Middle East Crude Benchmark Faces Crisis as Hormuz Export Shutdown Cuts Supply 40%

Dubai’s Middle East crude benchmark is facing acute strain after oil exports through the Strait of Hormuz stopped following the start of the Iran war on February 28, 2026, according to the information provided. The Dubai benchmark is used to price nearly one-fifth of global crude supply, making disruptions to its underlying deliverability a major issue for physical trading and for refiners that rely on it for procurement.

The benchmark is normally anchored by crude streams from the United Arab Emirates, Oman, and Qatar that are loaded within the Strait of Hormuz. The source material says the threat of Iranian attacks has affected those flows, and the export halt has forced market participants to reassess whether the benchmark can still function as intended under current conditions.

S&P Global Energy Platts, the pricing agency referenced, made a rapid adjustment on March 2 by removing three crude grades from the Dubai benchmark. That decision cut the volume of crude that can be delivered into the benchmark by about 40%, the source says. After the change, only Abu Dhabi Murban loading from Fujairah port and Oman crude remained as benchmark components.

Traders and refiners have responded by questioning the benchmark’s effectiveness, with some participants reportedly stopping trades of cargoes priced against Dubai. The shift matters because Dubai-linked pricing is widely used in Asia for Middle East supply, and changes to the benchmark can quickly alter contract economics, hedging practices, and the reliability of price signals used across the region.

The supply shock has also pushed Middle East crude prices to nearly $170 a barrel, according to the source material. That level is above Brent’s 2008 peak of $147, underscoring the scale of the move described. The price surge has raised costs for Asian buyers, and the source says some refiners have moved to alternative pricing approaches, including buying U.S. crude priced as a differential to international Brent crude futures.

The speed of the benchmark changes has been a further point of stress. The source material notes that adjustments of this kind typically involve months of consultation, but the March 2 action came quickly and surprised traders. The same account says the resulting financial burden for consumers in March is estimated in the tens of billions of dollars.

Key uncertainties remain centered on how long the Strait of Hormuz export halt persists and whether the remaining deliverable grades can sustain confidence in Dubai-linked pricing. With a benchmark that prices a large share of global crude now under pressure, the episode has immediate consequences for Asian refining margins and trading activity, and it also carries broader global relevance through its impact on oil price formation and cross-benchmark relationships.