India's largest petroleum explorer Oil and Natural Gas Corporation (ONGC) will invest Rs 4,254 crore to drill 656 wells. These wells will be drilled in 52 Petroleum Mining Lease (PML) in the company’s Ahmedabad asset in Gujarat. The drilling activity is planned from 2019-20 to 2025-26. Also, the firm has planned a complete roadmap for its growth for the next two decade.