A GIANT gas project under construction near Gladstone has now eclipsed 11,000 workers after hiring at least 15 people every day for the past six months.

Developer QGC has now spent $14.9 billion of a $20 billion total in developing its Queensland Curtis LNG Project.

The QCLNG development will extract coal seam gas from the Surat Basin in South-West Queensland, funnel it via 540km of underground pipelines to the Curtis Island refinery off Gladstone will convert it into liquefied natural gas for export.

Of that, 80% was spent with Australian firms and 65% was paid to Queensland companies.

QGC managing director Derek Fisher said the group hired more than 2800 people in the past six months.

"A snapshot of current contracts shows we are investing nearly $1 billion in Gladstone and about $684 million in the Western Downs region," Mr Fisher said.

The first LNG is to be exported from 2014.