Redefining the Petroleum Systems of Australia's Browse Basin

Geoscience Australia Data updated the petroleum systems model for the Browse Basin, offshore Western Australia, using molecular, isotopic, and biomarker datasets. The analysis redefines four petroleum systems and details major gas accumulations, including Ichthys with an estimated 12.8 trillion cubic feet of gas and 527 million barrels of condensate. This work was published on May 14, 2026.

Use Cases

• Modeling gas and condensate reserves based on detailed accumulation estimates.
• Correlating hydrocarbon sources based on molecular and isotopic data mentioned in the description.
• Mapping petroleum system extents based on the four defined systems (Plover-Plover, Plover/Vulcan-Vulcan, etc.).
• Assessing biodegradation and recharge effects based on observations from the Cornea and Gwydion accumulations.

Strengths

• Includes specific reserve estimates for major accumulations (e.g., 12.8 Tcf gas at Ichthys).
• Defines four distinct petroleum systems with source and reservoir rock details.
• Integrates multiple data types (molecular, isotopic, biomarker) as described.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Freshness should be verified as the last update is dated 2026-05-14.

Provenance

Source

Geoscience Australia Data

Collection Method

Collation and analysis of existing molecular, isotopic, and biomarker datasets.

Freshness

Last updated 2026-05-14 05:02:02.920507

Geography

Browse Basin, offshore Western Australia Kimberley region.