Hydrocarbon Source Analysis in Australia's Browse Basin via GCxGC and CSIA

Data from a study combining two-dimensional gas chromatography and compound-specific isotope analysis to identify hydrocarbon sources in the Browse Basin, offshore Northwest Australia. The analysis focuses on diamondoids, n-alkanes, and aromatic hydrocarbons from non-biodegraded and biodegraded oil fields. The dataset is hosted by the Australian Ocean Data Network and was last updated in April 2026.

Use Cases

• Identify mixed hydrocarbon sources in oil accumulations based on diamondoid concentrations and isotopic signatures.
• Assess the maturity and biodegradation history of fluids using biomarker parameters and diamondoid ratios.
• Model gas escape and charge history in petroleum systems based on discrepancies between fluid composition and recovered gas.

Strengths

• Analysis uses GCxGC-TOFMS, which minimizes interference from co-eluting compounds and allows whole oil injection.
• Focuses on diamondoids, compounds described as source-specific and highly resistant to thermal maturity and biodegradation.
• Compares data from both non-biodegraded (Caswell) and biodegraded (Cornea, Gwydion) oil fields.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to the specific study area in the Browse Basin.

Provenance

Source

Australian Ocean Data Network

Collection Method

Data likely generated from laboratory analysis (GCxGC-TOFMS and CSIA) of oil samples.

Time Range

null

Freshness

Last updated 2026-04 10 22:12:59.302825; freshness should be verified.

Geography

Browse Basin, offshore Northwest Australia