Oil rose to around $56 a barrel on Tuesday, supported by Saudi Arabia's planned export cuts in November and comments from OPEC and trading companies that the market is rebalancing after years of oversupply.
Saudi Arabia said it will cut November allocations by 560,000 barrels per day, “the deepest customer allocation cuts in its history”, the kingdom said, in line with its commitment to an OPEC-led supply reduction pact.
In the United States, some production remains offline following Hurricane Nate, lending additional support, CNBC reported.
Brent crude, the international price benchmark, was up 32 cents at $56.11 a barrel. US crude gained 29 cents to $49.87.
"Prices have been boosted by news that Saudi Arabia is planning to reduce its oil shipments to customers in November," said Carsten Fritsch, analyst at Commerzbank in Frankfurt.
The Organization of Petroleum Exporting Countries, Russia and other non-member producers are cutting output by about 1.8 million barrels per day until next March to get rid of a price-sapping supply glut.
OPEC is increasingly confident that the market is rebalancing fast, helped by the cutback as well as by stronger-than-expected growth in global demand.
Torbjorn Tornqvist, chief executive of trading firm Gunvor, also said the market was rebalancing, citing falling product stocks and crude held in floating storage clearing up.
"We do not see this market being out of balance one way or another," he told the Reuters Global Commodities Summit taking place this week.
Overall crude stocks "are still high", he added, and OPEC needed to stick to its output curbs.
Short-term price support was coming from the United States, where 85% of US Gulf of Mexico oil production, or 1.49 million bpd, was offline following Hurricane Nate, according to official figures.
OPEC has managed record-high adherence to its supply cutting deal this year and is considering extending the deal beyond its March 2018 expiry. Some analysts have been concerned that a price recovery could tempt producers to open the taps again.
But analysts at JP Morgan said this was less of an issue, saying "concerns that OPEC compliance would fade into the fourth quarter now appear unfounded".
"Stronger-than-assumed economic growth offers the potential for tight market conditions to continue, if OPEC extends the current deal for another nine months," the bank said.