Russia’s largest oil refinery, the Omsk refinery, has halted processing following a Ukrainian drone attack, two industry sources say.
The strike, which took place on Monday deep inside Siberia, was one of Ukraine’s longest-range drone attacks since the start of the war. The suspension of operations at the refinery, Russia’s largest producer of gasoline, is expected to worsen fuel shortages across the country.
Anatoly Seryshev, President Vladimir Putin’s envoy to Siberia, confirmed that refinery facilities were damaged in the attack but said no employees were injured.
“Facilities at the Omsk oil refinery were damaged as a result of the attack. No plant personnel were injured. Damage assessment is currently under way, and restoration work has been organized,” Seryshev said.
Industry sources say the refinery’s CDU-10 crude distillation unit, which accounts for about 38% of the plant’s processing capacity and can refine 24,580 metric tons of crude per day, caught fire and sustained damage during the strike.
A second primary processing unit, CDU-11, which represents another 37% of the refinery’s capacity and processes around 24,000 metric tons of oil daily, was also shut down. Although it was not directly hit, sources said essential network infrastructure required for its operation was damaged. The unit, which entered service in 2023, could reportedly resume operations in the near future.
Following the attack, the Omsk refinery stopped offering gasoline and diesel on the Saint Petersburg International Mercantile Exchange beginning Tuesday.
The refinery has two older, mothballed crude processing units with a combined capacity of 20,000 metric tons per day that could theoretically be restarted to partially offset the disruption.
Based on the industry data, the Omsk refinery processed around 22 million metric tons of crude oil—approximately 440,000 barrels per day—in 2024, producing about 5 million metric tons of gasoline and 8 million metric tons of diesel.
