The contract is expected to generate approximately AU$250 million in revenue to Leighton over 18 months.
“We are pleased to continue our valued partnership with QGC and look forward to building on relationships formed with local subcontractors and suppliers,” Leighton Contractors Managing Director RomÃ¡n Garrido said.
Construction work is expected to being in late 2015 for completion in 2017.
QGC’s gas assets in the Surat Basin are connected to its Queensland Curtis LNG (QCLNG) Project on Curtis Island by a 340 km, 1,060 mm export pipeline.
QGC completed a world first with the QCLNG project in January 2015, exporting LNG produced from CSG in the basin.
BG Group holds a 93.75 per cent stake across the two-train development, along with Chinese state oil and gas producer CNOOC (10 per cent) in the first train and Japan’s Tokyo Gas (2.5 per cent) in the second train.