Redefining Petroleum Systems of Australia's Browse Basin with Geochemical Data

The Browse Basin offshore Western Australia hosts major gas and condensate reserves, including the super-giant Ichthys accumulation with an estimated 12.8 trillion cubic feet of gas and 527 million barrels of condensate. This dataset collates molecular, isotopic, and biomarker data to redefine four petroleum systems, addressing a decade-old knowledge gap. The work is associated with the Australian Ocean Data Network and was last updated in April 2026.

Use Cases

• Modeling hydrocarbon source rock affinity based on molecular and isotopic datasets mentioned in the description.
• Analyzing the extent of biodegradation and recharge in oil and gas accumulations like Cornea and Gwydion.
• Correlating wet gases and oils with their source rocks, as stated to be in progress.
• Defining petroleum system boundaries based on isotopic profiles of n-alkanes.
• Assessing the complexity of gas fill history from multiple organic and inorganic sources.

Strengths

• Includes specific resource estimates for major accumulations (e.g., Ichthys: 12.8 Tcf gas, 527 mmbbl condensate).
• Updates petroleum system models for a basin where they had not been revised for a decade.
• Integrates multiple geochemical data types: molecular, isotopic, and biomarker datasets.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is presented in PDF/HTML formats, which may require extraction for computational analysis.

Provenance

Source

Australian Ocean Data Network

Collection Method

Collation of existing molecular, isotopic, and biomarker datasets from prior research.

Time Range

Likely covers data up to the publication date, but specific temporal coverage is not stated.

Freshness

Last updated 2026-04-28 13:58:56.099190; freshness should be verified.

Geography

Browse Basin, offshore Western Australia, including the Caswell Sub-basin, Yampi Shelf, and Heywood Graben.