Hydrocarbon Source Analysis in the Browse Basin via GCxGC-TOFMS and CSIA

Geoscience Australia Data published a study combining two-dimensional gas chromatography and compound-specific isotope analysis to identify hydrocarbon sources in the Browse Basin. The analysis focuses on diamondoids, n-alkanes, and aromatic hydrocarbons from non-biodegraded and biodegraded oil fields. The dataset, last updated on 2026-04-30, is presented in PDF format.

Use Cases

• Identify mixed hydrocarbon sources in petroleum accumulations based on diamondoid concentrations and ratios.
• Assess thermal maturity and biodegradation resistance of fluids using diamondoid analysis.
• Correlate biomarker signatures with isotopic data to understand complex reservoir fill histories.
• Model gas escape and fluid mixing in offshore basins using quantitative hydrocarbon data.

Strengths

• Analysis uses GCxGC-TOFMS, which minimizes interference from co-eluting compounds as cited in the description.
• Focuses on diamondoids, compounds described as source-specific and resistant to thermal maturity and biodegradation.
• Compares data from distinct oil fields (Caswell, Cornea, Gwydion) with different biodegradation states.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is presented in PDF format, which may require extraction for computational analysis.

Provenance

Source

Geoscience Australia Data

Collection Method

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

Freshness

Last updated 2026-04-30 14:50:30.067980; freshness should be verified.

Geography

Browse Basin, offshore Northwest region of Australia.