ConocoPhillips Australia

Greater Poseidon

Greater Poseidon

We are exploring for natural gas and condensate in the Greater Poseidon field within the Browse Basin, located offshore approximately 480 kilometres north of Western Australia.

ConocoPhillips operates two Exploration Permits, WA-315-P and WA-398-P, with a 40% interest along with co-venturers Origin Energy (40%) and PetroChina (20%).  On 31 July 2014, Karoon Gas sold its interest to Origin Energy.

Phase one of exploration commenced in 2009, with a four well drilling program. The first well, Poseidon-1, was a successful discovery. Drilling continued into 2010 with two wells, Poseidon-2 and Kronos-1, successfully encountering hydrocarbons.

The second phase of exploration drilling commenced in 2012 and concluded in August of 2014. This phase consisted of six wells of which five, Boreas-1, Zephyros-1, Proteus-1, Pharos-1 and Poseidon North-1, were discoveries.

Technical review of the drilling results will continue into 2015, along with feasibility engineering of the two development options – floating LNG and backfill of our existing Darwin LNG facility.

As part of our ongoing commitment to environmental protection, a marine environmental baseline studies program was undertaken in the Greater Poseidon field and surrounds. In addition to informing engineering studies, these studies have helped enhance the overall scientific fabric of the Browse Basin region.

If you have a query about the appraisal or environmental programs, please do not hesitate to contact us by emailing


click here to read the marine study factsheet

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