WA-28-P Light Hydrocarbon Geochemistry: Dampier Sub-Basin Seismic Survey 1990

Western Australia's Dampier Sub-Basin is the focus of this geochemical dataset from a 1990 seismic survey. The Marine Geoscience and Petroleum Geology Group collected 531 km of Direct Hydrocarbon Detection (DHD) data across 25 lines to evaluate the method's usefulness. No significant hydrocarbon anomalies were detected, indicating well-sealed reservoirs in the area.

Use Cases

• Evaluate the effectiveness of Direct Hydrocarbon Detection (DHD) methods based on survey data over known oil and gas accumulations.
• Study hydrocarbon migration and reservoir seal integrity based on the lack of significant anomalies described.
• Analyze background and anomalous total hydrocarbon (THC) concentrations based on the reported ppm values like the increase near Montague 1.
• Map geochemical data alongside seismic lines based on the 25 survey lines described.

Strengths

• Data acquisition is precisely documented, occurring from October 22-28, 1990.
• Survey covers 531 km across 25 specific seismic lines in a defined permit area (WA-28-P).
• Description includes specific quantitative observations, such as a THC increase from 16ppm to 22.8ppm at Montague 1.

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/temporal bias inherent to data_gov_au, being a single survey from 1990.

Provenance

Source

Marine Geoscience and Petroleum Geology Group (Australian Bureau Of Mineral Resources), Geoscience Australia Data

Collection Method

Data acquired during a co-operative high-resolution seismic reflection program with Woodside Petroleum Pty Ltd.

Time Range

Survey conducted October 22-28, 1990.

Freshness

Last updated 2026-04-30 13:29:52.348661; freshness should be verified.

Geography

Dampier Sub-Basin, North-West shelf, Western Australia, specifically exploration permit WA-28-P between the Angel gas field and Madeleine 1 well.