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A Stratigraphic Reconstruction of Bulk Volatile Chemistry from Fluid Inclusions in: Yowalga 3

Created 17/10/2025

Updated 17/10/2025

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Exploring for the Future (EFTF) is an Australian Government program led by Geoscience Australia (GA), in partnership with state and Northern Territory governments. The EFTF program (2016-2024) aims to drive industry investment in resource exploration in frontier regions of onshore Australia by providing new precompetitive data and information about their energy, mineral and groundwater resource potential. Under the EFTF program, the Onshore Energy Project undertook a study of petroleum prospectivity of the onshore Officer Basin in South Australia and Western Australia. Yowalga 3 well in Western Australia was selected based on the occurrence of gas and oil shows reported in the well completion report. Sampling of cuttings and cores was done at Geoscience Australia's Petroleum Data Repository in Canberra. Geoscience Australia commissioned a fluid inclusion stratigraphy (FIS) study on the downhole samples. Here, volatile components ostensibly trapped with fluid inclusions are released and analysed revealing the level of exposure of the well section to migrating fluids. Integration of thin section (TS) preparations reveal to extent of gas and fluid trapping within fluid inclusions while microthemometry (MT) gives an estimation of fluid inclusion trapping temperature. For Yowalga 3, FIS analysis was performed on 698 cuttings and 30 cores between 140 metres and 3526 metres base depth, together with 22 samples prepared for TS. To support this study, lithostratigraphic tops were compiled by Geoscience Australia. The results of the study are found in the accompanying documents. Note: Yowalga 3 results are in two parts, Part 1 and Part 2, since the total number of samples exceeded to maximum number of samples (575) for a Schlumberger well report. Part 1 has cuttings by increasing depth and Part 2 has the remaining cuttings then the cores.

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Field Value
Title A Stratigraphic Reconstruction of Bulk Volatile Chemistry from Fluid Inclusions in: Yowalga 3
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/4b9e2520-81a1-42d5-aec4-f69a014c618d
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 29/07/2022
Geospatial Coverage
Map data © OpenStreetMap contributors
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Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "A Stratigraphic Reconstruction of Bulk Volatile Chemistry from Fluid Inclusions in: Yowalga 3". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/a-stratigraphic-reconstruction-of-bulk-volatile-chemistry-from-fluid-inclusions-in-yowalga-3