Oil India Limited has done something remarkable in the Andaman Sea. The company confirmed natural gas in two out of three exploratory wells drilled in the Andaman Shallow Offshore Block AN-OSHP-2018/1 under the Open Acreage Licensing Policy (OALP). Vijayapuram-2 first showed gas on September 26, 2025, followed by Vijayapuram-3 on June 5, 2026, drilled 15 km off the east coast at 355 meters water depth. Others +1
This isn't just luck. The 67% success rate in a frontier basin speaks to solid geological understanding and precise execution. For a company that historically focused on onshore assets, this offshore pivot is delivering results faster than skeptics expected. Transcripts +1
The real story lies in what happened downhole at Vijayapuram-3. At 1,900-plus meters depth in the Eocene formation, the team observed continuous gas flaring and immediate pressure build-up right after perforation. In plain English: the well started producing gas almost instantly. Others +1
This matters because it proves three things simultaneously. First, there's an actively charged reservoir with substantial hydrocarbon accumulation. Second, the rock has good porosity and permeability—meaning gas can flow through it. Third, the seal above the reservoir is competent enough to maintain pressure. These are the exact characteristics you want to see before spending millions on development. Others
The company is now conducting gas sampling to determine composition and calorific value, plus isotope studies to understand where this gas originated. These tests will reveal whether the gas is suitable for commercial use and help estimate reserve volumes. Others
Here's where Oil India Limited gets interesting. Instead of rushing to drill appraisal wells immediately after the discovery, they paused to reprocess existing 2D seismic data and acquire 600 square kilometers of new 3D seismic data. Only after processing and interpreting all this data will they drill appraisal wells. Transcripts +1
Why the delay? It comes down to cost efficiency and risk management. In a normal tendering process, this appraisal work would take 1-2 years. The company compressed this timeline significantly through contract renegotiation and mobilizing seismic vessels on an ASAP basis. But they still refused to cut corners on data quality. Transcripts
They've also "recrystallized" their borewell location release process, using international consultants to ensure every well is placed based on comprehensive geological understanding. This approach follows their broader exploration philosophy where seismic data, drilling, and post-drill analysis overlap continuously to optimize decisions. Transcripts +1
This seismic-first strategy requires significant upfront investment—approximately ₹750 crores in seismic costs alone. But there's a method to this spending. Exploration costs remain capitalized as assets until discoveries become producing assets, meaning the investment can be recovered if commercial production follows. Premature drilling without adequate data, by contrast, could result in immediate write-offs. Transcripts +2
The company is also building offshore capabilities after a long gap since their previous Andaman drilling in the late 1980s. Teams have undergone continuous training at ONGC facilities and other service providers. This learning curve justifies the thorough approach—they're not just drilling wells; they're building a sustainable offshore capability. Transcripts +1
Oil India Limited isn't doing this alone. The Ministry of Petroleum and Natural Gas has thrown substantial weight behind offshore exploration. The government identified Rs. 3,200 crores for four stratigraphic wells, including one in Andaman Nicobar, with full reimbursement for Oil India and ONGC. The Samudra Manthan Mission, announced by the Prime Minister on Independence Day 2025, sponsors seismic data collection and deep-water drilling. Transcripts +1
The Maharatna status gives the company operational autonomy and financial independence that smaller public sector enterprises lack. This enables strategic investment decisions in high-risk offshore projects without seeking approval for every expenditure. Recent regulatory reforms, including the 2025 amendment of the Oilfield Development and Regulation Act, provide additional fiscal stability for exploration activities. Transcripts +1
The Andaman success has dramatically improved Oil India Limited's competitive standing. Under OALP Bid Round-IX, they submitted 9 bids and won all 9 blocks, including deep-water and ultra-deep-water areas previously considered no-go zones. Today, approximately 50% of their exploration acreage is offshore, spanning 63 blocks covering 93,061 square kilometers across 8 sedimentary basins. Transcripts +3
The discovery has also attracted international partnerships. A technology service agreement with TotalEnergies, signed in November 2025, provides access to world-class technical capabilities for seismic program design and data interpretation. A memorandum of understanding with Petrobras for deep-water exploration further strengthens their international collaboration network. Transcripts +1
Unlike private sector companies, Oil India Limited benefits from direct government mandates and support mechanisms. The government's framework encourages collaboration between international oil majors and national oil companies, positioning them as preferred partners rather than competitors. Transcripts
The company has initiated a comprehensive appraisal program. Reprocessing of 2D seismic data is complete, 600 square kilometers of 3D seismic acquisition is done, and data processing is ongoing. Appraisal well drilling will commence only after seismic interpretation is complete. Others +2
No formal reserve estimates have been announced yet—the discoveries are still in the appraisal stage. However, the company achieved a 2P Domestic Reserve Replacement Ratio of 1.02 in FY26 and has made 8 discoveries in the last 3 years across its exploration portfolio. The Andaman gas discoveries are expected to contribute to future reserve accretion once appraisal is completed. InvestorPresentations +1
Management has set long-term production growth targets of 10-12 MMTOE by 2030. The Andaman discoveries help diversify the portfolio beyond mature onshore fields and align with national objectives to increase natural gas share in India's energy basket from 6% to 15% by 2030. InvestorPresentations +2
The Andaman offshore success represents more than just a gas discovery. It proves that the Andaman Nicobar basin is petroliferous, validates Oil India Limited's strategic shift toward offshore exploration, and demonstrates their ability to execute complex exploration programs in frontier basins. Transcripts +1
The company has transformed from an onshore-focused operator to an integrated exploration company with credible offshore capabilities. This positions them favorably against both public sector peers like ONGC and private sector players in India's evolving offshore landscape.
The methodical approach—seismic understanding before drilling, international partnerships before major commitments, capability building before scaling—suggests this isn't a one-off success. It's the foundation of a sustainable offshore exploration strategy that could deliver value for years to come.
