India's ₹84,084-crore Samudra Manthan programme seeks to expand deepwater and ultra-deepwater exploration through seismic surveys, exploratory drilling and shared infrastructure. The objective is to strengthen India's energy security by reducing its dependence on imported crude oil, which continues to expose the economy to volatile global prices and geopolitical shocks.
Yet India's offshore challenge is not simply one of drilling more wells. Deepwater exploration demands enormous upfront investment long before the commercial viability of reserves is known. Where geological information is limited, exploration becomes riskier, investment is deferred, and frontier basins remain underexplored. Samudra Manthan will succeed only if it breaks this cycle. It is therefore as much an institutional experiment in reducing uncertainty as it is a geological programme.
Breaking the Cycle of Uncertainty
Deepwater exploration is inherently uncertain. A single exploratory well can cost hundreds of crores of rupees without discovering commercially viable petroleum. Investment decisions therefore depend not only on expected oil prices and development costs, but also on confidence in a basin's geological prospects. Where that confidence is weak, exploration capital naturally shifts towards better-understood regions such as Brazil, Guyana or the Gulf of Mexico.
Public intervention can improve these economics by absorbing part of the early-stage exploration risk and expanding geological knowledge. Its justification, though, lies in changing private investment behaviour rather than merely sharing costs. If firms proceed regardless, public funding simply transfers risk from private balance sheets to the public purse.
The central test is therefore additionality. Support should accelerate exploration, expand its scale or unlock frontier basins that would otherwise remain unexplored. Establishing a credible baseline of private investment intentions is essential so that public resources generate new exploration rather than subsidise business as usual.
Information as the Real Public Asset
Samudra Manthan's most enduring public output is unlikely to be its first commercial discovery. It is the geological knowledge generated long before production begins.
Exploration is fundamentally an exercise in reducing uncertainty. Seismic surveys, exploratory drilling and basin modelling improve understanding of subsurface conditions, while even unsuccessful wells refine estimates of a basin's potential. This knowledge is a public asset that should be treated as national infrastructure rather than merely a by-product of exploration.
India has already laid part of this foundation through the National Data Repository and the Open Acreage Licensing Policy. Samudra Manthan should extend it by ensuring that publicly funded exploration continuously expands the country's geological knowledge base.
From Knowledge to Investment
Better geological knowledge alone does not attract investment. Upstream exploration capital is highly mobile and flows towards jurisdictions offering the strongest combination of resource potential, commercial returns and institutional certainty.
Even where exploration risk declines, lengthy approvals, contractual uncertainty, unstable fiscal regimes or weak dispute resolution can still discourage investment. Geological risk and investment risk are therefore distinct. The former is addressed through better information; the latter through better institutions.
Only when both decline together does public investment translate into private exploration.
Discovery Is Not Delivery
Even successful exploration is only one stage in a much longer process. Offshore projects often take years to progress from seismic surveys to discoveries, and longer still before production begins. Early assessments of Samudra Manthan should therefore focus on whether it is improving geological knowledge and attracting new exploration, rather than expecting immediate reductions in oil imports.
Ultimately, energy security depends on discoveries becoming commercially viable production.
Shared pipelines, offshore processing facilities and evacuation infrastructure are especially important for smaller discoveries whose economics depend on spreading fixed costs across multiple fields. Yet infrastructure alone is insufficient. Restrictive access, opaque capacity allocation or excessive tariffs can turn shared assets into bottlenecks rather than enablers of production.
The programme should therefore not be judged by discoveries alone. It should be assessed by how effectively discoveries progress to commercial production and strengthen domestic supply.
Building Capability Through Offshore Activity
If Samudra Manthan succeeds in sustaining exploration and production, it could also strengthen India's offshore industrial ecosystem. A predictable pipeline of projects would create demand for specialised equipment, engineering services and technical skills, allowing domestic firms to build capabilities across the offshore value chain.
Success will inevitably generate pressure to maximise domestic content. However, capabilities are more likely to emerge through competitive market development than through premature localisation mandates. If domestic suppliers are not yet globally competitive, mandatory localisation may increase costs, delay projects and discourage investment.
A more durable approach is to build capability through training, technology partnerships and predictable project pipelines, allowing domestic firms to become competitive as the market itself expands.
Environmental Governance as Investment Certainty
Investment certainty also depends on credible environmental governance. Deepwater operations involve low-probability but high-consequence environmental risks. While weak regulation may reduce compliance costs in the short term, it ultimately increases uncertainty by exposing projects to litigation, regulatory delays and higher financing costs.
Clear environmental standards, transparent liability frameworks and credible monitoring reduce these risks while protecting marine ecosystems and coastal communities. Environmental governance is therefore not simply a safeguard; it is an integral part of the investment architecture that carries discoveries through to production.
The Real Test
Samudra Manthan should not be judged by the number of wells drilled, the scale of public expenditure or immediate reductions in oil imports, as offshore exploration unfolds over long time horizons. The more meaningful question is whether public investment changes private behaviour.
Did it generate exploration that would otherwise not have occurred? Did it meaningfully expand geological knowledge? Did it crowd in fresh private investment? And did those discoveries ultimately become commercial production?
If the answer to each is yes, Samudra Manthan will demonstrate how strategic public risk-taking can reshape investment in a frontier industry. If not, it risks creating activity without lasting transformation.
Geology may determine what lies beneath the seabed, but institutions will determine whether those resources ultimately contribute to India's energy security.