World Oil Reserves Map
Proven crude oil reserves by country, visualized: bubble size shows barrels in the ground, from Venezuela's 303.2 billion at the top down to the smaller holders. Together these 15 countries hold roughly 1.74 trillion barrels — most of the ~1.74 trillion proven worldwide.
Proven Reserves by Country
OPEC ASB / EIA · sourced per countryBubble area (not radius) is proportional to each country's proved reserves, so the visual comparison is honest at a glance. Hover or tap a bubble for the exact figure, source and vintage. Positions are approximate country centroids for orientation, weighted toward where the reserves actually sit (e.g. Alberta for Canada, the Permian Basin for the US) — not precise field locations.
Reading the Map
What the bubbles show
- Venezuela and Saudi Arabia dominate visually — together they hold nearly a third of world proven reserves, though Venezuela's output is a small fraction of what that reserve base implies (see the Venezuela profile).
- The Gulf cluster (Saudi Arabia, Iran, Iraq, UAE, Kuwait) forms the densest concentration on the map — five countries within a few hundred miles of each other holding over a third of world reserves.
- Canada's bubble is almost entirely oil-sands bitumen, not conventional crude — see how that reserve total came to be counted.
What the map doesn't show
- Reserves rank is not production rank — the United States produces more crude than any country on this map despite a comparatively modest reserve bubble. See US reserves by state and US production.
- Only the 15 largest holders are plotted; combined they still leave out a small share of the ~1.74 trillion barrel world total held by smaller producers.
- This is proved (1P) reserves only — see proved vs. probable reserves for what that confidence tier means and why it changes yearly.
World Oil Reserves Map FAQ
Which country has the largest oil reserves?
Venezuela holds the largest proved crude reserves on this map, ahead of Saudi Arabia. Both figures are the countries' own official submissions to OPEC; Venezuela's total is dominated by extra-heavy Orinoco Belt crude that is far more costly to produce than Saudi light crude, which is why the reserve ranking looks nothing like the production ranking.
Where do the reserve figures on this map come from?
Each bubble carries its own source and vintage, shown on hover. Most rows come from the OPEC Annual Statistical Bulletin, with EIA figures for several non-OPEC countries. The underlying rows are hand-maintained and refreshed annually rather than fetched live, because no free API publishes proved reserves by country.
Why are the bubbles not on exact field locations?
Positions are approximate country centroids nudged toward where the reserves actually sit — Alberta for Canada, the Permian Basin for the United States. They are for orientation only. This map does not show individual field outlines, and it is not a geological map.
Does a bigger bubble mean a country produces more oil?
No. Reserves are barrels still in the ground; production is barrels per day coming out of it. The United States produces more crude than any country shown here while holding a comparatively small reserve bubble, and Venezuela produces a fraction of Saudi output despite the larger bubble.
How often do these reserve numbers change?
Proved reserves are revised annually and move for two reasons: new discoveries and re-appraisal, and price — barrels only count as proved if they are economic to produce at prevailing prices and technology. A country's total can therefore fall in a low-price year without a single barrel being produced.