Authors / CoAuthors
Edwards D.S | Darrah, T. | Lary, B. | Grosjean, E.
Abstract
<div>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).</div><div><br></div><div>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.</div><div><br></div>
Product Type
document
eCat Id
148930
Contact for the resource
Resource provider
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
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Digital Object Identifier
Keywords
- ( Project )
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- Offshore Energy Systems
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- Roebuck Basin
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- Noble gas isotopes
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- molecular composition
- theme.ANZRC Fields of Research.rdf
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- Isotope geochemistryOrganic geochemistryResource geoscience
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- Published_External
Publication Date
2024-08-09T05:33:26
Creation Date
2023-03-05T03:00:00
Security Constraints
Legal Constraints
Status
completed
Purpose
Data release of noble gas isotopes from selected wells in the Roebuck Basin.
Maintenance Information
asNeeded
Topic Category
geoscientificInformation
Series Information
Record 2024/36
Lineage
<div>GA contracted laboratory services from Smart Gas Sciences to analyse gases for noble gas isotopes.</div>
Parent Information
Extents
[-20.00, -18.00, 111.00, 120.00]
Reference System
GDA94 / geographic 2D (EPSG: 4283)
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Associations
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