Gage Sandstone CO2 Storage Potential: Seismic and Well Log Analysis, Offshore Perth Basin

A 23,000 km2 offshore sub-basin containing up to 14 km of sediments is assessed for carbon storage. Geoscience Australia Data produced this study, which integrates 2D seismic interpretation and analysis of 8 wells to characterize a sandstone reservoir with 23-30% porosity. The Gage Lowstand Systems Tract, a sand-rich submarine fan, reaches thicknesses up to 360 meters and lies 1000-3000 meters below the seafloor.

Use Cases

• Modeling CO2 storage capacity based on reservoir porosity (23-30%) and permeability (200-1800 mD)
• Mapping submarine fan architecture and sediment transport directions based on seismic facies interpretations
• Assessing seal integrity for carbon storage based on the regional South Perth Shale formation
• Correlating stratigraphic units across wells using the G. mutabilis dinoflagellate zone biostratigraphic marker

Strengths

• Reservoir properties are quantified with specific porosity (23-30%) and permeability (200-1800 mD) ranges
• Analysis integrates data from 8 wells and 2D seismic interpretation for spatial characterization
• The study defines a specific geological unit (Gage LST) with mapped thicknesses up to 360 meters

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

Geoscience Australia Data

Collection Method

Sequence stratigraphic analysis integrating 2D seismic interpretation, well log analysis, and biostratigraphic data

Time Range

Early Cretaceous (Valanginian age)

Freshness

Last updated 2026-03-25 15:30:50.031099; freshness should be verified

Geography

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