(Rosneft) is the largest Russian Rosneft is the largest oil company in Russia, established in September 1995, with operations in all areas of oil and gas exploration, extraction and sales of refined products, and more than 50 subsidiaries in Russia. Rosneft has more than 50 subsidiaries in Russia. Rosneft operates in more than 20 regions of Russia. Rosneft's production activities follow the regional principle and consider the Far East, Siberia, the northwest and south of the European part of Russia as strategic development areas.