Preparations continue for the Chevron-operated subsea compression project at the deepwater gas field that forms part of the jointly held Gorgon development
Chevron has awarded two contracts in the last several days: a US$120M contract to ABB to supply the overall electrical power system for the Jansz-Io Compression (J-IC) project and a contract extension to Australia-based service provider Worley for engineering and procurement services.
Worley filed a note regarding the contract extension with the Australian Stock Exchange and did not disclose the value of the contract.
Under the contract, Worley said it will provide detailed engineering, design and construction management services for the J-IC project’s power transmission and communication components.
ABB said it had been appointed by Chevron and Aker Solutions to provide power from shore and subsea long step-out to the Jansz-Io field, with the order booked for Q3 2021.
The Jansz-Io field is located 200 km off the northwest coast of Australia, at water depths of 1,400 m. The field is a part of the Chevron-operated Gorgon natural gas project, one of the world’s largest natural gas developments, and the J-IC project, which moves gas from deepwater reserves to shore, marks only the third time subsea compression technology is being deployed, and the first time the technology has ever been deployed outside of Norwegian offshore projects.
The project will involve constructing and installing a 27,000-tonne (topside and hull) normally unattended floating field control station, approximately 6,500 tonnes of subsea compression infrastructure and a 135-km submarine power cable linked to Barrow Island.
Aker Solutions was selected to deliver the subsea gas compression system for the Jansz-Io project, which will supply gas to the Gorgon LNG plant in Western Australia. The contract was expected to have been valued at Nkr7Bn (US$800M).
Worley’s contract extension follows the company’s successful completion of the pre-FEED and FEED phases of the project. The services will be executed by Worley’s Perth office.
Chevron Australia announced its final investment decision on the US$4Bn J-IC project, and construction and installation are expected to take five years to complete with work scheduled to begin H2 2022.
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, ExxonMobil, Shell, Osaka Gas, Tokyo Gas and JERA.
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