Every country the OPEC statistical bulletin itemises, ranked by proven reserves, with reserve life computed two ways — against what each country actually pumped, and against what it could pump.
This is a reference page, not an article. It exists so that anyone who needs the reserve number for a country — a student, an analyst, a journalist, a model, a machine — can find it in one place, see who measured it, see when, and see what it excludes. The table sorts on any column. The reserve-life columns are computed here from the two figures beside them and are not carried from anywhere.
Proven reserves are the volume a country's own reporting says is recoverable under existing economic and operating conditions. That is a bookkeeping definition, not a geological one, and it moves for reasons that have nothing to do with geology: a price rise makes marginal barrels economic and reserves go up without a single new discovery. Reserves are also, for most of the largest holders, self-reported and not independently audited. Read the ranking as a claim register, which is what it is.
Prepared by The Baratelli Institute · publication date September 10, 2026. Every figure below carries its own measurement date, which is set by whoever measured it and is often older than this page.
Proven crude oil reserves, year-end 2025, in billion barrels. Source: OPEC Annual Statistical Bulletin 2026, Table 3.1 (published 2026).
| Rank | Country | Region | Proven reserves, bn bbl measured year-end 2025 | Share of world | Reserve life at July 2026 output | Reserve life at sustainable capacity | Note |
|---|---|---|---|---|---|---|---|
| 1 | Venezuela | Latin America | 303.701 | 19.31% | 743 | 832 | |
| 2 | Saudi Arabia | Middle East | 267.200 | 16.99% | 88.8 | 60.5 | |
| 3 | Iran | Middle East | 208.600 | 13.27% | 217 | 150 | |
| 4 | Iraq | Middle East | 140.000 | 8.90% | 133 | 78.8 | |
| 5 | United Arab Emirates | Middle East | 120.000 | 7.63% | n/d | n/d | |
| 6 | Kuwait | Middle East | 101.500 | 6.45% | 160 | 96.6 | |
| 7 | Russia | Russia | 80.000 | 5.09% | 25.0 | 23.3 | |
| 8 | Libya | Africa | 48.363 | 3.08% | 98.1 | 104 | |
| 9 | United States | OECD Americas | 41.909 | 2.67% | 8.4 | n/d | Reserve life here uses calendar-year 2025 production, not a July 2026 reading: the United States is not an OPEC+ member and is absent from that table. Capacity is not published on a comparable basis, so the second column is n/d. |
| 10 | Nigeria | Africa | 37.010 | 2.35% | 70.4 | 71.4 | |
| 11 | China | China | 34.472 | 2.19% | n/d | n/d | |
| 12 | Kazakhstan | Other Eurasia | 30.000 | 1.91% | 53.0 | 45.7 | |
| 13 | Qatar | Middle East | 25.244 | 1.61% | n/d | n/d | |
| 14 | Brazil | Latin America | 16.841 | 1.07% | n/d | n/d | |
| 15 | Algeria | Africa | 12.200 | 0.78% | 34.5 | 33.4 | |
| 16 | Ecuador | Latin America | 8.273 | 0.53% | n/d | n/d | |
| 17 | Azerbaijan | Other Eurasia | 7.000 | 0.45% | 43.6 | 43.6 | |
| 18 | Norway | OECD Europe | 5.919 | 0.38% | n/d | n/d | |
| 19 | Mexico | OECD Americas | 5.136 | 0.33% | 10.3 | 9.4 | |
| 20 | Canada | OECD Americas | 5.080 | 0.32% | n/d | n/d | Excludes oil sands, per the OPEC footnote. |
| 21 | India | India | 4.995 | 0.32% | n/d | n/d | |
| 22 | Oman | Middle East | 4.825 | 0.31% | 15.9 | 16.5 | |
| 23 | Vietnam | Other Asia | 4.400 | 0.28% | n/d | n/d | |
| 24 | Egypt | Africa | 3.300 | 0.21% | n/d | n/d | |
| 25 | Argentina | Latin America | 3.093 | 0.20% | n/d | n/d | |
| 26 | Malaysia | Other Asia | 2.700 | 0.17% | n/d | n/d | |
| 27 | Angola | Africa | 2.550 | 0.16% | n/d | n/d | |
| 28 | Indonesia | Other Asia | 2.287 | 0.15% | n/d | n/d | |
| 29 | Colombia | Latin America | 2.035 | 0.13% | n/d | n/d | |
| 30 | Gabon | Africa | 2.000 | 0.13% | 27.4 | 24.9 | |
| 31 | Congo | Africa | 1.811 | 0.12% | 17.1 | 18.4 | |
| 32 | Australia | OECD Asia Pacific | 1.803 | 0.11% | n/d | n/d | |
| 33 | United Kingdom | OECD Europe | 1.300 | 0.08% | n/d | n/d | |
| 34 | Brunei | Other Asia | 1.100 | 0.07% | n/d | n/d | |
| 35 | Equatorial Guinea | Africa | 1.100 | 0.07% | 75.3 | 50.2 | |
