A unit of US energy giant Chevron and the Gorgon LNG joint venture participants have taken a final investment decision on the $4 billion Jansz-Io compression project offshore Western Australia.
The Jansz-Io compression (J-IC) project will help gas recovery at the giant 15.6 mtpa Gorgon LNG project as the offshore field ages.
Nigel Hearne, Chevron Eurasia Pacific Exploration and Production president, said J-IC represents Chevron’s most significant capital investment in Australia since the sanctioning of the Gorgon Stage 2 project in 2018.
“Using world-leading subsea compression technology, J-IC is positioned to maintain gas supply from the Jansz-Io field to the three existing LNG trains and domestic gas plant on Barrow Island,” Hearne said.
Moreover, he said this would maintain an “important source of clean-burning natural gas to customers that will enable energy transitions in countries across the Asia Pacific region.”
A modification of the existing Gorgon development, J-IC will involve the construction and installation of a 27,000-tonne normally unattended floating field control station.
In addition, the work also includes installing approximately 6,500 tonnes of subsea compression infrastructure and a 135km submarine power cable linked to Barrow Island.
Chevron expects construction and installation activities to take about five years to complete.
J-IC follows the Gorgon Stage 2 project, which is nearing completion of the installation phase, to supply gas to the Gorgon plant from four new Jansz-Io and seven new Gorgon wells.
The Chevron-operated Gorgon project is a joint venture between the Australian subsidiaries of Chevron (47.333 percent), ExxonMobil (25 percent), Shell (25 percent), Osaka Gas (1.25 percent), Tokyo Gas (1 percent) and JERA (0.417 percent).