Oil and Natural Gas Corporation Limited is India's largest state-owned oil and gas corporation.
Aggressive selling of Russian Sokoil to other Indian Nationalised Energy corps. Singh said that there is no sanction on Russian oil and unless the government decides otherwise, ONGC group refiners Hindustan Petroleum Corporation (HPCL) and Mangalore Refinery and Petrochemicals (MRPL)–are free to buy crude from Russia.