocarbon prospectivity. Previous studies of the Houtman Sub-basin indicated that en-echelon basin bounding N-NW trending faults are associated with the Permian half graben complex, however, it was not known if this structural style continued into the northern area of the Houtman Sub-basin. This study integrated interpretation of the recently acquired survey, with regional interpretation of the Houtman Sub-basin. This was further supported by well data and geophysical modelling and a regional 2D structural and stratigraphic interpretation developed. Structural mapping was done for the basement, Early Triassic (Woodada Formation) and Early Jurassic (Eneabba Formation). The basement structure of the northern Houtman Sub-basin is controlled by a series of large en-echelon NW-SE trending SW dipping faults, some of which have a throw of more than 10 km. These basement-involved faults control a series of Permian half graben separated by transfer zones and fault ramps. This basement architecture is similar to the inboard part of the southern Houtman Sub-basin, however the structures are larger. The Early Triassic and Early Jurassic faults trend NW-SE similar to the basement-involved faults, however major faults within the Jurassic succession lie about 50 km to the west of the Permian faults. Interpretation of the northern Houtman Sub-basin reveals a structurally complex basin containing a wide range of structural and stratigraphic traps at several stratigraphic levels. Potential plays have been identified in the upper Permian, Triassic and Jurassic successions. They include large stratigraphic plays in the Upper Permian/Lower Triassic, rollover anticlines within the Lower Triassic and Jurassic, and fault propagation folds and fault block plays in the Jurassic. Extended Abstract presented at the 2018 First Australasian Exploration Geoscience Conference (https://www.aig.org.au/events/first-australian-exploration-geoscience-conference/)

<p>A regional mapping program conducted by Geoscience Australia addressed stratigraphic and structural aspects of exploration risk within the Triassic succession of the Roebuck Basin and parts of the adjacent sub-basins (central North West Shelf, Figure 1). <p>Seismic horizons of regional significance were mapped using 2D and 3D seismic surveys. Seismic survey coverage is shown in Figure 1. 2D surveys include regional deep surveys such as AGSO s110, AGSO s120, and PGS New Dawn. 3D surveys include Admiral, Beagle, CNOOC, Curt, Lord, Naranco, Polly, Whitetail, and a 5 x 5 km extract (used with permission) from the TGS Capreolus MC3D. Synthetic seismograms (Nguyen et al., 2019) were used to tie seismic horizons to wells. <p>The mapped horizons are placed within a regional tectonostratigraphic framework by Abbott et al. (2019, their Figure 2). This data pack comprises seismic horizon grids and isochron grids generated from the TR10.0_SB (base Triassic), TR17.0_SB (Mid–Triassic), and J10.0_SB (top Triassic) seismic horizons (Figure 2). Fault maps compiled at the TR10.0 _SB and J10.0_SB are also included.

All available processed seismic data and well completion reports relevant to the 2009 Acreage Release. Datasets available in Geoframe, Kingdom and Landmark workstation formats.

All available processed seismic data and well completion reports relevant to the 2007 Acreage Release. Datasets available in Geoframe, Kingdom and Landmark workstation formats.

Regular release of offshore acreage, part of the Australian Government strategy to encourage investment in petroleum exploration.