Gage Sandstone CO2 Storage Potential Analysis For Vlaming Sub-basin

A 2026 case study by the Australian Ocean Data Network assesses the Early Cretaceous Gage Sandstone for CO2 storage. The analysis integrates 2D seismic interpretation, well log data from 8 wells, and biostratigraphic review of 6 wells to map the reservoir's properties and extent. It characterizes a submarine fan system covering approximately 23,000 km2 in the offshore southern Perth Basin.

Use Cases

• Estimate CO2 storage capacity using reservoir properties like porosity (23-30%) and permeability (200-1800 mD).
• Model subsurface fluid flow by analyzing mapped seismic facies, channelized turbidites, and debris flow deposits.
• Identify optimal injection zones based on interpreted depth range (1000-3000 m below seafloor) and thickness (up to 360 m).
• Reconstruct paleogeographic sediment transport directions from mapped canyon sources and basin plain deposits.
• Correlate stratigraphic units using the G. mutabilis dinoflagellate zone as a biostratigraphic marker.

Strengths

• Integrates multiple data types: 2D seismic interpretation, well log analysis from 8 wells, and biostratigraphic data.
• Provides specific reservoir property ranges: porosity 23-30%, permeability 200-1800 mD, depth 1000-3000 m.
• Covers a large geographic area of approximately 23,000 km2 within the Vlaming Sub-basin.

Limitations

• Sample size is limited to data from 8 wells for the reservoir and 6 wells for biostratigraphy.
• Primary data formats (DOCX, PDF, HTML) are report-based, requiring extraction for quantitative analysis.
• Temporal coverage is focused on the Early Cretaceous period, with no modern observational data.

Provenance

Source

Australian Ocean Data Network, part of a National Carbon Infrastructure Plan study.

Collection Method

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

Time Range

Early Cretaceous geological period.

Freshness

Last updated metadata indicates 2026, suggesting recent publication.

Geography

Vlaming Sub-basin, offshore southern Perth Basin, Western Australia.