Mitsui E&P Australia is the non-operator joint venture partner (40%) with Woodside Energy for the Greater Enfield area, comprising:
- The Vincent oilfield was discovered in 1998, with the first oil in August 2008.
- The Enfield oilfield was discovered in 1999, with the first oil in July 2006. The production ceased in 2018 with all decommissioning activities scheduled to be completed in 2026.
- The Greater Enfield Development oilfields (Norton, Cimatti, Norton over Laverda) reached FID in 2016, with the first oil in 2019.
About the project
The Greater Enfield and Vincent heavy sweet crude is processed through the Ngujima-Yin Floating Production Storage and Offloading vessel.
Currently, Greater Enfield and Vincent crude oils are marketed jointly with Woodside and Mitsui E&P Australia.
Decommissioning
Enfield
Decommissioning activities are now close to completion. All wells have been plugged and abandoned, and all facilities, including subsea infrastructures, have been removed, dismantled, and recycled onshore. Seabed survey and monitoring work in the licence area were finalised in 2026. The forward plan is to submit reports to the satisfaction of NOPSEMA, for the conservation and protection of the natural resources in the licence area.
The FPSO Nganhurra was acquired by Norwegian contractor BW Offshore Sea on 28 May 2025.
Vincent and Greater Enfield:
Decommissioning planning activities for the Ngujima-Yin FPSO have commenced in line with Australian regulatory requirements. Assess studies were completed in Q2 2026, and Select studies are scheduled for completion in early 2027. Preparation of the Environmental Plan for the removal of the Ngujima-Yin FPSO will begin in 2027.
