Brent and WTI oil prices fall even as the American Petroleum Institute estimated that U.S. crude inventories jumped 7.14 million barrels in the week ending September 11. The build followed a 300,000-barrel decline in the prior week and came with Cushing stocks still slipping, a mix that kept traders parsing a market sending different signals at once.
The report matters now because it lands beside same-day price action and gives a fresh read on U.S. balances after weeks of drawdowns. At 4:13 pm ET on Wednesday, Brent was trading at $108.68 a barrel, up 2.84% on the day and more than $7 higher than a week earlier, while WTI stood at $107.38, up $3.83 and 3.70% on the day and roughly $11 above where it had been a week before.
Julianne Geiger, who has more than a decade of experience covering the global oil and gas sector, has watched this market long enough to know that one large weekly move rarely tells the whole story. The broader API data show why. Commercial crude inventories excluding the SPR have lost just over 41 million barrels over the last 22 weeks, even though US crude inventories are still up nearly 10 million barrels for the year.
That is where the friction sits. Another 400,000 barrels left the SPR for the week ending September 11 to aid commercial inventories, leaving the reserve at 285 million barrels. That is 446 million barrels shy of maximum capacity, yet still within the generally accepted operational minimum range of 250 million to 300 million barrels. The draw from the SPR helped offset commercial losses, but it did not cancel the fact that the latest weekly report showed a sharp crude build overall.
Product stocks also moved higher. Gasoline inventories rose 1.46 million barrels after a 1.9 million-barrel drop the week before, leaving them 5% below the five-year average for this time of year in the latest EIA data. Distillate inventories gained 1.61 million barrels after a 2 million-barrel increase in the prior week and were 13% below the five-year average heading into the reporting period.
At the same time, US production for the week ending Sept 4 climbed to 13.947 million bpd from 13.862 million bpd the week before, and it was 452,000 bpd higher than a year earlier. Cushing inventory still fell, down 246,000 barrels in the reporting period after a 300,000-barrel drop in the prior week, underscoring that the WTI delivery hub remained under pressure even as nationwide crude stocks swelled.
For now, the unanswered question is not whether the market moved, but what drove such a large weekly U.S. crude build while stocks at Cushing kept draining. The next inventory update will have to show whether this was a one-week distortion or the start of a more persistent shift in balances.
