Ukrainian drones just hit the Omsk Oil Refinery, Russia’s single largest refining facility, in what appears to be the deepest drone strike of the entire conflict. The target sits in Siberia, more than 2,500 km from the front lines.

The refinery, owned by Gazprom Neft, processes approximately 23 million metric tons of oil annually, roughly 460,000 barrels per day.

What happened at Omsk

The strike, confirmed by Ukraine’s General Staff and corroborated by open-source intelligence projects, hit on or around July 6, 2026. The primary oil processing unit, designated ELOU-AVT-11, suffered partial capacity damage.

The Omsk refinery’s design throughput for its core unit alone is 8.4 million tons per year. Since March 2026, Ukrainian forces have struck at least eight of Russia’s ten largest refineries. Estimates suggest between 25% and 43% of total Russian refining capacity has been affected, contributing to domestic fuel shortages that Moscow has struggled to manage.