https://www.energywatch.in/oil-and-gas/ongc-spuds-first-deepwater-well-in-mahanadi-basin-under-samudra-manthan-mission https://media.assettype.com/energywatch/2025-06-20/wr368gfe/ongc-energy-watch.jpg ONGC spuds first deepwater well in Mahanadi basin under Samudra Manthan mission energywatch en 2026-07-27T09:00:36.312Z ONGC spuds first deepwater well in Mahanadi basin under Samudra Manthan mission Oil & Gas, Hardeep Singh Puri, ONGC, deepwater exploration, ultra-deepwater exploration, Mahanadi offshore basin