RE: Big barrels2 Nov 2025 20:04
I asked the question: is global oil reserves being replaced at the same rate as they decline, and here is the answer I got. Love the fact that they use Navitas as an example of some of the companies that are in fact bringing new reserves and quote them as saying “they see supply risk emerging in the 2030’ies :
“In short: no, oil reserves are not being replaced at the same rate that existing fields are declining. Here’s what’s happening in more detail:
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🛢️ 1. Decline of existing fields
• Mature oil fields naturally decline at an average rate of 4–6% per year (some even higher without investment in enhanced recovery).
• This means the world needs to add several million barrels per day of new production each year just to keep output flat.
• For example, if global production is ~100 million barrels/day, a 5% decline means 5 million barrels/day must be replaced annually.
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⛽ 2. Replacement of reserves
• The reserve replacement ratio (RRR) measures how much new reserves are added compared to what’s produced.
• Over the last decade, global RRR has consistently been below 100% — meaning the industry is discovering or sanctioning fewer new barrels than it’s extracting.
• From 2010–2020, the global average RRR was roughly 40–70% (varies by year and company).
• The last time the industry consistently replaced all produced reserves was in the early 2000s.
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🌍 3. Why replacement is lagging
• Reduced exploration spending since the 2014 oil price crash.
• Capital discipline: Companies are prioritizing shareholder returns (dividends, buybacks) over new projects.
• ESG and energy transition pressures: Many majors have scaled back long-term exploration for oil, focusing more on gas or renewables.
• Geological limits: Most easy-to-find “elephant” fields have already been discovered.
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🔮 4. Implications
• The current reserve base supports 20–25 years of production at present rates (the reserves-to-production ratio, R/P).
• But with underinvestment, future supply could tighten — especially if demand stays stronger for longer during the energy transition.
• This risk is one reason why companies like Navitas, TotalEnergies, and ExxonMobil still pursue new offshore and frontier developments — they see supply risk emerging by the 2030s.”