As oil prices sag despite OPEC’s renewed efforts to shore up world crude markets, Wall Street banks have more bad news for the producer group: the outlook for next year isn’t great either.

"When these factors are taken together I can only conclude that the supplies coming from marginal barrels including shale production will not be sufficient to meet the future need for incremental capacity the mid-term," Falih said. "The market balance is already pointing in that direction," he added.

OPEC Member Countries and non-OPEC parties, Azerbaijan, Kingdom of Bahrain, Brunei Darussalam, Kazakhstan, Malaysia, Mexico, Sultanate of Oman, the Russian Federation, Republic of Sudan, and the Republic of South Sudan, taking into account the decision reached by OPEC at the 172nd Meeting of the Conference, recognized the need for continuing cooperation among oil exporting countries in order to achieve a lasting stability in the oil market.

Ministers from the Organization of Petroleum Exporting Countries and its allies meet in Vienna to decide whether to prolong their agreement. Major producers including Saudi Arabia, Russia and Iraq favor an extension for nine months and, while other options will be discussed, consensus is building around an agreement that runs through next March.

Russia itself is now slightly overcomplying with its commitment to cut 300,000 b/d of oil production from October levels, having achieved a 310,000 b/d cut since the beginning of the month.

As a major buyer of OPEC crude, India is hoping to leverage its ties with the oil producer bloc to gain "preferential treatment," the country's petroleum minister Dharmendra Pradhan told.

Members of the Organization of the Petroleum Exporting Countries (OPEC) earned about $433 billion in net oil export revenues in 2016, the lowest since 2004. In real dollar terms, the 2016 revenue represents a 15% decline from the $509 billion earned in 2015, mainly because of the fall in average annual crude oil prices and, to a lesser extent, because of decreases in OPEC net oil exports.

Algerian energy minister Noureddine Boutarfa said Thursday he believes there is a consensus among countries participating in the OPEC/non-OPEC oil production cut deal regarding the necessity to extend the agreement by nine months through March 2018.

OPEC will decide formally whether to extend the cuts when its ministers meet in Vienna on May 25. The producer group and other major suppliers including Russia agreed last year to cut their collective production by about 1.8 million barrels a day for the first half of 2017 in an effort to reduce bloated global stockpiles and re-balance the market.

"The good news is that the market is moving towards rebalancing," Saudi Aramco CEO Amin Nasser said at the International Oil Summit in Paris last week. "There has also been a rapid drawdown of floating storage in the first quarter of this year. This is being driven by improving fundamentals and the OPEC deal."