Product catalogue
Geochemical evidence for a new Triassic petroleum system in Australia - APPEA 2021
The unexpected discovery of oil in Triassic sedimentary rocks of the Phoenix South 1 well on Australia’s North West Shelf (NWS) has catalysed exploration interest in pre-Jurassic plays in the region. Subsequent neighbouring wells Roc 1–2, Phoenix South 2–3 and Dorado 1–3 drilled between 2015 and 2019 penetrated gas and/or oil columns, with the Dorado field containing one of the largest oil resources found in Australia in three decades. This study aims to understand the source of the oils and gases of the greater Phoenix area, Bedout Sub-basin using a multiparameter geochemical approach. Isotopic analyses combined with biomarker data confirm that these fluids represent a new Triassic petroleum system on the NWS unrelated to the Lower Triassic Hovea Member petroleum system of the Perth Basin. The Bedout Sub-basin fluids were generated from source rocks deposited in paralic environments with mixed type II/III kerogen, with lagoonal organofacies exhibiting excellent liquids potential. The Roc 1–2 gases and the Phoenix South 1 oil are likely sourced proximally by Lower–Middle Triassic TR10–TR15 sequences. Loss of gas within the Phoenix South 1 fluid due to potential trap breach has resulted in the formation of in-place oil. These discoveries are testament to new hydrocarbon plays within the Lower–Middle Triassic succession on the NWS.
Simple
Identification info
- Date (Creation)
- 2021-04-07
- Date (Publication)
- 2021-07-12T05:17:50
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/140155
Identifier
- Codespace
-
Digital Object Identifier
- Cited responsible party
-
Role Organisation / Individual Name Details Author Grosjean, E.
Author Edwards, D.
MEG Internal Contact Author Rollet, N.
MEG Internal Contact Author Boreham, C.
MEG Internal Contact Author Nguyen, D.
MEG Internal Contact Author Buckler, T.
MEG Internal Contact
- Purpose
-
APPEA 2021 presentation
- Status
- Completed
- Point of contact
-
Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Grosjean, E.
MEG Internal Contact Resource provider Minerals, Energy and Groundwater Division
External Contact
- Spatial representation type
- Topic category
-
- Geoscientific information
Extent
Extent
))
- Maintenance and update frequency
- As needed
Resource format
- Title
-
Product data repository: Various Formats
- Website
-
Data Store directory containing the digital product files
Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes
- theme.ANZRC Fields of Research.rdf
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Organic Geochemistry
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Isotope Geochemistry
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Exploration Geochemistry
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EARTH SCIENCES
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- Place
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Roebuck Basin
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- Place
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Bedout Sub-basin
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- Place
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Greater Phoenix Area
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- Theme
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Biomarkers
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- Theme
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Petroleum systems
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- Keywords
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Published_External
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Resource constraints
- Title
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Creative Commons Attribution 4.0 International Licence
- Alternate title
-
CC-BY
- Edition
-
4.0
- Access constraints
- License
- Use constraints
- License
Resource constraints
- Title
-
Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
-
Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice
- OnLine resource
-
Download the presentation (pdf) [16.0 MB]
Download the presentation (pdf) [16.0 MB]
- Distribution format
-
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pdf
-
- OnLine resource
-
Download the presentation (mp4) [790.2 MB]
Download the presentation (mp4) [790.2 MB]
- Distribution format
-
-
mp4
-
- OnLine resource
-
Download the extended abstract (pdf) [1.8 MB]
Download the extended abstract (pdf) [1.8 MB]
- Distribution format
-
-
pdf
-
Resource lineage
- Statement
-
Not supplied.
Metadata constraints
- Title
-
Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
-
urn:uuid/2dd71d38-5ef0-4807-b3c5-fdd2f10cabf5
- Title
-
GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
-
Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Point of contact Grosjean, E.
MEG Internal Contact
Type of resource
- Resource scope
- Document
- Name
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GA publication: APPEA 2021 presentation
Alternative metadata reference
- Title
-
Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/140155
- Date info (Creation)
- 2019-04-08T01:55:29
- Date info (Revision)
- 2019-04-08T01:55:29
Metadata standard
- Title
-
AU/NZS ISO 19115-1:2014
Metadata standard
- Title
-
ISO 19115-1:2014
Metadata standard
- Title
-
ISO 19115-3
- Title
-
Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
-
Version 2.0, September 2018
- Citation identifier
- https://pid.geoscience.gov.au/dataset/ga/122551