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Noble Gas Isotopes of Natural Gases from the Bedout Sub-basin, Roebuck Basin, Australia. Data Release

Created 16/10/2025

Updated 16/10/2025

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The Roebuck Basin on Australia’s offshore north-western margin is the focus of regional energy exploration activity. Drilling in the Roebuck Basin resulted in oil and gas discoveries at Phoenix South 1 (2014), Roc 1 (2015–2016) and Dorado 1 (2018) in the Bedout Sub-basin (Figure 1‑2) and demonstrated the presence of a petroleum system in Lower Triassic strata. These discoveries have been evaluated for development and production with infill drilling at Roc 2 (2016), Phoenix South 2 (2016), Phoenix South 3 (2018), Dorado 2 (2019), and Dorado 3 (2019). Recent drilling by Santos (2022) has resulted in the discovery of oil at Pavo 1 (2022) and hydrocarbon shows at Apus 1 (2022).

To complement this industry work, Geoscience Australia’s Offshore Energy Systems program produces pre-competitive information to assist with the evaluation of the energy and resource potential of the central North West Shelf, including both hydrogen and helium resources, and to attract exploration investment to Australia. As part of this program, determination of the molecular and noble gas isotopic composition of natural gases from selected petroleum wells in the Roebuck Basin were undertaken by Smart Gas Sciences, under contract to Geoscience Australia, with results from these analyses being released in this report. This report provides additional gas data to determine the sources of natural gases in the Roebuck Basin and build on previously established gas-gas 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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Field Value
Title Noble Gas Isotopes of Natural Gases from the Bedout Sub-basin, Roebuck Basin, Australia. Data Release
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/4b409c7a-47db-4b80-acb6-d710afec7ce7
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 06/08/2024
Geospatial Coverage
Map data © OpenStreetMap contributors
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Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Noble Gas Isotopes of Natural Gases from the Bedout Sub-basin, Roebuck Basin, Australia. Data Release". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/noble-gas-isotopes-of-natural-gases-from-the-bedout-sub-basin-roebuck-basin-australia-data-rele