US diesel exports hit record 1.9M bpd as Russian refining falters

US crude stockpiles rose 2.48 million barrels last week against forecasts for a decline, while diesel exports hit a record 1.9 million barrels a day as Ukrainian drone strikes on Russian refineries and Middle East instability tightened global fuel supply.

"Ukrainian drone attacks are having a significant impact on the market," said Gary Simmons, executive vice president and chief operating officer at Valero Energy, the second-largest US refiner.

The build compares with the 1.39 million-barrel decline analysts expected and follows a 7.17 million-barrel draw the prior week, Energy Information Administration data show. Gulf Coast refinery utilization slipped but remained near seasonal peaks. The record diesel export pace reflects roughly 5 million barrels a day of global refining capacity offline, with global light-oil inventories down about 150 million barrels since the start of the year, according to Valero.

The inventory build pressures crude benchmarks even as tight product markets lift refining margins — Marathon Petroleum posted a record 112 percent margin capture in the second quarter with $8.5 billion in adjusted EBITDA. If drone attacks persist, product cracks stay elevated while crude faces inventory headwinds.

Record diesel exports tighten product markets

The export surge is the latest sign of a market in "max diesel mode," as Marathon Petroleum's commercial chief Rick Hessling put it, with record jet demand and distillate exports draining US product tanks. US gasoline and distillate inventories sit at the bottom of their five-year ranges, and the arbitrage to ship diesel to Europe has reopened as winter-grade specifications take effect. Valero's Simmons said jet fuel provided a favorable contribution in the second quarter, though that benefit had not yet materialized in the third quarter.

Ukrainian drones shifted from targeting oil storage tanks, which recover quickly, to critical refining equipment since May, a change that extends outages. Simmons said he does not expect the attacks to slow. The last time global refining capacity was this constrained, product cracks widened for several consecutive quarters before inventories normalized.

Refining margins hold near peaks

The tightness has flowed straight to earnings. Valero's refining segment generated $4.5 billion in operating income in the second quarter, up from $1.3 billion a year earlier, on throughput of 3 million barrels a day. Marathon Petroleum returned $2.8 billion to shareholders in the quarter, including $2.5 billion in buybacks, while holding $7.8 billion in cash. Renewable diesel also rebounded, with Valero's segment posting $717 million in operating income after a $79 million loss a year earlier.

For crude, the picture is more mixed. The 2.48 million-barrel build, driven by softer Gulf Coast runs, adds to a market already absorbing heavy-sour barrels from Venezuela and Canada. Valero expects its Gulf Coast refineries to process up to 1.83 million barrels a day in the third quarter, near capacity, which could tighten crude balances again.

On the crude side, the build masks a tighter underlying balance. Global light-oil inventories are down about 150 million barrels since the start of the year, and Valero projects balances would stay below the five-year average through 2027 even if the conflicts ended today. That leaves WTI crude facing two-way pressure: inventory builds at the margin versus a structural supply deficit that keeps product cracks elevated. For refiners, the setup favors continued strong cash generation — Valero produced $5.6 billion in operating cash flow in the second quarter and returned $2.6 billion to shareholders.

This article is for informational purposes only and does not constitute investment advice.