State-giant Saudi Arabian Oil Co., or Saudi Aramco, said Sunday it has completed, ahead of schedule, the second stage of the kingdom's first offshore non-associated gas field, to meet growing domestic needs.

The firm managed to raise output from 500 million standard cubic feet of fuel a day last year to about 1 billion standard cubic feet after completing treatment and sulfur-recovery units, it said in a statement posted on its website.

The Karan field is scheduled for completion in 2013 with a planned production capacity of 1.8 billion standard cubic feet a day of raw dry gas.

Karan and other offshore non-associated gas field projects are aimed at quenching the kingdom's soaring demand for energy, which is needed to fuel electricity stations and industrial complexes in the rapidly growing economy.

The gas from Karan is being transported to the onshore Khursaniyah Gas Plant via subsea pipeline, Aramco has said.