U.S. West Texas Intermediate (WTI) crude futures CLc1 were at $62.10 a barrel at 0445 GMT, up 47 cents, or 0.8 percent, from their last close. They hit $62.14 shortly before, the highest level since May 2015.
Brent crude futures LCOc1 - the international benchmark for oil prices - were at $68.13 a barrel, up 29 cents, or 0.4 percent, after hitting a May-2015 high of $68.16 shortly before.
Beyond a brief intraday spike in May, 2015, these were the highest crude price levels since December, 2014, at the start of the oil price downturn.
Freezing weather in the United States has also spurred short-term demand, especially for heating oil.
“The market is clearly getting more bullish on oil as inventory levels get closer to the five-year average. Geopolitical uncertainty in Iran, OPEC’s third largest producer, is also helping to support the price as citizens are again protesting the government,” said by William O‘Loughlin, investment analyst at Australia’ Rivkin Securities.
Iran’s elite Revolutionary Guards have deployed forces to three provinces to put down anti-government unrest that has been ongoing for a week, their commander said on Wednesday.
In the United States, crude oil inventories fell by 5 million barrels in the week to Dec. 29 to 427.8 million barrels, industry group the American Petroleum Institute said on Wednesday.
Potentially undermining the trend toward tighter market conditions is U.S. oil production C-OUT-T-EIA, which has risen by almost 16 percent since mid-2016, hitting 9.75 million barrels per day (bpd) at the end of last year.
Official U.S. Energy Information Administration (EIA) storage and production data is due on Thursday.
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