Subsidence and Thermal History Modelling for Hydrocarbon Expulsion in the Browse Basin

The Australian Ocean Data Network provides subsidence and thermal history models for 31 wells and 25 depocentre sites in the Browse Basin. The analysis examines the generation and expulsion history of Jurassic and Early Cretaceous petroleum systems, incorporating new palaeo-bathymetric estimates and kerogen kinetic data. The models suggest multiple effective source units for gas expulsion and identify specific regions for effective oil charge.

Use Cases

• Model hydrocarbon expulsion timing based on subsidence and thermal history analysis.
• Identify potential source rock units for oil and gas based on modelled expulsion volumes.
• Assess exploration opportunities in outboard areas based on the modelled influence of Late Tertiary carbonate clinoforms.
• Evaluate the organic richness and quality of Jurassic rift sediments for charge sensitivity analysis.
• Correlate modelled expulsion events with observed hydrocarbon accumulations like Cornea and Gwydion-1.

Strengths

• Analysis is based on data from 31 wells and 25 depocentre sites.
• Models incorporate new palaeo-bathymetric estimates and detailed benthic foraminiferal data.
• The study provides specific insights for the Heywood Graben and Seringapatam Sub-basin regions.

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 Browse Basin study area.

Provenance

Source

Australian Ocean Data Network

Collection Method

Subsidence and thermal history analysis of well and depocentre data, incorporating seismic geometries and benthic foraminiferal data.

Time Range

Jurassic and Early Cretaceous periods, with modelled expulsion events into the Tertiary.

Freshness

Last updated 2026-06-17 00:41:16.303038; freshness should be verified.

Geography

Browse Basin, North West Shelf of Australia, including the Heywood Graben and Seringapatam Sub-basin.