Canadian heavy crude rallied Tuesday as geopolitical risk in the Middle East began reshuffling global barrels in real time.
Heavy Western Canadian Select strengthened in Alberta to a discount of $11.80 per barrel to the monthly average of West Texas Intermediate, according to Modern Commodities pricing. That marks the narrowest differential since November and a clear signal that heavy sour alternatives are suddenly back in favor.
The move comes as Iraq begins shutting in output of roughly 1.6 million bpd due to the Strait of Hormuz crisis. Iraqi grades such as Basrah Heavy are core supply streams for Asian refiners configured to run heavier, higher-sulfur crude. When those barrels are threatened, refiners don’t wait around, they start bidding for heavy substitutes.
Western Canadian Select is one of the few large-scale heavy grades capable of filling that gap.
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The tightening WCS differential also reflects the broader repricing already visible in global benchmarks. Brent’s premium to Dubai has blown out as traders price in disruption risk tied to the Persian Gulf. While Dubai-linked barrels remain anchored to Middle East flows, Atlantic Basin pricing is reacting to the possibility that a portion of Gulf supply could be constrained.
Canadian heavy just became more relevant.
From Alberta, barrels head west through Trans Mountain to the Pacific, putting Canadian crude within reach of Asian refiners that normally source 50% to 70% of their imports from the Gulf
If Iraqi shut-ins deepen or Hormuz traffic remains unstable, heavy crude markets are likely to tighten further. The discount compression in Alberta suggests refiners are already repositioning.
By Julianne Geiger for Oilprice.com
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