Ukrainian FP-1 drones struck the Gazprom Neft oil refinery in Omsk, Siberia, on July 6 after flying roughly 2,500 km over more than 12 hours, halting operations at Russia's largest gasoline producer, according to a report from UK pub The Telegraph. It was the longest-range Ukrainian drone strike of the war, carried out by an aircraft built around a plywood load-bearing structure, foam wings, and a two-cylinder piston engine, at an estimated cost of $55,000 per unit.
Despite its lightweight structure, the drone managed to cause some pretty severe damage, setting fire to the CDU-10 crude distillation unit per Reuters, which handles 24,580 metric tons of crude per day and accounts for around 38% of the plant's processing capacity. A second unit, CDU-11, responsible for a further 37%, was shut down after network links vital to its operation were damaged. The refinery, which processed 22 million metric tons of crude (about 440,000 barrels per day) in 2024, stopped selling gasoline and diesel on the St. Petersburg International Mercantile Exchange the following day.
