Indian Oil Corp, the country's top refiner, bought three million barrels of Russian Urals from trader Vitol for May delivery, trade sources said, its first purchase of the grade since Russia invaded Ukraine on February 24.
Western sanctions against Russia have led many companies and countries to shun its oil, depressing Russian crude to record discount levels.
IOC said in late February it would buy Russian oil on delivered basis to avoid any complication relating to fixing vessels and insurance.
Sources said IOC does not see any problem in paying for the cargo as oil as a commodity is not banned and it was not dealing with a sanctioned entity.
Vitol sold the cargoes at a discount of $20-$25 a barrel to dated Brent, one of the sources said. The companies typically do not comment on commercial deals.
Separately, IOC also bought two million barrels of Abu Dhabi's Murban crude and one million barrels each of Nigeria's Akpo and Forcados, and Cameroon's Kole, they said.
Price details were not immediately available.
