ONGC will invest ₹83,000 crore in 25 major projects to boost production, CMD Shashi Shanker said. Cumulative oil and gas gain from 15 of these projects is expected to be over 180 Million Metric tons of Oil equivalents (MMtoe) in their life cycle. ONGC celebrated Independence Day at 38 domestic work centres and its 40 overseas projects in 21 countries.