Hydrocarbon Source Analysis for Browse Basin Using GCxGC and Diamondoid CSIA

Geoscience Australia Data combined two-dimensional gas chromatography and compound-specific isotope analysis to study hydrocarbon sources in Australia's Browse Basin. The analysis focused on diamondoids, compounds resistant to biodegradation, to differentiate contributions from marine and terrestrial sources in both biodegraded and non-biodegraded oil fields. This dataset likely contains quantitative measurements of diamondoid concentrations, ratios, and isotopic compositions from specific oil samples.

Use Cases

• Identify mixed hydrocarbon sources in petroleum accumulations based on diamondoid concentration and isotope data.
• Differentiate between biodegraded and non-biodegraded oil fields using biomarker and diamondoid signatures.
• Model hydrocarbon charge history in complex basins by correlating fluid maturity indicators with source rock sequences.

Strengths

• Analysis leverages diamondoids, which are described as source-specific and highly resistant to thermal maturity and biodegradation.
• Methodology uses GCxGC-TOFMS, which minimizes interference from co-eluting compounds and allows whole oil injection.
• Study compares specific oil fields (Caswell, Cornea, Gwydion) with distinct biodegradation states.

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 comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry (GCxGC-TOFMS) and compound-specific isotope analyses (CSIA).

Freshness

Last updated 2026-05-14 04:12:31.970682; freshness should be verified.

Geography

Browse Basin, offshore Northwest region of Australia.