Andaman Offshore Gas Discovery Strengthens India’s Energy Ambitions

Context

State-owned Oil India Limited (OIL) has announced another natural gas discovery in the Andaman offshore region, reinforcing the basin’s potential to emerge as a major hydrocarbon-producing area and support India’s long-term energy security objectives.

Andaman-Nicobar Archipelago: Strategic and Geological Significance

Geographical Setting

• The Andaman and Nicobar Islands comprise around 836 islands, divided into the Andaman group in the north and the Nicobar group in the south, located in the Bay of Bengal.
• The islands lie about 1,190 km from Chennai and nearly 1,255 km from Kolkata.

Natural Division

• The Ten Degree Channel, approximately 150 km wide, separates the Andaman Islands from the Nicobar Islands.

Southern Extremity of India

• Indira Point on Great Nicobar Island represents India’s southernmost geographical point.

Major Island Clusters

• Andaman Group – Includes North, Middle and South Andaman (collectively known as Great Andaman), along with island chains such as the Ritchie Archipelago and Sentinel Islands.
• Nicobar Group – Consists of 22 principal islands, several of which are inhabited.

Neighbouring Countries

• The island chain is situated close to Myanmar, Thailand, and Indonesia, enhancing its strategic relevance.

Geological Framework

• The islands form part of the Bengal-Arakan sedimentary basin, a region known for hydrocarbon potential.
• Their location along the Indian–Burmese tectonic boundary has generated structural and stratigraphic traps favourable for oil and gas accumulation.

Regional Hydrocarbon Linkages

• Geological continuity with productive energy provinces such as:
  • Myanmar’s offshore gas fields
  • Indonesia’s North Sumatra petroleum basin
• Recent discoveries in neighbouring offshore regions have increased international interest in the Andaman basin.

Highlights of the Latest Gas Discovery

New Exploration Success

• The latest gas find was reported from the Vijayapuram-3 exploratory well, located roughly 15 km off the eastern coast of the Andaman Islands in waters about 355 metres deep.

Follow-Up to Earlier Discovery

• The discovery succeeds the Vijayapuram-2 gas strike reported in 2025, making it the second successful gas-bearing well in the same block.

Reservoir Confirmation

• Testing in the Eocene geological formation at depths exceeding 1,900 metres confirmed the presence of natural gas.
• Continuous flaring and rapid pressure recovery indicated encouraging reservoir quality.

Boost for Offshore Exploration

• Consecutive discoveries strengthen evidence of an active petroleum system in the Andaman offshore region.
• The findings suggest the possibility of additional hydrocarbon accumulations across the basin.

Emerging Frontier Basin

• With two successful gas discoveries out of three exploratory wells, the basin is increasingly viewed as a promising frontier for future exploration activities.

Parallel Exploration Efforts

• Exploration operations are also underway in major offshore basins such as:
  • Krishna-Godavari Basin
  • Mahanadi Basin
  • Cauvery Basin
  • Mumbai Offshore Basin

Government Policy Backing

• Under the Hydrocarbon Exploration and Licensing Policy (HELP), four exploration blocks covering nearly 23,261 sq km have been awarded in the Andaman-Nicobar region.

National Initiatives Supporting Offshore Resource Exploration

Samudra Manthan Mission

Overview

• Also referred to as the National Deep Water Exploration Mission, it was announced in 2025.

Objective

• To identify and exploit offshore oil and gas reserves beneath the seabed.
• To enhance domestic hydrocarbon output and lower import dependence.

Focus Areas

• Extensive deepwater and ultra-deepwater drilling campaigns across India’s offshore sedimentary basins.

Deep Ocean Mission (DOM)

Launch

• Initiated in 2021.

Purpose

• To develop indigenous capabilities for exploration and sustainable utilisation of deep-sea resources.

Core Components

1. Development of deep-sea mining technologies and manned submersibles.
2. Ocean-climate observation and forecasting systems.
3. Exploration and conservation of deep-sea biodiversity.
4. Survey of seabed mineral resources, including polymetallic nodules.
5. Technologies for ocean-based freshwater and energy generation.
6. Establishment of advanced marine research infrastructure.

Why the Andaman Gas Discoveries Matter

Strengthening Energy Independence

• India imports a significant share of its crude oil and natural gas requirements.
• Domestic discoveries can gradually reduce reliance on external energy sources.

Strategic Maritime Advantage

• The islands are positioned close to the Strait of Malacca, one of the world’s busiest maritime trade routes.
• Hydrocarbon development could reinforce India’s strategic presence in the Indo-Pacific region.

Economic Opportunities

• Successful commercialisation may attract fresh investments in offshore exploration, infrastructure and energy services.

Potential for Future Discoveries

• The basin remains largely underexplored, increasing the likelihood of additional hydrocarbon finds.

Challenges Ahead

• Commercial production may require several years of appraisal and development.
• Detailed seismic surveys, reserve estimation and infrastructure creation will be essential before large-scale extraction begins.

Conclusion

The recent discoveries at Vijayapuram have significantly improved confidence in the hydrocarbon potential of the Andaman offshore basin. Supported by targeted exploration policies and deep-sea missions, the region could play a vital role in enhancing India’s energy security, strategic influence, and offshore resource development in the coming decades.

Source : The Indian Express