Bureau of Resources and Energy Economics
 

Eyre Sub-basin

View full size

Release Area – W14-19

Work program bids close 2 April 2015

Highlights

  • Under-explored frontier Jurassic–Cretaceous rift-basin
  • Water depths 100–2800 m
  • Adjacent to active exploration permits in Ceduna Sub-basin
  • Deltaic and shallow marine depositional systems
  • Regional 2D seismic coverage
  • Well control provided by Jerboa 1
  • Special Notices apply, refer to Guidance Notes

Release Area W14-19 is located 75 to 200 km off the south coast of Western Australia, approximately 400 km east of Esperance, and comprises 360 graticular blocks covering the entire Eyre Sub-basin. The sub-basin represents an offshore frontier where only one exploration phase occurred in the late 1970s to early 1980s, culminating in the well Jerboa 1 which encountered minor residual oil indications.

The Eyre Sub-basin is located in the eastern Bight Basin and comprises a series of Middle Jurassic–Early Cretaceous east-northeast-striking en-echelon half graben. The sub-basin covers an area of approximately 9200 km2, and contains up to 3500 m of Jurassic–Cretaceous sediments. Geological understanding of the Eyre Sub-basin is based on interpretation of a generally good quality, regional scale, 2D seismic data set, which has a line spacing of approximately 20–40 km, and the Jerboa 1 well, drilled by Esso Australia in 1980, which provides valuable stratigraphic control and constraint on seismic-based facies interpretation. Additional stratigraphic information for the Cenozoic section is provided by the results of Ocean Drilling Program Site 182 wells (Feary et al, 2000, 2004).

Related documents
Document Title PDF Other Format
Release Area Map – Eyre Sub-basin PDF JPG
Geology – Eyre Sub-basin PDF DOC
Data Listing – Eyre Sub-basin   XLS
Block Listing and Block Diagram – Eyre Sub-basin PDF DOC
Regional Geology – Bight Basin PDF DOC
Bidding for an exploration permit   DOC
2014 Special Notices   DOC

Note: Due to the complexity of these figures no alternative descriptions have been provided.
Please email Geoscience Australia at feedback@ga.gov.au for alternate descriptions.