Jansz-Io Compression project

Nexans will deliver a turnkey contract to supply and install a groundbreaking deep-water high voltage dynamic cable solution for the Jansz-Io Compression (J-IC) project operated by Chevron Australia.

The Jansz-Io gas field is part of the wider Chevron-operated Gorgon development, which has been operational since 2016 and delivers natural gas to customers across Asia and Australia. The 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).

The J-IC project will use world-leading subsea compression technology to maintain long-term natural gas supplies to the Gorgon liquefied natural gas (LNG) and domestic gas facilities on Barrow Island. As part of this, Nexans will deploy a power and communication transmission system from the shore to the offshore compression facilities, which will sit at a water depth of 1,400m. A 145kV deep-water dynamic cable will provide power from shore to an offshore floating facility that will subsequently power and control the subsea compression.

Nexans will use its new cable-laying vessel, the Aurora, to install the cables for J-IC. The new vessel is state of the art and its high load, carousel capabilities are specifically designed for laying cables in complex, deep-water deployments like the Jansz-Io field. The 135km long high voltage subsea power cable will also be manufactured, tested and installed in one continuous length.