On August 2, Ukrainian forces launched a drone attack that took offline two major refineries operated by Russian oil company Rosneft. The Ryazan Oil Refining Company, Rosneft’s largest refinery, has halted operations at about half capacity, while the Novokuibyshevsk Refinery has been completely shut down since the attack.
The Ryazan Refinery processes 13.7 million tons of oil annually, making it Rosneft’s largest facility and one of the top five refineries in Russia. It plays a critical role in supplying fuel to the Moscow region. In 2024, the plant processed 13.1 million tons of oil, accounting for approximately 4.9% of Russia’s total refining volume. Following the attack, two of its three main refining units—KDU-3 (8,600 tons/day) and KDU-4 (11,400 tons/day)—were shut down. Only the KDU-6 unit (23,200 tons/day) remains operational, which is about 48% of the refinery’s total capacity.
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Meanwhile, the Novokuibyshevsk Refinery, which has an annual capacity of 8.3 million tons, has been completely shut down. Reports indicate that the plant’s main refining unit, KDU-11 (18,900 tons/day), was damaged in the attack. Its second unit, KDU-9 (4,700 tons/day), was already offline for scheduled maintenance until early September.
According to The Moscow Times, it remains unclear how long repairs will take. For the Ryazan refinery, sources estimate that partial repairs could take anywhere from “a few days to several weeks.”
