The OPEC+ oil cartel agreed on Monday to cut production for the first time in more than a year as it seeks to lift prices that have tumbled due to recession fears.
The move could irk the United States as it has pressed the group to increase output in order to bring down energy prices that have fuelled decades-high inflation.
OPEC+, a 23-nation coalition led by Saudi Arabia and Russia, had agreed to huge cuts in output in 2020 when the Covid pandemic sent oil prices crashing, but it began to increase production modestly again last year as the market improved.
Oil prices soared to almost $140 a barrel in March after Russia invaded Ukraine.
But they have since receded below $100 per barrel amid recession fears, Covid lockdowns in major consumer China and Iran nuclear talks that could bring Iranian crude back into the market.
While analysts expected another modest increase at Monday's ministerial meeting, OPEC+ said in a statement it decided to reduce output by 100,000 barrels per day in October, returning to the production level of August.
The group also left the door open to holding talks prior to its next scheduled meeting on October 5 "to address market developments, if necessary".
Saudi Energy Minister Prince Abdulaziz bin Salman told Bloomberg in an interview after the decision that it demonstrated OPEC+ was ready to adjust production in both directions to achieve its objectives.
"The simple tweak shows that we will be attentive, preemptive and proactive in terms of supporting the stability and the efficient functioning of the market," he said.
Bjarne Schieldrop, the chief commodities analyst at SEB research group, told AFP the decision sent a clear message: "OPEC+ will not allow the oil price to slide. Further cuts will be initiated if necessary."
While analysts said the cut was mostly symbolic, oil prices rose by more than three percent following the announcement, with the international benchmark, Brent, exceeding $96 per barrel while the US contract, WTI, reached almost $90.
At its last meeting, OPEC+ agreed to a small rise of 100,000 barrels per day for September after US President Joe Biden travelled to Saudi Arabia to plead for a production bump - although it was six times lower than its previous decisions.
But after oil prices fell back on growing recession worries, the cartel began to raise the possibility of reversing course.
The United States said after the OPEC+ decision that oil production must be kept up to bolster global economic growth.
President Joe Biden "has been clear that energy supply should meet demand to support economic growth and lower prices for American consumers and consumers around the world", White House Press Secretary Karine Jean-Pierre said in a statement.
Craig Erlam, analyst at OANDA trading platform, said the cut was "also a blow to President Biden as the hike last month was viewed as a token gesture after his visit."
"Now it's clear how valuable that actually was, or wasn't as it turns out. The political damage it caused was a waste and if anything, it looks worse than if nothing had changed in the first place," Erlam said.
Caroline Bain, commodities expert at Capital Economics, said the cut was not a total surprise and "little more than symbolic" as OPEC+ has struggled to meet its quotas due to lacklustre production in some of its member countries.
"The bigger picture is that OPEC+ is producing well below its output target and this looks unlikely to change given that Angola and Nigeria, in particular, appear unable to return to pre-pandemic levels of production," Bain said.
In efforts to curb rising oil prices, the United States and its allies have released crude from their emergency reserves.
And in a bid to curb Russia's war funding, the G7 group of industrialised powers agreed on Friday to move "urgently" towards capping the price of Russian oil.
Moscow has warned it will no longer sell oil to countries that adopt the unprecedented mechanism and called it a destabilising force in the market.
Another geopolitical issue is clouding the outlook.
Negotiations aimed at reviving a landmark nuclear deal between Tehran and world powers could lead to an easing of oil sanctions in return for curbs on their atomic activities.
However, Washington said on Thursday that Tehran's latest response to a European Union draft was "unfortunately... not constructive".
The EU's foreign policy chief Josep Borrell, who is shepherding attempts to save the suspended Iran nuclear deal, said on Monday that recent exchanges left him "less confident" about reaching an agreement.