OPEC and its partners have been limiting supply since 2017
The field covers 2,400 square kilometres (926 square miles) and is located in Iran's southwestern province of Khuzestan, Rouhani said in a speech aired on state TV
OPEC's Mohammad Barkindo said he was more optimistic about the market outlook for next year than he had been in October
The state-owned firm is the world's largest oil producer, pumping 10% of the world's supply, and the most profitable company with its half-year net profit rising 12% to $46.9 billion.
International benchmark Brent crude futures, were at $57.61 a barrel by 0009 GMT, up 23 cents, or 0.4%, from their previous settlement
So far, Caracas & Tehran have been adamant that Opec doesn't need to boost production this year, and have warned against succumbing to pressure from Washington