Chevron Australia is seeking approval from NOPSEMA for the development of pipeline and subsea infrastructure at its Gorgon project.
Gorgon is one of the world’s largest LNG projects and the largest single resource project in Australia’s history.
Gorgon comprises offshore production wells and pipeline infrastructure that gathers natural gas from the Jansz–Io and Gorgon gas fields and transports it to a facility on Barrow Island for processing.
To maintain gas supply to the facility on Barrow Island and to sustain current gas production rates, Chevron Australia plans to install a subsea compression station and associated infrastructure in the Jansz–Io gas fields.
The scope of proposed works include:
– Subsea compression station and associated spools
– A normally unattended, floating field control station anchored to the seabed by 12 mooring lines
– An umbilical to supply power from Barrow Island to the field control station, and power cables, known as flying leads, from the field control station to the subsea compression station
– An umbilical to transmit power and communications between the field control station and the existing Jansz CDU
– Pipeline crossings and rock stabilisation as required.
These works were scheduled to be completed by mid-2026, however due to a change in the timing of the installation schedule, activities are now expected to continue into 2027 – with the subsea compression station infrastructure now planned to be installed in two separate campaigns rather than one.
While the methodology for installation of infrastructure has not changed, the new NOPSEMA proposal updates the project schedule, vessel requirements and proposed durations of activities, which, if approved, may occur at any time over the following five years.
Subscribe to Energy Today for the latest project and industry news.