Big Oil Returns to Exploration as Reserves Dwindle

A Strategic Pivot Back to the Source

Following a prolonged period of reduced investment in upstream operations and a brief dalliance with renewable energy ventures, the titans of the global oil and gas industry are now accelerating their search for new reserves. This strategic recalibration aims to bolster their exploration portfolios, a move signaled by industry leaders for almost a year. The underlying rationale is a clear conviction that demand for oil and natural gas will not only persist but continue its upward trajectory for the foreseeable future.

Discussions during the 2025 earnings season and prominent at the recent CERAWeek conference in Houston underscored this renewed commitment. Executives from the largest energy conglomerates have emphatically stated that exploration is now a paramount objective, alongside the established goals of enhancing shareholder value and increasing investor returns.

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Hunting for the Next 'Guyana'

Each major player has identified specific geographical areas for their intensified exploration drives. While the chosen territories vary, the overarching ambition remains consistent: to unlock substantial new resources. The ultimate prize is discovering a resource-rich province, akin to the significant finds in Guyana, capable of supplying vast quantities for decades and effectively replacing current production levels.

“Five years ago, the concept of reserve replacement wasn’t on the radar. It was overlooked. But we must now seriously consider how we will substitute our current output in the coming years,” noted Francisco Gea, Repsol’s executive managing director of exploration and production, during CERAWeek. This sentiment reflects a broader industry realization: the energy transition, while progressing, is not immediately diminishing the fundamental need for oil and gas. The optimistic projections of the early 2020s, which anticipated demand peaks as soon as the following year, are being reevaluated.

Evidence of this shift is seen in the policy reversals by European giants. Both BP and Shell have retreated from their earlier commitments to significantly cut oil and gas output by the end of this decade. The past year has marked a decisive return to prioritizing production growth, naturally accompanied by a surge in exploration efforts across promising basins and untapped frontiers.

Geographic Focus and Discovery Ambitions

Shell, under CEO Wael Sawan, has visibly expanded its exploration footprint. The company has acquired new acreage in Angola, South Africa, and the U.S. Gulf of Mexico. Sawan expressed satisfaction with smaller, commercially viable discoveries in familiar territories but acknowledged a desire for larger, more transformative finds that could establish new resource hubs.

Shell will pursue resources through a combination of exploration, mergers and acquisitions, and new business development. The deployment of capital will be guided by factors such as past performance, risk-adjusted returns, and the potential for value creation. Crucially, the speed at which any discovered resources can be brought online will heavily influence expenditure decisions for Shell and other industry players.

Similarly, TotalEnergies has broadened its exploration reach, securing new licenses in Algeria, the U.S. Nigeria, Malaysia, Indonesia, Guyana, and Liberia. Namibia stands out as a critical frontier for the French energy firm, boasting discoveries like Venus and Mopane. Deputy CFO Arnaud Le Foll described these as “large, competitive, low-emissions deepwater projects” with substantial long-term potential, forming the bedrock of what could be a new major resource province for the company.

“Exploration is a constant for us. I recognize this is a different tune than we've heard recently,” commented CEO Patrick Pouyanne, highlighting the company's sustained exploration investment of approximately $1 billion annually over the last decade. This year's agenda includes promising exploration targets in Nigeria, Congo, Namibia, and Malaysia, alongside more ambitious frontier ventures in Papua New Guinea and Indonesia.

Among Europe's majors, BP has also rejoined the core business of boosting oil and gas production. Last year, the company announced a significant discovery in Brazil's offshore Santos Basin, its largest find in 25 years. Meanwhile, U.S. giants ExxonMobil and Chevron are heavily invested in the vast offshore resources of Guyana's Stabroek block, with ExxonMobil as the operator and Chevron recently bolstering its stake through its acquisition of Hess Corporation.

The Imperative of Replenishing Reserves

The renewal of upstream portfolios is a central strategic theme for these energy giants. Analysts at Wood Mackenzie highlighted in February that achieving higher resource replacement ratios is essential to prevent production declines in the coming decade. The urgency of this task, however, varies significantly among companies.

“The challenge is considerable. To bridge the gap, majors will need to leverage a mix of discovered resource opportunities, M&A, and exploration,” stated Wood Mackenzie’s Simon Flowers and Gavin Thompson. They further observed that exploration is poised to play a vital role in this resource replenishment strategy, as evidenced by the widespread acquisition of acreage across the sector.

Market Ripple Effects

This renewed focus on exploration by major oil and gas companies carries significant implications for various market segments. The accelerated search for new reserves directly impacts the demand for exploration and production (E&P) services, potentially benefiting companies involved in seismic surveying, drilling, and offshore support. Geopolitical considerations also come into play, as exploration efforts often target regions with complex political landscapes, influencing regional stability and international relations.

The increased upstream investment could also exert upward pressure on crude oil prices in the medium term, assuming discoveries are substantial and production ramp-ups are successful. This, in turn, could fuel inflationary pressures, impacting global economic growth and prompting central banks to maintain hawkish stances on monetary policy. Consequently, currency markets may see increased volatility, particularly for commodity-linked currencies such as the Canadian Dollar (CAD) and the Norwegian Krone (NOK). Furthermore, the ongoing commitment to fossil fuels, despite the energy transition narrative, might affect investor sentiment towards renewable energy stocks and companies heavily invested in green technologies, creating a dynamic tension between traditional energy pursuits and sustainable investment goals.