Dew Point Petroleum Systems Geochemistry in Australia's Browse Basin

Geochemistry of dew point petroleum systems in the Browse Basin, offshore Australia's North West Shelf, analyzes hydrocarbon fluids and source rocks. The dataset correlates four Mesozoic petroleum systems using geochemical fingerprints, including gas dryness, condensate-gas ratios (CGR), API gravity, and biomarker signatures. It is provided by the Australian Ocean Data Network and was last updated in April 2026.

Use Cases

• Correlate hydrocarbon fluids to source rocks using biomarker signatures like C29 sterane and C19 tricyclic triterpane abundances.
• Model dew point pressure relationships with condensate-gas ratio (CGR) values ranging from 7 to 52 bbl/MMscf.
• Assess thermal maturity of petroleum systems using calculated vitrinite reflectance (Rc) values from 0.77% to 1.18%.
• Classify condensate families based on molecular and carbon isotopic (δ13C) signatures of saturated and aromatic hydrocarbon fractions.
• Map the distribution of gas-condensate systems like the Plover Formation and Heywood Graben using geochemical and spatial data.

Strengths

• Identifies four distinct Mesozoic petroleum systems with geochemical fingerprints.
• Includes specific fluid property measurements like API gravity (47-53°), gas dryness (~91%), and CGR ranges.

Limitations

• Sample size and row count are unknown, limiting statistical analysis.
• Data format is PDF, which may require extraction for computational analysis.
• Temporal coverage of the underlying sample data is not specified.

Provenance

Source

Australian Ocean Data Network

Collection Method

Combined geochemical studies of source rocks and fluids with petroleum systems analysis.

Time Range

Mesozoic era (geological time scale)

Freshness

null

Geography

Browse Basin, offshore North West Shelf of Australia, including Scott Reef Trend and Heywood Graben.