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Noble Gas Isotopes of Natural Gases from the Shipwreck Trough, Offshore Otway Basin, Victoria, Australia. Data Release

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Created 14/01/2025

Updated 14/01/2025

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A regional hydrocarbon prospectivity assessment has been undertaken of the offshore Otway Basin by the Offshore Energy Systems Section. This program was designed to produce pre-competitive information to assist with the evaluation of the hydrocarbon resource potential of the offshore Otway Basin and attract exploration investment to Australia. The inboard part of the basin is an established hydrocarbon province with onshore and shallow-water offshore discoveries, whereas the outboard deep-water region, where water depths range from 500 to 6300 m, is comparatively underexplored and considered a frontier area.

As part of this program, molecular and noble gas isotopic analyses were undertaken by Smart Gas Sciences, under contract to Geoscience Australia on available gas samples from the Waarre Formation in the Shipwreck Trough in the offshore eastern Otway Basin, with data from these analyses being released in this report. This report provides additional compositional information for gases in the Waarre Formation reservoirs and builds on previously established gas-gas correlations and gas-oil correlations. Noble gas isotopic data can be used in conjunction with carbon and hydrogen isotopic data to determine the origin of both inorganic and organic (hydrocarbon) gases. This information can be used in future geological programs to determine the source and distribution of hydrogen and helium in natural gases and support acreage releases by the Australian Government.

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Title Noble Gas Isotopes of Natural Gases from the Shipwreck Trough, Offshore Otway Basin, Victoria, Australia. Data Release
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/bc398f6a-0e70-4652-9c4e-eac1cbf11202
Contact Point
Geoscience Australia
clientservices@ga.gov.au
Reference Period 01/08/2024
Geospatial Coverage {"type": "Polygon", "coordinates": [[[144.0, -39.0], [140.0, -39.0], [140.0, -38.0], [144.0, -38.0], [144.0, -39.0]]]}
Data Portal data.gov.au