Samudra Manthan Scheme: India's Ambitious Offshore Hydrocarbon Exploration Mission

Samudra Manthan Scheme: India's Ambitious Offshore Hydrocarbon Exploration Mission

Introduction

India is the world's third-largest consumer of energy and one of the largest importers of crude oil and natural gas. More than 85% of the country's crude oil requirement and nearly half of its natural gas demand are met through imports. This high dependence exposes India to geopolitical disruptions, volatile international oil prices, and supply-chain uncertainties. To address these challenges, the Government of India has launched the Samudra Manthan Scheme, one of the largest offshore hydrocarbon exploration programmes in India's history.

Approved by the Union Cabinet in July 2026, the scheme aims to systematically explore India's offshore sedimentary basins using advanced seismic surveys, deep-water drilling and modern exploration technologies. The programme derives its name from the ancient Indian legend of Samudra Manthan, symbolising the search for valuable resources hidden beneath the ocean. The article below combines information available in the uploaded transcript with official Government press releases, Ministry of Petroleum and Natural Gas documents and other open-source government publications.

I. Background and Historical Evolution

India began hydrocarbon exploration soon after Independence with the establishment of the Oil and Natural Gas Directorate in 1955, which later became the Oil and Natural Gas Commission (ONGC) in 1956.

Major discoveries followed in:

• Assam Oil Fields
• Gujarat Basin
• Bombay High (1974)
• Krishna-Godavari Basin
• Cauvery Basin
• Mahanadi Basin

Despite these discoveries, India's domestic production has remained largely stagnant while energy demand has expanded rapidly due to industrialisation, urbanisation and economic growth.

Several policy initiatives attempted to encourage exploration, including:

• New Exploration Licensing Policy (NELP)
• Hydrocarbon Exploration and Licensing Policy (HELP)
• Open Acreage Licensing Policy (OALP)

However, a significant portion of India's offshore sedimentary basins remains underexplored, particularly in deep-water regions.

Recognising this untapped potential, the Government announced the Samudra Manthan Mission during the Independence Day address in 2025 and formally approved the scheme through the Union Cabinet in July 2026.

II. Details of the Samudra Manthan Scheme

The scheme is a comprehensive national programme for offshore exploration of crude oil and natural gas.

Implementing Ministry

• Ministry of Petroleum and Natural Gas (MoPNG)

Total Financial Outlay

Approximately ₹84,000 crore

Implementation Period

Till 2031

Primary Objective

To discover commercially viable offshore reserves of:

• Crude oil
• Natural gas
• Hydrocarbons

The programme will also strengthen India's exploration infrastructure and generate high-quality geoscientific data for future licensing rounds.

Major Components

1. Offshore Seismic Data Acquisition

Modern seismic surveys will be conducted over large offshore sedimentary basins.

These surveys generate underground geological images by transmitting controlled seismic waves into the seabed and analysing reflected signals.

The objective is to identify promising hydrocarbon-bearing structures before drilling.

2. Offshore Exploration Infrastructure

The scheme proposes creation of:

• Deep-water drilling capability
• Offshore survey vessels
• Mobile drilling platforms
• High-end exploration equipment
• Data interpretation facilities

3. Exploratory Drilling

The government plans extensive exploratory drilling in identified prospective regions.

According to official estimates discussed during Cabinet approval:

• Around 60 deep exploratory wells may be drilled.

4. Advanced Geological Mapping

Large-scale acquisition of:

• 2D seismic data
• 3D seismic data
• Basin modelling
• Geological interpretation

will significantly improve India's understanding of offshore geology.

III. Procedure of Offshore Exploration

The exploration process under Samudra Manthan follows internationally accepted petroleum exploration practices.

Stage 1: Identification of Sedimentary Basins

Scientists identify offshore sedimentary basins where organic matter could have accumulated millions of years ago.

Stage 2: Seismic Survey

Survey vessels generate seismic waves.

Reflected waves are recorded by sensitive receivers called hydrophones.

The reflected signals help scientists prepare underground geological maps.

Stage 3: Data Interpretation

Geophysicists identify:

• structural traps
• sedimentary formations
• possible hydrocarbon reservoirs

using specialised software.

