Geochemistry of Dew Point Petroleum Systems in the Browse Basin

Geochemical analysis of four Mesozoic petroleum systems in Australia's Browse Basin reveals gas-condensates with a methane dominance of 91% dryness and condensate-gas ratios ranging from 7 to 35 bbl/MMscf. The dataset correlates geochemical fingerprints from source rocks and fluids, identifying specific biomarker signatures like high C29 sterane and C19 tricyclic triterpane abundances. It provides a framework for understanding oil rim formation in gas-prone basins through dew point pressure relationships.

Use Cases

• Correlating oil and condensate samples based on molecular and carbon isotopic signatures described in the geochemical families.
• Assessing hydrocarbon phase behavior and oil rim potential using reported condensate-gas ratios and dew point pressure relationships.
• Identifying source rock origins and depositional environments from biomarker data such as C29 sterane and C19 tricyclic triterpane abundances.
• Evaluating the petroleum potential of specific geological formations like the Lower-Middle Jurassic Plover Formation using the provided fluid characteristics.

Strengths

• Provides specific, quantitative geochemical measurements, including gas dryness (91%) and condensate-gas ratio ranges (7-35 bbl/MMscf).
• Synthesizes analysis from a referenced scientific publication (Rollet et al., 2016), suggesting a research foundation.
• Its presence on a government data platform (data.gov.au) managed by the Australian Ocean Data Network indicates an institutional provenance.

Limitations

• Critical structural metadata is missing, including row count, column names, file size, and specific data format details beyond 'PDF'.
• The dataset's description is repeated verbatim across multiple platform entries, which may indicate a metadata propagation issue rather than distinct data offerings.
• License and author information are not provided, limiting clarity on reuse permissions and original data creation.

Provenance

Source

Australian Ocean Data Network

Collection Method

Likely compiled from geochemical studies of source rocks and fluids combined with petroleum systems analysis, as referenced.

Time Range

Mesozoic era (geological time scale)

Freshness

Last updated 2026-06-04 08:27:51.305498

Geography

Browse Basin, offshore Australia's North West Shelf, including the Scott Reef Trend and Ichthys gas accumulation.