Oil prices increased their premiums from the previous day on Wednesday.
Market observers cited a US report that made the release of parts of the national oil reserve appear less likely.
In the morning, a barrel (159 liters) of North Sea Brent cost $ 85.18.
That was 40 cents more than the day before.
The price of a barrel of the American WTI variety rose 14 cents to $ 84.29.
"Bottleneck not permanent"
The evening before, prices had risen significantly, according to a report by the US Energy Agency (EIA).
Unlike some observers, statisticians see no permanent bottleneck on the oil market.
Rather, they expect an oversupply as early as the beginning of next year.
The prices are therefore likely to decline as early as December.
Highs were reached in October
The report speaks against releasing the US strategic oil reserve.
The background to such speculation is the rise in oil prices in recent months.
In October, the world's two most important types of oil had reached multi-year highs.
The trigger is the rapidly increasing demand after the Corona slump with a moderate expansion of supply from large producing countries such as Saudi Arabia or Russia.