The U.S. Energy Information Administration reported Wednesday that the nation’s commercial crude oil inventories rose by 3 million barrels in the week ended July 3, marking the first weekly build in 11 weeks, according to the agency’s Weekly Petroleum Status Report. The increase left commercial stockpiles, which exclude the Strategic Petroleum Reserve, at 411.4 million barrels, a level the EIA said remains about 6% below the five-year average for this time of year.

Ordinarily, an unexpected increase in crude supplies would put downward pressure on prices. Instead, oil has continued climbing. Brent crude, the global benchmark, surged above $80 a barrel after rising nearly 10% over two trading sessions as renewed tensions between the United States and Iran fueled fears of disruptions to Middle East energy supplies. The disconnect reflects a market focused less on current inventory levels and more on the growing geopolitical risks facing global oil flows.

According to Ole S. Hansen, Head of Commodity Strategy at Saxo Bank, U.S. crude inventories increased primarily because exports slowed to 3.3 million barrels per day, their lowest level since November. Crude that would normally have been shipped overseas instead remained in domestic storage. At the same time, U.S. production climbed to 13.86 million barrels per day, approaching last year’s record high and adding further to domestic supplies.

While crude inventories increased, refined fuel supplies continued tightening. The government withdrew another 6.2 million barrels from the Strategic Petroleum Reserve, reducing holdings to 319.5 million barrels, down from 403 million barrels a year ago and near the lowest level in four decades. Refiners operated at a robust 95.8% of capacity, yet fuel inventories still declined. Distillate inventories, which include diesel fuel, dropped 5 million barrels to a four-year low, while gasoline inventories fell 1.9 million barrels to their lowest seasonal level since 2012.

That combination carries significant implications for the broader economy. Diesel powers freight transportation, agriculture and construction, making it one of the most important fuels for the movement of goods. Tight diesel supplies can quickly translate into higher shipping costs that ultimately reach consumers through increased grocery, retail and manufacturing prices. Meanwhile, shrinking gasoline inventories during the height of the summer driving season leave motorists vulnerable to additional price spikes if geopolitical tensions worsen.

The export picture also highlights America’s increasingly important role in global energy markets. Hansen noted that U.S. refined-product exports climbed to a record 8.7 million barrels per day, lifting total oil and refined-product exports, including crude, to approximately 12 million barrels per day. American refiners continue supplying international markets even as domestic inventories of finished fuels become increasingly constrained, a balancing act that could become more challenging should global supply disruptions intensify.

The report also illustrated how volatile current market conditions have become. The American Petroleum Institute, whose industry survey is released one day before the government’s official report, estimated a modest crude draw of approximately 399,000 barrels for the same reporting week—moving in the opposite direction from the EIA’s reported build. Such differences often reflect tanker arrival schedules and shipment timing but can become more pronounced when geopolitical events disrupt normal trade flows, as they have around the Strait of Hormuz.

Despite the inventory increase, traders continued pushing oil prices higher, viewing the risk of future supply disruptions as more significant than one week of rising U.S. stockpiles. Over the past four weeks, U.S. crude imports averaged roughly 5.4 million barrels per day, approximately 11.4% below the same period last year, suggesting the flow of foreign oil into the United States has already slowed.

The coming weeks will determine whether this inventory build proves temporary or signals a broader shift in supply. With diesel and gasoline inventories remaining tight, refiners operating near full capacity, and the Strait of Hormuz continuing to pose a significant geopolitical risk, markets appear focused on the possibility that today’s crude surplus could quickly disappear. If that happens, higher fuel costs could ripple through transportation, manufacturing and consumer prices across the economy.

JBizNews Desk | Washington

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