Oil India Limited (OIL) is a central public sector undertaking under the Ministry of Petroleum and Natural Gas, Government of India. Established in 1959, OIL focuses on the exploration, development, and production of crude oil and natural gas. It is recognized as India�s second largest national upstream oil and gas company, with operations primarily in the northeastern region and Rajasthan.

OIL's core activities include exploration and production of hydrocarbons, transportation of crude oil, and refining through its subsidiary, Numaligarh Refinery Limited, which has a capacity of 3 million metric tons per annum. The company also produces liquefied petroleum gas (LPG) and has ventured into renewable energy projects, including wind and solar power. With a strong presence both domestically and internationally, OIL plays a vital role in supporting India�s energy security and serves a diverse customer base across various industries.