MOSCOW (Reuters) -Primary oil processing at Russia’s Novokuibyshevsk refinery, which is operated by the Rosneft oil company, has been halted since August 2 following a Ukrainian drone attack last week, two industry sources said.
That was the first time a major Russian refinery had been attacked by a drone since March 2025.
It came after U.S. President Donald Trump last Monday set a 10-12-day deadline for Moscow to agree on a ceasefire with Kiev or face consequences, underscoring his frustration over the continuing 3-1/2-year-old conflict.
U.S. special envoy Steve Witkoff is expected to travel to Russia this week after his current visit in Israel.
The refining capacity of Novokuibyshevsk is 8.3 million metric tons of oil per year (or some 160,000 barrels per day).
Rosneft did not respond immediately to a request for comment.
According to the sources, the attack damaged the main primary oil refining unit CDU-11 at the Novokuibyshevsk refinery.
The refinery has two primary units: CDU-11 with a capacity of 18,900 metric tons per day, and CDU-9 with a capacity of 4,700 tons per day.
The refinery planned to stop CDU-9 for a major scheduled maintenance from August to early September.
According to the sources, the Novokuibyshevsk oil refinery was recently processing about 18,000 tons of crude oil per day.
Last year, the refinery processed 5.74 million tons of crude oil, produced 1.10 million tons of motor gasoline, 1.64 million tons of diesel fuel, and 1.27 million tons of fuel oil, according to industry sources.
(Reporting by Reuters in Moscow; Editing by Bernadette Baum)
