Gage Sandstone CO2 Storage Potential in the Vlaming Sub-basin, Offshore Perth Basin

A 2026 study by the Australian Ocean Data Network assesses the CO2 storage suitability of the Early Cretaceous Gage Sandstone in the Vlaming Sub-basin. The analysis integrates 2D seismic interpretation, well log data from 8 wells, and biostratigraphic review to characterize the submarine fan reservoir. The reservoir covers an area of approximately 23,000 km2, with porosities of 23-30% and permeabilities of 200-1800 mD.

Use Cases

• Modeling CO2 injectivity and storage capacity based on reported reservoir porosity and permeability ranges.
• Analyzing sediment transport and fan system evolution based on paleogeographic reconstructions and seismic facies mapping.
• Assessing seal integrity for long-term storage based on the described regional South Perth Shale seal.
• Correlating stratigraphic units across wells using the revised G. mutabilis dinoflagellate zone interpretations.

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% and permeability 200-1800 mD.
• Defines clear spatial and depth context: area of ~23,000 km2 and depths from 1000-3000 m below seafloor.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to the single case study area.

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 (geological timeframe)

Freshness

Last updated 2026-06-23 05:30:20.018294; freshness should be verified.

Geography

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