Piped exports of Russian crude have been disrupted since late April after high levels of organic chloride were found in oil sent via Druzhba to the Baltic port of Ust-Luga.
Belarusian President Alexander Lukashenko said last week his country had faced "enormous" costs due to the contamination and expected compensation from Russia, although the mechanism for any redress and who would pay remained unclear.
Novak said the cost of damage from contaminated oil in the Druzhba pipeline was less than $100 million (77.5 million pounds) and Russia may sell the poor-quality oil at a discount, RIA news agency reported.
The disruption of exports from Russia, the No.2 crude exporter after Saudi Arabia, has sent shockwaves through global oil markets and forced Moscow to cut its oil production to an 11-month low of around 11.16 million barrels per day.
(Graphic: Russian oil pipeline map:
Russian Deputy Prime Minister Dmitry Kozak will on Thursday discuss a resumption of oil supplies along Druzhba with his Belarusian counterpart Igor Lyashenko, Kozak's aide told reporters.
Belarus is a major transit route for Druzhba (Friendship). The Belarusian Mozyr oil refinery is a hub along the pipeline which splits there in two legs, one leading to Poland and Germany, another going south to Ukraine, Hungary and Slovakia.
On Wednesday, Russian oil pipeline monopoly Transneft said deliveries of clean Russian oil via the northern route of the pipeline to Poland and Germany were expected to start "in the near future".
Transneft also said clean oil would be delivered via the pipeline to Slovakia on May 21-22 and on May 23-24 to Hungary, Interfax news agency reported.
On Tuesday, pipeline operators from Ukraine, Russia, Belarus and other countries held crisis talks in Bratislava but the meeting yielded no concrete agreement. Talks will continue at a later date in Moscow.
The International Energy Agency said the impact on European refinery throughput in the second quarter of 2019 from the pipeline contamination is seen at roughly 250,000 barrels per day, under 2% of the continent's product demand.
(Reporting by Vladimir Soldatkin, Maria Grabar and Poliba Devitt; additional reporting by Ahmad Ghaddar in London; writing by Vladimir Soldatkin; Editing by Dale Hudson and Jason Neely)
By Vladimir Soldatkin