Browse Basin Petroleum Systems Analysis with Isotopic and Molecular Data

A 2026 research publication from Geoscience Australia redefines the petroleum systems of the Browse Basin offshore Western Australia. The work collates molecular, isotopic, and biomarker datasets for wet gases and crude oils to analyze four distinct petroleum systems. It details the complex origins of gas accumulations, including the super-giant Ichthys field with 12.8 trillion cubic feet of gas.

Use Cases

• Modeling hydrocarbon generation and migration based on described molecular and isotopic datasets.
• Correlating source rocks to reservoirs based on the defined four petroleum systems and their isotopic profiles.
• Assessing biodegradation and recharge effects in oil and gas accumulations as described for the Yampi Shelf.
• Evaluating gas-to-condensate ratios (CGR) for resource estimation, as provided for major accumulations like Ichthys and Brecknock.

Strengths

• Provides specific resource estimates for major fields, including 12.8 Tcf gas and 527 million barrels condensate for Ichthys.
• Defines four distinct petroleum systems with detailed source, reservoir, and organic matter descriptions.
• Collates multiple analytical datasets including molecular, isotopic (13C/12C, D/H), and biomarker data.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The primary data formats are PDF and HTML, which may require extraction for computational analysis.

Provenance

Source

Geoscience Australia Data

Collection Method

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

Time Range

Analysis references discoveries from the 1960s and updates systems not revised for a decade prior to 2026.

Freshness

Last updated 2026-04 20 01:15:11.469825; freshness should be verified.

Geography

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