The potential collapse of the group led by Saudi Arabia and Russia is the latest blow to a market that was already dragged down by fears over the economic damage from the spread of the coronavirus
Russia and Kazakhstan, both members of the broader and informal group known as OPEC+, said they had not yet agreed to a deeper cut
The splits on the way forward even within OPEC were on display on Wednesday as delegations arrived
The prolonged trade dispute has dampened oil demand and weighed on prices
The International Energy Agency said that most of that cut had already been implemented already
Data released on Sunday showed exports from China in November fell 1.1% from a year earlier, confounding expectations for a 1% rise in a Reuters poll.
OPEC is likely to shoulder 340,000 bpd in fresh cuts and non-OPEC producers an extra 160,000 bpd, one source said on Friday
Existing supply curbs of 1.2 million barrels per day, aimed at supporting oil prices and preventing a global glut, are set to expire in March.
On Friday Brent and US crude both fell on concerns that talks to end the trade war between the United States and China
China and the United States had "constructive talks" on trade in a high-level call on Saturday
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