The July 6, 2026 strike damaged part of a core processing unit at Gazprom Neft’s Siberian plant, extending Ukraine’s campaign against Russian refining infrastructure.
Ukrainian drones struck the Omsk Oil Refinery, Russia’s single largest refining facility, in what appears to be the deepest drone attack of the conflict so far. The site in Siberia lies more than 2,500 km from the front lines. The strike, confirmed by Ukraine’s General Staff and supported by open-source intelligence projects, hit on or around July 6, 2026 and caused partial capacity damage to the primary oil processing unit, ELOU-AVT-11. Omsk, owned by Gazprom Neft, processes about 23 million metric tons of oil a year, or roughly 460,000 barrels per day. Its core unit alone has design throughput of 8.4 million tons annually. The attack fits a broader Ukrainian effort to disrupt Russia’s fuel supply chain: since March 2026, Ukrainian forces have struck at least eight of Russia’s ten largest refineries, with estimates suggesting 25% to 43% of total Russian refining capacity has been affected, adding to domestic fuel shortages Moscow has struggled to contain.