Which of the following are the downstream oil and gas companies in India?

The upstream segment is responsible for finding and producing crude oil and natural gas. This includes searching for potential oil fields, drilling exploratory wells, and examining whether they have the potential to deliver a sizable amount of oil. Oil & Natural Gas Corporation (ONGC) Oil India Limited (OIL) Reliance Industries Ltd Larsen & Toubro Ltd BP Plc   Downstream oil companies are involved in the refining, manufacturing, and marketing of petroleum products. This segment consists of oil refineries, petrochemical plants, and fuel distributors/retailers. They offer products such as petrol, diesel, natural gas, jet fuel, synthetic rubber, plastics, pesticides, pharmaceutical ingredients, and much more. Thus, downstream oil companies oversee the critical final steps of refining and converting crude oil into final products, which are then sold to end-consumers. Indian Oil Corporation Ltd (IOCL) Hindustan Petroleum Corporation Ltd (HPCL) Bharat Petroleum Corporation Ltd (BPCL)