Browse Basin Hydrocarbon Fluid Analysis Using Semi-Volatile Compounds

Gas chromatography-mass spectrometry (GC × GC-TOFMS) analysis of semi-volatile aromatics and diamondoids from whole oil/condensate samples reveals multiple hydrocarbon sources in Browse Basin accumulations. The data identifies high-maturity fluids in biodegraded accumulations on the Yampi Shelf and suggests complex fill histories involving Jurassic source rocks like the Plover and Vulcan Formations. Results provide supplementary information to traditional saturated biomarker-based fluid discrimination.

Use Cases

• Correlating hydrocarbon fluids based on semi-volatile aromatic and diamondoid compound concentrations.
• Assessing fluid maturity using aromatic maturity ratios and stable carbon isotopic composition of specific compounds.
• Identifying mixed-source petroleum accumulations to reconstruct basin charge history.
• Differentiating hydrocarbon families, such as Plover-sourced condensates, based on elevated methyladamantane and methyldiamantane levels.

Strengths

• Analysis employs advanced comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry (GC × GC-TOFMS).
• Data provides information on compounds representing a significant proportion of the bulk fluid, complementing traditional minor biomarker studies.
• Dataset is hosted on a government platform (data.gov.au) and maintained by the Australian Ocean Data Network.

Limitations

• Column names, row count, and dataset size are unknown, limiting technical assessment.
• License and author information are not provided.
• The description is repeated verbatim across multiple platform entries, suggesting sparse metadata.

Provenance

Source

Australian Ocean Data Network

Collection Method

Laboratory analysis of whole oil/condensate samples using GC × GC-TOFMS.

Time Range

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Freshness

Last updated 2026-06-27 19:28:13.602205

Geography

Browse Basin, North West Shelf, Australia; specific sites include Cornea field, Gwydion-1, Mimia-1, Concerto-1 ST1 Deep, Kronos-1, Dinichthys North-1, Gorgonichthys-1.