Geochemistry of Dew Point Petroleum Systems in Australia's Browse Basin

A geochemical analysis of petroleum systems in the Browse Basin, offshore Australia's North West Shelf. The dataset, from Geoscience Australia, correlates four Mesozoic petroleum systems with gas-prone (dew point) systems based on fluid composition and source rock studies. It was last updated on 2026-04-30.

Use Cases

• Classifying petroleum system families based on geochemical fingerprints like sterane and triterpane biomarkers.
• Modeling dew point pressure and condensate-gas ratio (CGR) relationships for reservoir fluid behavior.
• Assessing source rock maturity and origin using carbon isotopic signatures (δ13C) and calculated vitrinite reflectance.
• Correlating hydrocarbon fluids to specific geological formations, such as the Lower-Middle Jurassic Plover Formation.

Strengths

• Analysis includes specific geochemical metrics like gas dryness (91%), ideal CGR ranges (7-52 bbl/MMscf), and API gravity (47-53°).
• Identifies and differentiates between multiple petroleum system families (e.g., W1_1BRO, W1_2BRO) based on molecular and isotopic data.
• Provides maturity indicators for fluids, such as calculated vitrinite reflectance values (e.g., 0.77% to 1.18%).

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Geoscience Australia Data

Collection Method

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

Time Range

Mesozoic era (geological time scale).

Freshness

Last updated 2026-04-30 12:52:47.312150; freshness should be verified.

Geography

Browse Basin, offshore North West Shelf, Australia.