Product catalogue
Hyperspectral logging of middle Cambrian marine sediments with hydrocarbon prospectivity: a case study from the southern Georgina Basin, northern Australia
The Georgina Basin is a Neoproterozoic'Paleozoic basin that spans parts of the Northern Territory and Queensland in northern Australia. The basin is prospective for petroleum, phosphate and base metals (copper, lead and zinc). The Dulcie and Toko synclines in the southern part of the basin are prospective for petroleum, where a thick Cambro-Ordovician succession of marine carbonates hosts several source rocks and associated oil and gas shows. The key source rock units occur within the middle Cambrian Narpa Group including both the Thorntonia Limestone (Series 2 and 3) and the Arthur Creek Formation (Series 3). The base of the Arthur Creek Formation is characterised by organic-rich 'hot' shales (associated with a prominent gamma spike in well logs) that have been targeted by petroleum explorers for both conventional and unconventional oil and gas. For this study, hyperspectral logging data collected by HyLoggerTM instruments were evaluated from 13 wells in the southern Georgina Basin, including petroleum, mineral and stratigraphic wells. Formation boundaries are often (but not always) characterised by distinctive changes in mineralogy, as determined by spectral and X-ray diffraction data. Key source rock units in the southern Georgina Basin were characterised and mapped in terms of their mineralogy, and other spectral properties (e.g. short-wave infra-red 'SWIR' reflectance and spectral contrast). Interpretation of the hyperspectral data alongside wireline log data supports the differentiation of two organic-rich shale units within the Arthur Creek Formation, previously distinguished on the basis of biostratgraphy and well log data. The older shale unit in the Dulcie Syncline, is characterised by quartz and carbonate mineralogy. A younger shale unit, distributed across the eastern part of the Dulcie Syncline and the Toko Syncline, is characterised by quartz, carbonate and variable white-mica contents. Key associations are observed between HyLogger mineralogy and geophysical log data. Peaks in the gamma log intensity in the middle Cambrian sediments often correspond to elevated measured total organic carbon contents, decreased carbonate contribution, Short-Wave Infrared reflectance and spectral contrast, and relatively-increased proportions of white micas and quartz. This study demonstrates that HyLogging data can provide an improved understanding of the sedimentological, mineralogical and diagenetic characteristics, as well as associated spatial heterogeneity, of prospective hydrocarbon formations in sedimentary basins.
Simple
Identification info
- Date (Creation)
- 2016-07-31T00:00:00
- Date (Publication)
- 2017-01-09T15:00:00
- Date (Revision)
- 2017-11-09T04:48:06
- Date (Revision)
- 2019-04-09T02:35:27
- Date (Revision)
- 2019-05-03T02:46:49
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/100172
- Citation identifier
- Digital Object Identifier/http://dx.doi.org/10.1080/08120099.2016.1204625
- Cited responsible party
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Role Organisation / Individual Name Details Author Geoscience Australia
Author Ayling, B.F.
1 Author Huntington, J.
2 Author Smith, B.
3 Author Edwards, D.S.
4
- Status
- Point of contact
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Role Organisation / Individual Name Details Author Edwards, D.S.
Point of contact Commonwealth of Australia (Geoscience Australia)
Voice
- Spatial representation type
- Topic category
-
- Geoscientific information
Extent
Extent
))
- Maintenance and update frequency
- Not planned
Resource format
- Title
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Product data repository: Various Formats
- Website
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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
- Product
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Petroleum Geology
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- Australian and New Zealand Standard Research Classification: Fields of Research
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Earth Sciences
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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
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CC-BY
- Edition
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4.0
- Access constraints
- License
- Use constraints
- License
Resource constraints
- Title
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Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
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Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice
- OnLine resource
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Digital Object Identifier
Link to Publication
Resource lineage
- Statement
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Not supplied
- Hierarchy level
- Document
Metadata constraints
- Title
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Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
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urn:uuid/d35847ec-2931-47b5-ad9c-cb9f55793c2c
- Title
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GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
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Role Organisation / Individual Name Details Point of contact Edwards, D.S.
Commonwealth of Australia (Geoscience Australia)
Voice
Type of resource
- Resource scope
- Document
Alternative metadata reference
- Title
-
Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/100172
- Date info (Creation)
- 2016-05-04T11:09:51
- Date info (Revision)
- 2018-04-20T05:51:45
Metadata standard
- Title
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AU/NZS ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-3
- Title
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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
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Version 2.0, September 2018
- Citation identifier
- https://pid.geoscience.gov.au/dataset/ga/122551