Cash reserves of Russia's third-largest oil producer Surgutneftegaz increased by 31.2 percent to 2.42 trillion roubles ($35.8 billion) in 2015, Interfax news agency reported on Wednesday.
It also said that Surgut's 2015 net income under Russian Accounting Standards declined to 751.4 billion roubles from 891.7 billion roubles in 2014.
(Reporting by Vladimir Soldatkin)