There's a split emerging in India's refining sector as private refiners tap cheap Russian crude and boost profits from exports just as domestically focused state refiners get squeezed by high oil costs and government-capped domestic fuel prices.

While many Western buyers are avoiding Russian crude in response to its invasion of Ukraine, Indian private refiners such as Reliance and Nayara have been among the biggest buyers this year of discounted Russian supplies.

They are reaping major profits by reducing domestic sales and aggressively boost fuel exports, including to buyers in Europe, which is now boycotting imports of Russian energy.