Russia’s Syzran oil refinery has halted crude processing after a Ukrainian drone strike damaged key equipment on 5 December, according to industry sources quoted by Reuters.
The refinery, owned by state-controlled oil company Rosneft, is located on the Volga River in Samara region and has an annual processing capacity of around 4.3 million tonnes, equivalent to about 90,000 barrels per day.
Two industry sources said unmanned aerial vehicles struck the refinery’s CDU-6 crude distillation unit, the primary facility for initial processing of crude oil. The same unit was hit in an earlier attack in August and then required about two weeks of repair work. This time, one source estimated that repairs could take roughly a month, effectively keeping the plant offline into early January if the timeline is confirmed.
The Ukrainian military said on 5 December that it had conducted long-range strikes overnight against an oil refinery in Syzran and port infrastructure at Temryuk in Russia’s Krasnodar region. The General Staff of Ukraine’s Armed Forces later confirmed that drones had been used against both targets.
Ukrainian officials present these strikes as part of a broader campaign aimed at degrading Russia’s capacity to supply fuel to its armed forces and to generate export revenues from oil products. Since early 2025, Kyiv has increasingly used long-range drones to hit refineries, oil depots and export terminals deep inside Russian territory, including facilities in Ryazan, Saratov, Volgograd, Novokuibyshevsk and at the Black Sea port of Novorossiysk.
Russia has absorbed a significant volume of disruption by using spare refining capacity elsewhere in the system. According to earlier industry estimates, a combination of drone attacks and planned maintenance temporarily removed around 20% of Russia’s oil refining capacity from operation at various points in 2025, but total throughput for the year fell by only about 3%, as undamaged plants increased runs and damaged units were repaired.
The Syzran refinery forms part of Rosneft’s Samara cluster, which also includes the Novokuibyshevsk and Kuibyshev refineries. These plants process crude from fields in the Volga-Urals region and supply fuel to the domestic market as well as export streams via pipeline and rail. Industry data indicate that in 2024–25 the Syzran plant produced roughly 800,000 tonnes of petrol, 1.5 million tonnes of diesel and 700,000 tonnes of fuel oil annually.
The plant has already faced repeated disruption this year. In February, operations were suspended after an earlier drone strike triggered a fire at the same CDU-6 unit. Ukrainian and Russian sources also reported a halt in August following further damage, with crude processing resuming only after repairs were completed.
The December attack appears to have again forced a full stop to primary processing. The extent of secondary unit damage, and the impact on product loadings from storage, remains unclear. Analysts note that while Russia can reroute some crude to other refineries and draw on stocks to meet short-term domestic demand, repeated outages increase maintenance costs and complicate logistics, particularly under sanctions that restrict access to Western equipment and technology.
The strike on Syzran coincided with attacks on infrastructure linked to Russian oil exports from the Black Sea. On the same night, Ukrainian drones hit facilities at Temryuk, a port in Krasnodar region used for handling oil and petroleum products, with local authorities reporting fires and damage. These operations followed an earlier naval drone attack that reduced loading capacity at the Caspian Pipeline Consortium’s terminal near Novorossiysk, a key outlet for Kazakh crude transported via Russia.
Both sides have targeted energy sites throughout the year. Russia has repeatedly struck Ukrainian power infrastructure with missiles and drones, aiming at electricity generation, transmission facilities and fuel storage, leading to rolling blackouts in several regions. Ukraine, lacking comparable missile stocks, has relied heavily on domestically produced long-range drones for its strikes inside Russia.
International oil prices have so far reacted more to broader macroeconomic factors and Middle East developments than to individual attacks in Russia, as the market has assessed that Moscow can offset most of the lost capacity and maintain export volumes in the near term. However, industry analysts point to a growing cumulative effect from damage to multiple refineries, crude terminals and storage sites, particularly if repair times lengthen and spare capacity is gradually exhausted.
For now, the halt at Syzran adds to the list of refineries operating below capacity or temporarily offline as a result of the drone campaign. Whether the plant returns to full operations within weeks, as some sources suggest, will depend on the scale of damage to CDU-6, the availability of replacement parts and the ability of engineers to work amid continued air defence alerts.
Ukrainian strike forces shutdown of oil exports from Novorossiysk
