Bureau of Resources and Energy Economics
 

Exmouth Sub-basin

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Release Areas – W14-17 and W14-18

Work program bids close 2 April 2015

Highlights

  • One of Australia’s major oil producing provinces, adjacent to multi-Tcf gas fields
  • Proximal to Macedon gas pipeline with tieback to onshore gas plant
  • Shallow to deep water depths, 150–1100 m
  • Oil-prone Upper Jurassic and gas prone Triassic to Middle Jurassic source rocks
  • Triassic fault block and Cretaceous stratigraphic trap plays
  • Special Notices apply, refer to Guidance Notes

Release Areas W14-17 and W14-18 are mostly within the northern Exmouth Sub-basin and also extend onto the southern Exmouth Plateau, approximately 100 km north of Exmouth. W14-18 comprises two graticular blocks and W14 17 comprises a larger area, incorporating the Zeepaard 1 gas discovery and oil show. The Release Areas are in the vicinity of numerous oil and gas accumulations including Vincent/Van Gogh, Pyrenees/Macedon and Coniston.

The Exmouth Sub-basin formed as one of a series of northeast–southwest trending, en-echelon structural depressions during the Pliensbachian to Oxfordian. Pre-rift sediments are of Permian and Early to Middle Triassic age, and are gas prone. The Upper Jurassic Dingo Claystone is the main oil-prone source rock within the Exmouth Sub-basin. Proven reservoirs occur within the Barrow Group and Dupuy Sandstone, with the Muderong Shale acting as the regional seal. Play types include fault block traps within the Mungaroo Formation sealed by the Dingo Claystone, and stratigraphic plays within the Barrow Group. Infrastructure is in-place for oil and gas production, with the Macedon gas pipeline in operation.

Related documents
Document Title PDF Other Format
Release Area Map – Exmouth Sub-basin PDF JPG
Geology – Exmouth Sub-basin PDF DOC
Data Listing – Exmouth Sub-basin   XLS
Block Listing and Block Diagram – Exmouth Sub-basin PDF DOC
Regional Geology – Northern Carnarvon 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.