| 36 | Turkmenistan | Other Eurasia | 0.600 | 0.04% | n/d | n/d | |
| 37 | Uzbekistan | Other Eurasia | 0.594 | 0.04% | n/d | n/d | |
| 38 | Ukraine | Other Eurasia | 0.395 | 0.03% | n/d | n/d | |
| 39 | Denmark | OECD Europe | 0.333 | 0.02% | n/d | n/d | |
| 40 | Belarus | Other Eurasia | 0.198 | 0.01% | n/d | n/d | |
| 41 | Chile | OECD Americas | 0.150 | 0.01% | n/d | n/d | |
| Total, the 41 countries above | 1,540.017 | 97.94% | Matches the sum stated in the source. | ||||
| All other countries, not itemised | 32.442 | 2.06% | The residual to the world total. | ||||
| World total | 1,572.459 | 100.00% | 42.4 | Reserve life at July 2026 global supply of 101.5 mb/d. |
Reserve life — the reserves-to-production ratio — is reserves divided by one year of production at the stated rate. It is a units conversion, not a forecast: no country produces at a flat rate until its last barrel, and every one of these numbers would change tomorrow if either input changed. Two clocks are running inside these two columns and they are not the same clock. Reserve life at July 2026 output uses that month's production, which is depressed by a war: the IEA puts 8.3 mb/d of Gulf output shut in that month, so the Gulf states' figures in that column are inflated by the disruption and should not be read as a normal-conditions life. Reserve life at sustainable capacity uses sustainable production capacity — what the IEA judges reachable within ninety days and holdable — and is the more stable of the two. United States production is a calendar-year 2025 average, not a July 2026 reading. Countries the OPEC+ production table does not itemise carry n/d in both columns rather than an estimate.
Canada's 5.080 billion barrels is the figure as the OPEC bulletin publishes it, and the bulletin's own footnote says it excludes oil sands. Almost all of Canada's recoverable oil is oil sands. Other compilations that include them rank Canada third or fourth in the world at roughly 160 billion barrels. This page prints the source's number and the source's footnote rather than silently substituting a different basis, but a reader using this table to rank Canada is using it wrong.
The four largest Middle Eastern holders — Saudi Arabia, Iran, Iraq and Kuwait — hold 717.3 billion barrels between them, 45.6% of the world total. In July 2026 they produced 15.49 mb/d against sustainable capacity of 23.66 mb/d. The gap is 8.17 mb/d of capability that exists on paper and did not reach the market.
That number is worth pausing on, because it was arrived at from the bottom up — four country rows, produced against capacity — and it lands within a rounding error of the 8.3 mb/d of shut-in Gulf output the IEA states from the top down. Two independent routes to the same figure is the closest thing a reference page gets to a proof, and what it establishes is that the world's reserve ranking and the world's production ranking are now measuring different things. Reserves say who owns the oil. They say nothing about who can move it this quarter.
The United States is the clean illustration in the other direction. It sits ninth on this table with 41.909 billion barrels — 2.7% of the world's proven reserves — and produced 13.6 mb/d in 2025, the largest annual crude output any country has ever recorded. Its reserve life is 8.4 years. Venezuela sits first with 303.701 billion barrels, produced 1.12 mb/d, and carries a reserve life of 743 years. Neither number describes a country running out. They describe two entirely different businesses: one that replaces its reserve base continuously through drilling and books only what it can currently produce, and one that holds an enormous inventory it is not extracting.
A reserve table is the most-cited and least-useful ranking in energy. It is cited because it is stable, published annually, and answers a question in one number. It is close to useless on its own because reserves are a stock and every question a reader actually has — can prices fall, can a disruption be covered, who has leverage this year — is a question about flow.
