Gage Sandstone CO2 Storage Potential in the Vlaming Sub-basin

A geological case study assessing the CO2 storage potential of the Early Cretaceous Gage Sandstone in the Vlaming Sub-basin, offshore Western Australia. The analysis integrates 2D seismic facies mapping, well log interpretation from 8 wells, and biostratigraphic data to characterize the reservoir. The Gage Sandstone reservoir has porosities of 23-30%, permeabilities of 200-1800 mD, and lies at depths suitable for supercritical CO2 injection.

Use Cases

• Model CO2 storage capacity based on reservoir properties like porosity (23-30%) and permeability (200-1800 mD).
• Map subsurface geology and sediment transport pathways based on seismic facies and paleogeographic reconstructions.
• Assess reservoir-seal pair integrity for long-term storage based on the Gage Sandstone and overlying South Perth Shale.
• Analyze the distribution and thickness (up to 360 m) of the Gage Lowstand Systems Tract from well intersections.

Strengths

• Reservoir properties are quantified with specific ranges: porosity 23-30% and permeability 200-1800 mD.
• Analysis is based on integration of multiple data types: 2D seismic, well logs from 8 wells, and biostratigraphy.
• The study provides a detailed paleogeographic reconstruction of the submarine fan system's evolution.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• Data may reflect geographic bias inherent to data_gov_au, focusing solely on the Vlaming Sub-basin.

Provenance

Source

Australian Ocean Data Network

Collection Method

Detailed sequence stratigraphic analysis integrating 2D seismic interpretation, well log analysis, and biostratigraphic data.

Time Range

Early Cretaceous (Valanginian) geological period.

Freshness

Last updated 2026-04-16 10:02:04.119579; freshness should be verified.

Geography

Vlaming Sub-basin, offshore southern Perth Basin, Western Australia (approximately 23,000 km² area).