Who Drew Down the World’s Oil
Between February and September the world drew 537 million barrels from its oil stocks. OPEC gives the figure in the feature article of its November report. It equals about five days of world demand, and the size of the draw matters less than who made it.
Governments made most of it. In March the International Energy Agency coordinated a release of 426 million barrels from strategic reserves. By September the reserves of the rich OECD countries had fallen by 218 million barrels, and about two thirds of that oil left the tanks in April and May. The United States supplied 133 million barrels and OECD Asia, mostly Japan, 79 million. Europe supplied 6 million. Europe met most of its share by lowering the stocks it obliges companies to hold, and OPEC notes that this frees oil on paper but need not move a barrel. Outside the OECD, stocks fell by an estimated 294 million barrels, and China drew 156 million of them. Companies in the rich countries drew 24 million. In OECD Asia companies added 20 million barrels to their own tanks while their governments emptied theirs.
So the cost of the war’s lost oil fell on public stockpiles. Strategic reserves exist for a shock like this one, and the release did what it was meant to do. But the shape of the draw shows whose oil a crisis spends first. The firms that trade oil every day held on to theirs. In September OECD commercial stocks stood at 2,811 million barrels, slightly above their average of the last five years. The public’s oil went to market and the companies’ oil stayed in the tank.
The American oil was sold, not lent. OPEC’s October report notes that US federal spending fell in the third quarter partly because of sales from the Strategic Petroleum Reserve, which the national accounts record as lower government consumption. The US government sold oil from its reserve while the war held prices high, and to refill the reserve it will have to buy that oil back.
Oil on the water tells the same story from another side. OPEC counts oil at sea as unchanged since February. Floating storage fell, but tankers on longer routes away from the Gulf held more oil in transit. The world did not find spare oil at sea. It found it in the reserves of governments and in China’s tanks.
The draw also left some countries thinner than others. Countries outside the OECD, China among them, held 60 days of forward cover in February and 46 in September. The OECD fell from 63 days to 60. The countries with the least oil in reserve gave up the most, and they go into the northern winter with the Strait of Hormuz still uncertain. In OPEC’s own words, shipping through the strait still carried a geopolitical risk premium in October.
While the importers’ governments emptied their tanks, the largest exporter began to fill its own. Saudi Arabia reports two numbers to OPEC: what it produces and what it supplies to the market. In July it produced 8.14 million barrels a day and supplied 7.42 million. In August it supplied more than it produced. In October it produced 10.56 million and supplied 9.2 million. OPEC does not say where the difference went. Storage is the likeliest place, and if so, the oil the war took off the market is moving from the reserves of the countries that buy oil to the tanks of the country that sells it.
Every barrel drawn will have to be put back, and here the stocks meet OPEC’s forecast. OPEC expects world demand to grow by 2.6 million barrels a day in 2027. In its October report it named one reason: the rebound would be “further bolstered next year by the need to replenish oil inventories at large.” China’s demand falls slightly this year and grows by almost half a million barrels a day next year. The American caverns, the Japanese tanks and China’s reserves will buy oil from the same producers whose output the war cut. Part of what OPEC calls demand in 2027 will be the world buying back the oil it spent in 2026, at whatever the price is then.
The shock of 2026 will show up in the demand of 2027. The public pays for the release twice: once when the reserve is emptied in a crisis and again when it is filled.
Sources: OPEC, Monthly Oil Market Report, November 2026: Oil Market Highlights (p. iv), Feature Article (p. v), Crude Oil Price Movements (p. 2), Tables 4-1 and 4-2 (p. 32), Table 5-8 with Saudi footnotes (p. 55). OPEC, Monthly Oil Market Report, October 2026: Feature Article (p. v), World Economy (p. 14), Table 5-8 with Saudi footnotes.
The produced-versus-supplied gap is the detail that stays with us: at 10.56 million produced and 9.2 million supplied in October, Saudi Arabia was sending roughly 1.4 million barrels a day somewhere other than the market, about 40 million barrels a month at that pace. Meanwhile the countries with the thinnest cover gave up the most and face buying back at an unknown price. Do you read the Saudi build as a normal cushion rebuild, or as positioning for the 2027 replenishment demand OPEC already names?