ONGC Strikes Gas in Deepwater Mahanadi Basin Off Odisha, a Boost for India's Energy Security Push
ONGC engineers proudly pose with the Tricolour after successfully striking natural gas in the Mahanadi deepwater basin off Odisha’s Konark coast — DC Image
Key Takeaways
- ONGC struck natural gas in deepwater well MN-DW18-1-H-D in the Mahanadi Basin, 43 km off Konark, Odisha.
- This marks the maiden success under the Centre's 'Samudra Manthan' deepwater exploration campaign.
- Drilled to 1,623 metres by the Platinum Explorer drillship, finding sustained gas flow between 1,441 and 1,452 metres.
- Proximity to shore and Petroleum & Natural Gas Rules 2025 enable potential shared-infrastructure cluster development and early monetisation.
- Appraisal and further drilling are underway to evaluate commercial viability and total reserve volume.
The discovery is the first success of ONGC's new deepwater campaign under the Samudra Manthan initiative.
Bhubaneswar, September 2026: Oil and Natural Gas Corporation (ONGC) has discovered natural gas in a deepwater exploration well in the Mahanadi Offshore Basin, roughly 43 km off the coast of Konark in Odisha. The state-run company says the find adds momentum to India's efforts to tap its offshore hydrocarbon resources and reduce its reliance on imported energy. Deccan Chronicle
The Discovery
The gas was struck on September 18 at the MN-DW18-1-H-D well, which is the first well ONGC has drilled in the Mahanadi Basin under the Centre's Samudra Manthan deepwater exploration campaign. The well was drilled to a target depth of 1,623 metres, and gas was found between 1,441 and 1,452 metres. The operation used the Platinum Explorer, a sixth-generation ultra-deepwater drillship. Deccan Chronicle
The early results look promising. After the subsurface data was evaluated, the well was perforated on September 18, and it has since shown encouraging gas flow with sustained reservoir pressure. Indianmasterminds
A Campaign with Ministerial Backing
The well, also called MDW-28, was spudded on July 25, 2026, by Petroleum and Natural Gas Minister Hardeep Singh Puri. Puri called the discovery a major milestone for India's offshore energy exploration, noting on X that it could enable cluster development with other finds in the area through shared facilities. Indianmasterminds Deccan Chronicle
Why Location Matters
Being close to the coast may help the find reach the market faster. ONGC says the site's relative proximity to shore could allow early monetisation, pending further appraisal and commercial evaluation. The company plans to assess this discovery together with other nearby finds for joint development through shared facilities, an approach made possible by the Petroleum and Natural Gas Rules, 2025. Offshore Technology Chemindigest
Building on Two Decades of Exploration
The Mahanadi Basin has been a long-term bet for ONGC. The company started deepwater exploration there in 2006 in the MN-DWN-98/3 block, and has since identified an estimated multi-trillion cubic feet of gas resources, including the Utkal and Konark offshore discoveries. The company is also expanding its drilling capacity. In August, ONGC signed a two-year binding letter of award with Transocean to bring the Dhirubhai Deepwater KG2 drillship to India. Chemindigest Offshore Technology
What Comes Next
It is too early to say how large the find is. The discovery does not yet establish a commercially exploitable reserve, and further drilling, testing, and appraisal are needed to determine the reservoir's extent, quality, and commercial viability. Deccan Chronicle
Even so, the result is a positive step for India's energy ambitions. ONGC has said it will keep pushing into deep and ultra-deepwater frontiers in pursuit of India's energy security goals. Offshore-Energy.biz
Frequently Asked Questions
Where did ONGC discover natural gas in Odisha?
ONGC discovered natural gas at exploration well MN-DW18-1-H-D in the Mahanadi Offshore Basin, located approximately 43 km off the coast of Konark, Odisha.
What is the Samudra Manthan campaign?
Samudra Manthan is India's national deepwater exploration campaign aimed at unlocking hydrocarbon reserves across frontier deep and ultra-deepwater offshore basins.
Which drillship was used for the Mahanadi well?
ONGC deployed the Platinum Explorer, a state-of-the-art sixth-generation ultra-deepwater drillship.