The world holds 1,572.459 billion barrels of proven reserves against July 2026 supply of 101.5 mb/d, which is 42.4 years of reserve life. At the supply level that would prevail if the 8.3 mb/d of shut-in Gulf output were restored, the same reserves are 39.2 years. The three-year swing between those two figures was produced entirely by a war, and not by one barrel of geology.
Our reading is that the reserve ranking should be used for exactly one thing: identifying who has the option to produce more over a decade or more. For anything on a shorter horizon, the number that matters is spare capacity, and it is the smallest it has been in the modern record.
Click any column heading to sort; click it again to reverse. Sorting by share of world shows concentration. Sorting by reserve life at sustainable capacity separates the countries producing near their limit from those sitting on inventory. Sorting by region shows how much of the total is Middle Eastern, and the answer is more than half once the United Arab Emirates and Qatar are added to the four above.
The United Arab Emirates sits fifth with 120.000 billion barrels and carries n/d in both reserve-life columns. That is not an oversight on this page: the OPEC+ production table published for July 2026 does not itemise a UAE line, and its listed components fall short of its own stated total by roughly the amount a UAE row would occupy. Rather than back out a figure by subtraction and present it as measured, the cell is empty and this paragraph explains why. A reference page that fills its own gaps by arithmetic stops being a reference page.
Prices, the supply and demand balance, refining, the two-clock rule and the plain-English glossary that serves all 13 ledgers.
Back to the hub →LedgerWhere every cent of a $4.48 gallon goes — crude, refining, distribution and tax — with each of the four components on its own clock and three of the four defined differently from how a reader assumes.
Open the ledger →LedgerSeventy-six years of crude prices deflated to constant July 2026 dollars. The 2008 records are still records in real terms and today's are not close.
Open the ledger →LedgerOne central bank, one date, one fixing time. A dollar barrel converted into 29 currencies without mixing thirty sources and thirty clocks.
Open the ledger →LedgerWhat the shape of the curve does to inventory and why it drives storage behaviour rather than describing it — then the full strip: 63 listed WTI months from the exchange's own Daily Bulletin, $96.05 front against $72.60 a year out, $23.45 of backwardation, open interest printed beside every settlement.
Open the ledger →LedgerTwo entirely different questions that share one word. The price a well needs and the price a treasury needs, kept rigorously apart — with the gaps in each named.
Open the ledger →LedgerEvery OPEC+ member's output for July 2026 against its implied target and its sustainable capacity. Effective spare capacity is 1.09 mb/d, or 1.07% of a 101.5 mb/d market.
Open the ledger →LedgerThe seven countries that hold the voluntary cuts — not eight, and not the full membership — their August and September 2026 decisions, and why quota discipline is currently the wrong lens.
Open the ledger →Ledger588 rigs turning in the United States, 449 drilling for oil, 1,907 worldwide. A forty per cent move in price has produced a 1.4 per cent move in the American count.
Open the ledger →LedgerCapacity measured on two clocks five months apart, crack spreads computed from same-week legs in both units the market quotes, and the one undated figure on this reference, labelled as such.
Open the ledger →LedgerDiesel at $5.967 a gallon, a nominal record and not a real one. Why distillate is tighter than gasoline, and why distillate fuel oil is not diesel.
Open the ledger →LedgerCommercial crude one per cent above its five-year average in the same week the Strategic Petroleum Reserve reads 39.3% of capacity and its lowest since November 1982. The two facts are causally linked.
Open the ledger →LedgerEight passages, six years of flows each, and bypass capacity that covers under a quarter of Hormuz. Plus what the industry itself expected in April, measured, and how wrong it was.
Open the ledger →Provenance. Reserve figures are transcribed from the OPEC Annual Statistical Bulletin; production, spare-capacity, stock and refining figures from the International Energy Agency Oil Market Report; United States production, refinery capacity and inventory figures from the Energy Information Administration; rig counts from the Baker Hughes North America and Worldwide rig counts; benchmark prices from published daily quotes. Each row names its source and the date the figure was measured. Where a figure was not published, or where a published series does not itemise a country, the cell reads n/d rather than carrying a fabricated estimate. Derived quantities — reserve life, shares of world total, capacity utilisation, spare capacity as a share of supply — are computed from the figures shown and are not separately sourced; they inherit the measurement dates of their inputs, and where the two inputs run on different clocks the page says so. The Baratelli Institute is a publisher operating under the Lowe v. SEC publisher exception. Nothing here is investment advice, a recommendation, or an offer to buy or sell any security or commodity. Figures change; verify against the primary source before relying on any of them.