ONGC, or Oil and Natural Gas Corporation, is an Indian multinational company engaged in the exploration and production of oil and natural gas. Established in 1956, it is one of the largest oil and gas companies in India and plays a crucial role in the country's energy sector. ONGC operates both onshore and offshore fields, contributing significantly to India's energy needs. The company is a public sector enterprise, and its operations extend beyond India, with investments in various countries. ONGC is also involved in refining, petrochemicals, and renewable energy initiatives, aiming to diversify its energy portfolio and reduce carbon emissions.