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Geoscience Australia has acquired new and reprocessed seismic data sets from the southwestern continental margin, as part of its new petroleum initiative. Seismic data cover the frontier Bremer Sub-basin and Mentelle Basin and the previously explored Vlaming Sub-basin.

Geoscience Australia previously acquired new and reprocessed seismic data sets from the southwestern continental margin, as part of its Big New Oil program. Seismic data cover the frontier Bremer Sub-basin.

Data availability

Pre-stack time migrated seismic data from the Southwest Frontiers Survey (including field tapes) are available at cost of transfer through the Petroleum Data Repository.

Seismic Data From Geoscience Australia Survey 280

Geoscience Australia Survey 280 was undertaken on Australia's southwest continental margin in 2004.

The survey acquired 2700km of industry-standard, 106-fold seismic data recorded to 12 seconds two-way time using a 6-8km digital streamer and a 4900 cubic inch air gun array.

This new seismic data set includes 12 lines (1300km) in the Bremer Sub-basin, 7 lines (1100km) in the Mentelle Basin and 3 lines (300km) in the Vlaming Sub-basin.

These are the first seismic data to be acquired in the Mentelle Basin and Bremer Sub-basin in almost 30 years and from the Vlaming Sub-basin in over a decade.

The new seismic data provides a regional coverage of the Bremer Sub-basin and Mentelle Basin and will help determine if suitable geological conditions exist for generation and trapping of hydrocarbons in these frontier basins. It also provides the first deep seismic data (> 6 seconds two-way time) in the Vlaming Sub-basin.

All seismic data acquired from the Southwest frontiers Survey are available with basic on-board processing (Radon de-multiple, DMO, Stack, Migration).

Seismic data from the Bremer and Vlaming Sub-basins are also available with additional processing (XRmult and other specialist demultiple processes, pre-stack time and/or depth migration, full stacks, near, middle and far offset stacks). Datasets include final migrations in SEG-Y format, navigation and velocity data and original field data in SEG-D format.

Reprocessed ESSO R74A Seismic Data From the Bremer and Denmark Sub-basins

A total of 2224km of reprocessed seismic data from the Bremer R74A Marine Seismic Survey are available from Geoscience Australia.

The seismic data extends from the Bremer Sub-basin to the Denmark Sub-basin in the western part of the Bight Basin. The Bremer R74A Marine Seismic Survey was originally acquired by ESSO Australia Ltd. in 1974 and reprocessed in 2001 by Fugro MCS (formerly Seismic Australia).

The data underwent post-stack Wave Equation Migration. Geoscience Australia has now purchased the licensing rights to this reprocessed seismic data, which are available in SEG-Y format, with navigation, velocities and final migration.

Topic contact: petroleum@ga.gov.au Last updated: May 31, 2012