The Oil and Natural Gas Corporation Limited is an Indian central public sector undertaking which is the largest government-owned oil and gas explorer and producer in the country. It accounts for around 70 percent of India's domestic production of crude oil and around 84 percent of natural gas. Headquartered in Delhi, ONGC is under the ownership of the Government of India and administration of Ministry of Petroleum and Natural Gas. It was founded on 14 August 1956 by the Government of India. In November 2010, the Government of India conferred the Maharatna status to ONGC. In a survey by the Government of India for fiscal year 2019–20, it was ranked as the largest profit making Central Public Sector Undertaking in India. It is ranked 5th among the Top 250 Global Energy Companies by Platts. ONGC is vertically integrated across the entire oil and gas industry. It is involved in exploring for and exploiting hydrocarbons in 26 sedimentary basins of India, owns and operates over 11,000 kilometers of pipelines in the country and operates a total of around 230 drilling and workover rigs. Its international subsidiary ONGC Videsh currently has projects in 15 countries. Wikipedia