18 October 2026
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ONGC Places NOA for Second Ultra-Deepwater Drillship to Accelerate Offshore Exploration

With its first ultra-deepwater rig already drilling in the Mahanadi Basin, ONGC expands deepwater capacity under the Samudra Manthan scheme to strengthen India’s energy security.
Indian Masterminds Stories

New Delhi: Oil and Natural Gas Corporation Limited (ONGC) has taken another major step to expand India’s offshore exploration programme by placing the Notice of Award (NOA) for hiring a second ultra-deepwater drillship.

The development comes as ONGC intensifies efforts to explore India’s deepwater hydrocarbon resources and strengthen the country’s long-term energy security.

Second Ultra-Deepwater Drillship to Expand Exploration

The hiring of the second ultra-deepwater drillship will add to ONGC’s existing offshore drilling capabilities and enable the company to accelerate exploration in challenging deepwater environments.

The move is part of ONGC’s broader strategy to unlock India’s offshore hydrocarbon potential and increase domestic energy availability.

Key Highlights

  • Company: Oil and Natural Gas Corporation Limited (ONGC)
  • Development: Notice of Award (NOA) placed for a second ultra-deepwater drillship
  • First ultra-deepwater rig: Already deployed for drilling
  • Current drilling location: Mahanadi Basin
  • Focus: Deepwater offshore hydrocarbon exploration
  • Strategic objective: Strengthening India’s energy security

Read also: ONGC and Shell Energy India Sign MoU to Expand Deepwater Exploration and Explore LNG Sourcing Opportunities 

First Ultra-Deepwater Rig Already Drilling in Mahanadi Basin

ONGC’s first ultra-deepwater rig is already deployed in the Mahanadi Basin, where it is currently drilling a deepwater well.

The deployment of the second drillship is expected to further expand ONGC’s drilling activity and support exploration across India’s offshore areas. The move highlights the company’s increasing focus on technically challenging offshore resources as it seeks to tap into India’s unexplored and underexplored hydrocarbon potential.

Exploration Push Under Samudra Manthan Scheme

ONGC’s deepwater exploration drive is being pursued under the Government of India’s Samudra Manthan National Offshore Exploration Scheme.The scheme aims to harness the energy resources located beneath India’s seas and support greater exploration of the country’s offshore areas.

By increasing its ultra-deepwater drilling capacity, ONGC is seeking to accelerate the identification and development of potential domestic hydrocarbon resources.

Focus on India’s Energy Security

The expansion of ultra-deepwater drilling capabilities carries strategic importance for India, which continues to work towards strengthening domestic energy supplies and reducing dependence on imports.

Deepwater exploration involves complex geological and operational challenges, requiring advanced drilling technology and specialised equipment. ONGC’s latest move is aimed at building greater capacity in this area and supporting its long-term offshore exploration programme.

About ONGC

Oil and Natural Gas Corporation (ONGC) is India’s largest government-owned oil and gas exploration and production company. Through its international arm, ONGC Videsh Limited (OVL), the company has investments in oil and gas projects across multiple countries, helping strengthen India’s energy security by acquiring and developing overseas hydrocarbon assets.

Read also: ONGC Wins US OFAC Licence to Resume Venezuela Operations, Eyes Higher Oil Production


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