Ukrainian military drones struck the Omsk oil refinery, Russia’s largest, located in Siberia about 2,700 km (1,700 miles) from Ukrainian-controlled territory near the Kazakhstan border, on July 6, 2026 [1, 2, 3, 4]. The attack caused fires and damaged key processing units including CDU-10 and the ELOU-AVT-11 main unit, critical to refinery operations [1, 5, 4].

The strike forced the Omsk refinery to halt refining operations, worsening fuel shortages across Russia [5]. The facility processed roughly 22-23 million metric tons of oil per year (about 440,000-460,000 barrels per day), producing large volumes of petrol and diesel critical to Russia's fuel supply [1, 5, 2, 3, 4]. CDU-10 alone had a capacity of 24,580 metric tons per day (around 38% of plant capacity), while CDU-11, halted by damage to its support systems, processed 24,000 metric tons per day (37% of capacity) [5].

No casualties were reported from the raid. Omsk regional governor Vitaly Khotsenko confirmed, "Several Ukrainian drones reached Omsk's northern industrial hub. No casualties reported; emergency services are dealing with aftermath" [1]. Putin's representative in Siberia, Anatoly Seryshev, echoed that no plant personnel were injured and damage assessment was ongoing [5].

The attack used upgraded Fire Point FP-1 long-range drones capable of flying 2,110 miles (3,397 km) and carrying payloads up to 60 kg, allowing strikes deep inside Siberia [4]. Ukrainian President Volodymyr Zelenskyy called the strike "a significant blow to Russia's oil economy and an important achievement for the Armed Forces of Ukraine," citing the drones' extended reach [3].

The Omsk refinery assault is part of a wider Ukrainian campaign targeting Russian oil refineries, ports, and energy infrastructure to disrupt fuel supplies [1, 2, 6, 7]. Ukraine increased drone attacks on such targets across Russia in early July 2026 [1, 6, 7].

Officials reported the refinery processing units remained offline as of July 7 following the damage, and emergency crews continued recovery efforts [5].