Browse Basin Hydrocarbon Fluid Analysis Using Diamondoids and Aromatics

GC × GC-TOFMS analysis of whole oil and condensate samples identifies mixed hydrocarbon sources in the Browse Basin. Data includes concentrations of methyladamantanes and methyldiamantanes, aromatic maturity ratios, and stable carbon isotopic compositions for diamondoids and alkylbenzenes. This research dataset was published in Marine and Petroleum Geology in 2020 by authors from Australian research institutions.

Use Cases

• Correlating hydrocarbon fluids across different accumulations using semi-volatile aromatic (SVA) and diamondoid compound profiles.
• Assessing fluid maturity levels by analyzing ratios and concentrations of methyladamantanes and methyldiamantanes.
• Identifying mixed-source accumulations by comparing stable carbon isotopic (δ13C) values of di-, tri-, and tetra-methylbenzenes.
• Mapping source rock contributions (e.g., Plover or Vulcan Formation) to specific fields like Cornea or Gwydion-1 based on compound-specific signatures.

Strengths

• Analytical data from comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry (GC × GC-TOFMS).
• Includes multiple geochemical proxies: diamondoid concentrations, aromatic maturity ratios, and compound-specific carbon isotope data.
• Samples cover multiple named accumulations across the Browse Basin, including Cornea, Gwydion-1, Mimia-1, and Concerto-1.

Limitations

• Sample size and specific row count for the analytical dataset are not provided.
• Geographic scope is limited to the Browse Basin, North West Shelf, Australia.
• Data is associated with a specific 2020 research publication, with no stated plans for updates.

Provenance

Source

Australian Ocean Data Network (AODN), derived from research published in Marine and Petroleum Geology, Volume 113, 2020.

Collection Method

Laboratory analysis of whole oil/condensate samples using GC × GC-TOFMS for diamondoids and semi-volatile aromatics.

Time Range

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Freshness

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Geography

Browse Basin, North West Shelf, Australia, including specific fields like Yampi Shelf, Ichthys field, Kronos-1.