Stage 4: Exploratory Drilling

Exploration wells are drilled in carefully selected locations.

Rock samples and fluid samples are collected.

Stage 5: Commercial Evaluation

Scientists estimate:

• reserve size
• pressure
• production potential
• economic viability

Only commercially viable discoveries proceed further.

Stage 6: Production Development

If economically viable:

• production platforms
• pipelines
• storage facilities
• offshore infrastructure

are established for commercial extraction.

IV. Future Prospects

The Samudra Manthan Scheme has the potential to transform India's hydrocarbon sector.

Possible long-term outcomes include:

Enhanced Energy Security

Domestic discoveries could reduce excessive dependence on imported crude oil.

Lower Import Bill

Even moderate discoveries may save billions of dollars annually in foreign exchange.

Technological Advancement

The programme encourages adoption of:

• deep-water drilling
• AI-assisted geological interpretation
• advanced seismic imaging
• digital oilfield technologies

Private Investment

Improved geological data will attract:

• domestic companies
• international exploration firms
• technology providers

Employment Generation

The programme is expected to generate employment in:

• offshore engineering
• marine services
• shipbuilding
• geosciences
• logistics
• petroleum engineering

V. Domestic Political and Economic Impact

Economic Impact

Reduced Current Account Deficit

Lower crude imports improve India's external balance.

Strengthening Energy Infrastructure

Large investments stimulate:

• ports
• offshore logistics
• fabrication yards
• pipeline networks

Industrial Growth

Availability of domestic hydrocarbons benefits:

• fertiliser industry
• petrochemicals
• refining
• transport
• manufacturing

Revenue Generation

Commercial discoveries increase:

• royalty collections
• production sharing revenues
• corporate investments

Political Impact

The scheme supports the Government's vision of:

• Energy Atmanirbharta
• Viksit Bharat
• Long-term energy resilience

Success would enhance confidence in India's capacity to secure critical natural resources.

However, environmental safeguards and transparent implementation will remain important for maintaining public trust.

VI. Geopolitical Consequences

The programme has important strategic implications.

Reduced External Dependence

India's vulnerability to disruptions in major oil-producing regions, including West Asia, may gradually decline.

Strategic Autonomy

Greater domestic production strengthens India's independent foreign policy choices during global energy crises.

Stronger Position in Global Energy Markets

Improved production increases India's bargaining power in negotiations with energy exporters.

Blue Economy Development

The scheme complements India's broader Blue Economy strategy by enhancing scientific understanding and economic utilisation of offshore resources.

Indo-Pacific Significance

Improved offshore capabilities strengthen India's maritime presence in the Indian Ocean Region.

VII. Challenges

Despite its promise, several challenges remain.

• Offshore exploration is capital intensive.
• Commercial success is uncertain.
• Deep-water drilling requires sophisticated technology.
• Environmental risks must be carefully managed.
• Offshore operations involve complex logistics.
• Long gestation periods delay financial returns.

Therefore, sustained policy support and scientific expertise will be essential.

VIII. Way Forward

The Samudra Manthan Scheme should be implemented through a balanced strategy.

• Accelerate seismic mapping of all offshore sedimentary basins.
• Expand collaboration between ONGC, OIL, private companies and international technology partners.
• Promote indigenous development of offshore exploration technologies under the Make in India initiative.
• Ensure strict environmental safeguards and disaster preparedness during offshore drilling.
• Integrate hydrocarbon exploration with India's Blue Economy and maritime security strategies.
• Strengthen petroleum research institutions and geoscientific data infrastructure.
• Encourage investment through transparent licensing and stable regulatory policies.

Conclusion

The Samudra Manthan Scheme represents one of India's most ambitious efforts to unlock the hydrocarbon potential of its vast offshore sedimentary basins. With a planned investment of around ₹84,000 crore, the programme seeks to enhance energy security, reduce dependence on imports, promote technological advancement and strengthen India's long-term strategic autonomy. While offshore exploration carries significant geological, financial and environmental risks, successful implementation could substantially improve India's energy resilience and support sustainable economic growth. In the coming decades, Samudra Manthan may become a landmark initiative in India's journey towards energy self-reliance and a stronger Blue Economy.