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Does the Phoenix South 1 oil represent an extension of the Lower Triassic petroleum system of the Perth Basin?

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Created 13/01/2025

Updated 13/01/2025

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In 2014, the surprise discovery of oil in the well Phoenix South 1 on Australia’s North West Shelf (NWS) heralded the Bedout Sub-basin as Australia’s new petroleum province. The well had initially targeted gas in Triassic reservoirs of the Keraudren Formation and Locker Shale but unexpectedly encountered oil instead. This has fuelled a revival of exploration in the area with subsequent wells Roc 1, Roc 2, Phoenix South 2 and Dorado 1 all successful in penetrating hydrocarbon columns. The Phoenix South 1 accumulation is significant as it demonstrates the occurrence of an effective oil-prone source rock within the Lower–Middle Triassic for the first time on the NWS. It also raised the possibility that a source rock analogue to the Hovea Member of the Lopingian–Lower Triassic Kockatea Shale, a well-established source of oil and gas in the northern Perth Basin, may also be effective on the NWS. In order to understand the origin of the Phoenix South 1 accumulation, its geochemical composition was compared to those of Triassic-sourced oils from the Perth Basin and petroleum fluids from the neighbouring Browse Basin, and Beagle and Dampier sub-basins.

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Title Does the Phoenix South 1 oil represent an extension of the Lower Triassic petroleum system of the Perth Basin?
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/3c8f1e82-ae33-44b0-ba7f-c7923ff30285
Contact Point
Geoscience Australia
clientservices@ga.gov.au
Reference Period 04/05/2018
Geospatial Coverage {"type": "Polygon", "coordinates": [[[117.1055, -20.4682], [127.6523, -20.4682], [127.6523, -10.8333], [117.1055, -10.8333], [117.1055, -20.4682]]]}
Data Portal data.gov.au