Amplitude Energy has reached a final investment decision (FID) on its East Coast Supply Project (ECSP), advancing development of multiple offshore gas fields that are expected to help bolster gas supply to Australia's East Coast.
This will get underway upon completion of the company’s current drilling campaign, and it will include new subsea installations in the offshore Otway Basin and modifications to the onshore Athena Gas Plant during 2028.
Amplitude Energy is aiming to maximize use of existing Otway Basin infrastructure to increase East Coast gas supplies.
Subject to the company completing its acquisition of Artisan, the development will take in the Annie, Juliet and Artisan (AJA) fields, as well as Nestor if forthcoming exploration is successful.
Based on the present ECSP development case, the AJA fields could deliver up to 90 TJ/da to the Athena site for at least four years, Amplitude reported, with Annie and Artisan containing more than 120 PJ of 2C resources.
Analysis of reserves from the recent Juliet discovery will follow over the coming months.
The company projects costs for its 50% share in the development in the range $190 million to $210 million during 2027-28, including new subsea systems, control system upgrades, pipeline re-lifting, approvals and project management activities, and the costs of the potential Nestor subsea tie-in.
It has executed gas sales agreements for gas supplies with EnergyAustralia and AGL for 35 PJ of its share of ECSP production.
In Australia’s southern markets, Amplitude pointed out that declining supply from legacy local fields has increased dependence on gas diverted from Queensland and southern storage during periods of high demand.
Following cleanup of the recently completed Juliet-1, the well is now being suspended to be ready for development.
The Transocean Equinox semisubmersible rig will shortly relocate to the Annie discovery to spud the Annie-2 development well, to be followed by the Nestor exploration well.
Engineering and design work for the Nestor well has finished with all regulatory approvals in place for drilling.
