Offshore Petroleum Exploration Acreage Release 2013

Southern Petrel Sub-basin

Location of the 2013 Release Areas NT13-4 and NT13-5 in the Southern Petrel Sub-basin of the Bonaparte Basin.

Release Areas – NT13-4 and NT13-5

Bids close – 21 November 2013


  • Proximal to the Blacktip gas fields and Blacktip pipeline
  • Development/production plans are underway for the nearby Petrel, Tern and Frigate gas fields
  • Shallow water depths, 10–90 m
  • Proven plays in anticlines, tilted fault blocks and structural/stratigraphic traps, structures related to salt tectonics
  • Multiple potential oil- and gas-prone source rocks and active petroleum systems within the region
  • Special Notices apply, refer to Guidance Notes

Release Areas NT13-4 and NT13-5 are located in the Joseph Bonaparte Gulf, in the vicinity of the Petrel, Tern, Frigate and Blacktip gas fields; the latter commenced production via the Blacktip pipeline in 2009. Release Area NT13-5 is located partly within a marine reserve Special Purpose Zone (IUCN VI) and Multiple Use Zone (IUCN VI); for further information refer to Special Notices.

The Petrel Sub-basin in the southern Bonaparte Basin was formed during Paleozoic northeast–southwest extension and contains a thick succession of Paleozoic and Mesozoic sediments. Proven Permian petroleum systems in the region have charged the numerous gas accumulations. There is an oil and gas-prone early Carboniferous petroleum system, with Bonaparte Formation (Langfield Group) source rocks, in the inboard part of the sub-basin. The Release Areas offer a range of play types including early formed structures such as horst blocks and rotated fault blocks, as well as inversion-related anticlines. Stratigraphic traps are represented by pinch-outs and truncations across unconformities. Infrastructure in the region is expanding and will facilitate development of any new discovery.

Related documents
Document TitlePDFOther Format
Release Area Map – Southern Petrel Sub-basin PDF JPG
Geology – Southern Petrel Sub-basin PDF DOC
Data Listing – Southern Petrel Sub-basin PDF XLS
Block Listing – Southern Petrel Sub-basin PDF DOC
Block Diagram – Southern Petrel Sub-basin PDF JPG
Regional Geology – Bonaparte Basin PDF DOC
Further information on bidding and assessment PDF DOC
2013 Acreage Release Special Notices PDF DOC

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