Gage Sandstone Reservoir: Lithological Variability in Offshore Vlaming Sub-basin

Palaeogeographic reconstructions characterize the Early Cretaceous Gage Sandstone and South Perth Shale reservoir-seal pair in the Vlaming Sub-basin. The dataset integrates 2D seismic interpretation, well log analysis, and biostratigraphic data to map sediment supply and sea-level changes. It is hosted by the Australian Ocean Data Network and was last updated in 2026.

Use Cases

• Model reservoir porosity and permeability based on reported core measurements of 9.5-23.9% and 52-1340 mD
• Map submarine fan systems and sediment pathways based on seismic facies mapping of canyon-confined inner fan to basin plain deposits
• Analyze post-rift depositional history based on reconstructions of regressions and transgressions infilling a palaeodepression
• Characterize reservoir-seal pairs for hydrocarbon exploration based on the described pinch-out plays against the Valanginian Unconformity

Strengths

• Includes specific reservoir property ranges: core porosities of 9.5-23.9% and permeabilities from 52-1340 mD
• Integrates multiple data sources: 2D seismic interpretation, well log analysis, and new biostratigraphic data
• Provides high-resolution reconstructions based on seismic facies mapping

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 specific offshore basin study

Provenance

Source

Australian Ocean Data Network

Collection Method

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

Time Range

Early Cretaceous

Freshness

Last updated 2026-05-05 02:00:09.384237; freshness should be verified

Geography

Offshore Vlaming Sub-basin