Ukrainian Drones Disable Two of Rosneft’s Largest Refineries

An August 2 drone strike by Ukrainian forces has taken offline two of Russia’s key oil refineries operated by Rosneft.

This was reported by Reuters news agency, citing sources familiar with the situation.

Rosneft’s largest refinery — the Ryazan Oil Refining Company — has halted operations at roughly half its capacity, while the Novokuibyshevsk refinery has completely ceased activity since the attack.

The Ryazan refinery processes 13.7 million tons of oil annually, making it Rosneft’s biggest facility and one of the top five oil refineries in Russia.

It plays a vital role in supplying fuel to the Moscow region. In 2024, the plant processed 13.1 million tons of oil, approximately 4.9% of Russia’s total refining volume.

Following the attack, two of its three primary refining units, KDU-3 (8,600 metric tons/day) and KDU-4 (11,400 tons/day), were shut down. Only the KDU-6 unit (23,200 tons/day) remains operational, representing about 48% of the refinery’s total capacity.

Meanwhile, the Novokuibyshevsk refinery, with an annual capacity of 8.3 million tons, was completely shut down. The plant’s primary oil refining unit, KDU-11 (18,900 tons/day), was reportedly damaged in the attack. The facility’s second unit, KDU-9 (4,700 tons/day), had already been offline for scheduled maintenance until early September.

Read more: Drones Strike Oil Refineries in Ryazan and Novokuibyshevsk

According to The Moscow Times, it remains unclear how long repairs will take. In the case of the Ryazan refinery, sources estimate the timeline for partial restoration may range from “a few days to several weeks.”