By Ron Bousso
LONDON (Reuters) - Oil prices hit $80 a barrel on Thursday for the first time since November 2014 on concerns that Iranian exports could fall because of renewed U.S. sanctions, reducing supply in an already tightening market.
Brent crude futures reached an intraday high of $80.18 a barrel before receding to $79.67 at 1326 GMT.
U.S. West Texas Intermediate (WTI) crude futures were up 41 cents at $71.90 after also hitting their highest since November 2014, at $72.30 a barrel.
U.S. President Donald Trump's decision this month to withdraw from an international nuclear deal with Iran and revive sanctions that could limit crude exports from OPEC's third-largest producer has boosted oil prices.
France's Total on Wednesday warned that it might abandon a multibillion-dollar gas project in Iran if it could not secure a waiver from U.S. sanctions, casting further doubt on European-led efforts to salvage the nuclear deal.
A rapid decline in Venezuela's crude production has further roiled markets in recent months.
"The geopolitical noise and escalation fears are here to stay," said Norbert Rücker, head of macro and commodity research at Swiss bank Julius Baer. "Supply concerns are top of mind after the United States left the Iran nuclear deal."
Several banks have in recent days raised their oil price forecasts, citing tighter supplies and strong demand.
Further supporting prices, Shell on Thursday said it was halting crude exports from a major Nigerian pipeline.
On the flip-side, however, high oil prices could hit consumption, the International Energy Agency warned on Wednesday as it lowered its global oil demand growth forecast for 2018 to 1.4 million barrels per day (bpd) from 1.5 million bpd.
Leading production increases is the United States, where crude output has soared by 27 percent in the last two years to a record 10.72 million bpd, putting it within reach of top producer Russia's 11 million bpd.
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