Lukoil LKOH.MM posted a first-quarter profit of 133.4 billion roubles ($2 billion) on Wednesday, up more than tenfold year on year under Russian Accounting Standards (RAS).
Lukoil also said its January-March revenue rose to 723.2 billion roubles from 330.9 billion a year earlier.
The oil producer has said it will not publish first-quarter financial and operational data under International Financial Reporting Standards.
RAS standards usually do not take into account data from subsidiaries.
