Brent oil prices are hovering near 26-month highs today, supported by Turkey's threat to cut crude exports from Iraq's Kurdistan region and signs of quicker market re-balancing.
Turkish President Tayyip Erdogan repeated a threat to cut off the pipeline that carries 500,000-600,000 barrels per day (bpd) of crude from northern Iraq to the Turkish port of Ceyhan, intensifying pressure on the Kurdish autonomous region over its independence referendum.
This potential loss, combined with 1.8m bpd of output reductions by the Organization of the Petroleum Exporting Countries and non-OPEC producers, raised concerns of tighter supply.
The Iraqi government said it will not hold talks with the Kurdistan Regional Government about the results of the referendum, which is expected to show a comfortable majority in favour of independence after the results are announced later this week.
"Although there was plenty of price-bullish news making headlines yesterday, undoubtedly the biggest factor was the referendum in the Kurdistan region of Iraq," analysts at Vienna-based JBC Energy said in a note.
Brent crude futures fell 53 cents to $58.49 a barrel by 13.11pm Irish time, having hit $59.49, the highest since July 2015 and more than 34% above the 2017 low.
US crude futures slid 25 cents to $51.97 a barrel, after hitting a five-month high of $52.43.
Top oil executives gathered at the S&P Global Platts APPEC conference in Singapore said strong oil demand this year was accelerating market re-balancing and helping inventory drawdowns.
"Global demand growth is way higher than what we have observed in the last couple of years, coming somewhere close to 1.6m to 1.7m barrels per day and is driven by distillates," said Janet Kong, BP's chief executive officer, supply and trading, Eastern Hemisphere.
OPEC and non-OPEC producers meeting in Vienna last week said the market was well on its way towards re-balancing.
However, other analysts were sceptical about further price gains due to higher oil output from the United States.
The US Energy Information Administration said production from wells in shale formations would rise for a 10th month in a row in October.
US shale producers' ability to ramp up output as later-dated crude prices strengthen will keep price volatility low, said Jeffrey Currie, Goldman Sachs' head of global commodities research.