Petrophysical characterisation of the Neoproterozoic and Cambrian successions in the Officer Basin

The Neoproterozoic–Paleozoic Officer Basin, located in South Australia and Western Australia, remains a frontier basin for energy exploration with significant uncertainty due to a paucity of data. As part of Geoscience Australia’s Exploring for the Future (EFTF) program, the objective of this study is to derive the petrophysical properties and characterise potential reservoirs in the Neoproterozoic–Cambrian sedimentary succession in the Officer Basin through laboratory testing, and well log interpretation using both conventional and neural network methods.


Laboratory measurements of forty-one legacy core samples provide the relationships between gas permeability, Klinkenberg corrected permeability, and nano-scale permeability, as well as grain density, effective and total porosity for various rock types. Conventional log interpretation generates the volume fraction of shale, effective and total porosity from gamma ray and lithology logs. Self-organising map (SOM) was used to cluster the well log data to generate petrophysical group/class index and probability profiles for different classes. Neural network technology was employed to approximate porosity and permeability from logs, conventional interpretation results and class index from SOM modelling.


The Neoproterozoic-Cambrian successions have the potential to host both conventional and tight hydrocarbon reservoirs. Neoproterozoic successions are demonstrated to host mainly tight reservoirs with the range in average porosity and geometric mean permeability of 4.77%-6.39% and 0.00087-0.01307 mD, respectively, in the different sequences. The range in average porosity and geometric mean permeability of the potential Cambrian conventional reservoirs is 14.54%-26.38% and 0.341-103.68 mD, respectively. The Neoproterozoic shales have favourable sealing capacities. This work updates the knowledge of rock properties to further the evaluation of the resource potential of the Officer Basin.


Published in The APPEA Journal 2022


<b>Citation:</b>

Wang Liuqi, Bailey Adam H. E., Carr Lidena K., Edwards Dianne S., Khider Kamal, Anderson Jade, Boreham Christopher J., Southby Chris, Dewhurst David N., Esteban Lionel, Munday Stuart, Henson Paul A. (2022) Petrophysical characterisation of the Neoproterozoic and Cambrian successions in the Officer Basin. <i>The APPEA Journal</i><b> 62</b>, 381-399.


https://doi.org/10.1071/AJ21076

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Identification info

Date (Creation)
2021-12-10
Date (Publication)
2023-06-22T04:51:49
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/146053

Cited responsible party
Role Organisation / Individual Name Details
Author

Wang, L.

 MEG Internal Contact
Author

Bailey, A.

 MEG Internal Contact
Author

Carr, L.

 MEG Internal Contact
Author

Edwards, D.

 MEG Internal Contact
Author

Khider, K.

 MEG Internal Contact
Author

Anderson, J.

 MEG Internal Contact
Author

Boreham, C.

 MEG Internal Contact
Author

Southby, C.

 MEG Internal Contact
Author

Dewhurst, D.

 External Contact
Author

Esteban, L.

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Author

Munday, S.

 Chemostrat Australia Pty. Ltd. External Contact
Author

Henson, P.

 MEG Internal Contact
Publisher

CSIRO

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The APPEA Journal

Issue identification

62 (1) 2022

Page

381-399

Purpose

Article submitted to The APPEA Journal 2022

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Completed
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Commonwealth of Australia (Geoscience Australia)

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Wang, L.

 MEG Internal Contact
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Minerals, Energy and Groundwater Division

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  • Geoscientific information

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W


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As needed

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Title

Product data repository: Various Formats

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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

theme.ANZRC Fields of Research.rdf

  • EARTH SCIENCES

  • GEOPHYSICS

Place

  • Officer Basin

Stratum

  • Neoproterozoic

Stratum

  • Cambrian

Theme

  • laboratory measurement

Process

  • log interpretation

Feature type

  • porosity

Feature type

  • permeability

Theme

  • characterisation

Discipline

  • neural network

Feature type

  • reservoir

Feature type

  • seal

Theme

  • Exploring for the Future

Keywords

  • Published_External

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Creative Commons Attribution 4.0 International Licence

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CC-BY

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4.0

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© 2022 The Author(s) (or their employer(s))

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2018-11-01T00:00:00
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English
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UTF8

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As part of GA's Exploring for the Future program, this work aims to derive petrophyscial properties from wireline logs. The research results have been put onto an APPEA paper (2022).

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Australian Government Security Classification System

Edition date
2018-11-01T00:00:00
Website

https://www.protectivesecurity.gov.au/Pages/default.aspx

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Unclassified

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urn:uuid/29c556cc-5b3e-4add-a601-f66b64cb9e45

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GeoNetwork UUID

Language
English
Character encoding
UTF8
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Role Organisation / Individual Name Details
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Commonwealth of Australia (Geoscience Australia)

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Wang, L

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Wang, L.

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Journal Articles and Conference Papers

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Geoscience Australia - short identifier for metadata record with

uuid

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eCatId/146053

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https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/29c556cc-5b3e-4add-a601-f66b64cb9e45

Date info (Creation)
2021-10-28T22:52:57
Date info (Revision)
2021-10-28T22:52:57

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AU/NZS ISO 19115-1:2014

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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

 
 

Spatial extent

N
S
E
W


Keywords

Cambrian Exploring for the Future Neoproterozoic characterisation laboratory measurement log interpretation neural network permeability porosity reservoir seal
theme.ANZRC Fields of Research.rdf
EARTH SCIENCES GEOPHYSICS

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