The contract includes the provision of wellsite, gas production and water treatment facility maintenance and other major works for the project. Origin is the upstream operator of Australia Pacific LNG.

The two-year contract has the option for extension of the term by one year.

Under the contract, Upstream PS will be responsible for completion of scheduled and unscheduled maintenance and associated services for a minimum of 1500 wells, seven gas processing facilities, nine water gathering systems, two water treatment facilities and one pre-treatment facility.

The contract is expected to generate revenue of around $50m for the company in the initial term.

Upstream PS managing director, Joe Corvetti said: "We commend our Queensland team’s strong track record of performance since having commenced maintenance activities with Australia Pacific LNG in August 2014, which has led to the award of this additional CSG-LNG Contract. Upstream PS is proud to be playing a role in this transformational project for Origin and Australia Pacific LNG."

Upstream PS QLD/NSW regional manager, Cameron Wills said: "Our team looks forward to continuing to deliver value-added solutions, drawing on specialist CSG capability and collaborating with our client to deliver safe and efficient maintenance and operations services whilst maximising plant availability."

The company has also entered into an operations and maintenance services agreement (Contract) with Northern Oil and GasAustralia (NOGA) to operate and maintain the Northern Endeavour floating production storage and offloading facility (FPSO) and associated infrastructure.