Russia's Black Sea port of Novorossiysk temporarily suspended oil exports - equivalent to 2.2 million barrels per day, or 2 percent of global supply - on Friday, according to industry sources, after a Ukrainian missile and drone attack.

The attack was one of the biggest on Russian oil-exporting infrastructure in recent months. It follows a ramping-up of Ukrainian strikes on Russian oil refineries since August, part of an attempt by Kyiv to degrade Moscow's ability to finance its war.

Global oil prices rallied by more than 2 percent on supply fears after the attack.

Long-range Ukrainian air and sea drone strikes have repeatedly disrupted Russian oil infrastructure this year, targeting Baltic and Black Sea ports, a trunk pipeline system, and a number of oil refineries.

Ukraine's General Staff said its forces had fired Neptune cruise missiles and used various types of strike drones in the attack on Novorossiysk "as part of efforts to reduce the military and economic potential of the Russian aggressor".

Ukraine said it separately struck an oil refinery in Russia's Saratov region and a fuel storage facility in nearby Engels overnight.

Russian pipeline oil monopoly Transneft has also been forced to suspend supplies to the port of Novorossiysk, the sources told Reuters. The company declined to comment.

Russian officials said Friday's attack had also damaged a docked ship, apartment buildings and an oil depot in Novorossiysk, injuring three of the vessel's crew members. (Reuters)