Hussein al-Shahristani told reporters in Baghdad that oil producers would not necessarily operate at full capacity, but would take into account demand.
Saudi Arabia, the world’s largest oil exporter, has a capacity of 12.5m bpd.
Earlier, a joint bid by Russian and Norwegian oil firms won the contract for the “supergiant” West Qurna field, said to have reserves of 13bn barrels.
Lukoil and Statoil will get $1.15 a barrel and will work to raise output from West Qurna Phase 2, in the Basra region, to 1.8m bpd. In June, a winning bid to develop another Iraqi field received $2 a barrel.
On Friday, the contract to develop the 12.6bn-barrel Majnoon field in southern Iraq was won by a consortium led by Shell. It also pledged to increase daily production to 1.8m barrels, up from only 46,000.
Rights for the eastern Halfaya field, with 4.1bn barrels of reserves, went to a consortium led by the Chinese state oil company, CNPC.
But the East Baghdad field, part of which lies under the city’s Sadr City area, and another in the Diyala province attracted no bids.
If a daily total of 12m barrels was achieved, Iraq would overtake Russia and challenge Saudi Arabia for the position of the world’s largest oil producer. However, Riyadh says it could produce 15 bpd.
Iraq’s proven reserves now stand at 115bn barrels, below Iran’s 137bn and Saudi Arabia’s 264bn. But Iraq’s data dates from the 1970s, before improvements in technology transformed the industry.
Mr Shahristani declared that Iraq had “scores” of oilfields, including “supergiants” – fields of 5bn barrels or more – to offer international companies in the future.