Gorgon partners sanction subsea compression for Jansz-Io

July 2, 2021
Chevron and its partners in the Gorgon joint venture have committed to the $4-billion Jansz-Io Compression project offshore Western Australia.

Offshore staff

SAN RAMON, CaliforniaChevron and its partners in the Gorgon joint venture have committed to the $4-billion Jansz-Io Compression (J-IC) project offshore Western Australia.

Nigel Hearne, president Chevron Eurasia Pacific Exploration and Production president, said this was the company’s most significant capital investment in Australia since the sanctioning of the Gorgon Stage 2 project in 2018.

J-IC will ensure continued supplies of gas from the Jansz-Io field to the three LNG trains and domestic gas plant on Barrow Island, he added.

This is a modification of the Gorgon development, involving construction and installation of a 27,000-metric ton, normally unattended floating field control station, 6,500 metric tons of subsea compression infrastructure, and a 135-km (84-mi) subsea power cable connected to Barrow Island.

Aker Solutions will supply the subsea compression technology under a NOK7-billion ($808-million) contract. The company started work on the FEED for the project in 2019.

Chevron expects construction and installation activities to take around five years to complete.

Gorgon Stage 2, currently nearing completion of the installation phase, will supply gas to the Gorgon plant from four new Jansz-Io and seven new Gorgon wells.

Chevron-operates the Gorgon project in partnership with ExxonMobil, Shell, Osaka Gas, Tokyo Gas, and JERA.

The Jansz-Io field, 200 km (124 mi) offshore in 1,350 m (4,429 ft) of water, came onstream in late 2015.

07/02/2021