Contractors have submitted bids for the main contract for Saudi Aramco’s Hawiyah gas plant expansion project, according to a source close to the scheme.

The deal is estimated to be worth between $1.0bn and $1.3bn, and is part of a larger megaproject to expand gas processing capacity at Haradh and Hawiyah, which is expected to be worth $4.5bn

 Bids were submitted for the expansion project after a series of extensions to the deadline. Initially the deadline was set for 3 July 2017. This was subsequently pushed back to 1 August, then to 13 August.

The scheme will increase the Hawiyah plant’s capacity to 1,360 million cubic feet a day.

The following companies were prequalified to bid for the deal: