Roughly 13 million bpd of crude now moves through the Strait of Hormuz — only about 5 million bpd below the waterway's full capacity — at the precise moment Iranian barrels are disappearing from the global market, according to tracking data cited in the source report.

The squeeze lands hardest in China. Chinese crude demand is recovering just as the country loses the supplier that carried its independent refiners — the teapots — through the downturn. Those refiners now must compete for increasingly expensive alternative barrels, raising feedstock costs for the Shandong refining complex that has leaned heavily on discounted Iranian crude.

The consequences extend well beyond China's coast. Every barrel a Chinese buyer replaces comes out of the same supply pool available to other importers, tightening availability for refiners across Asia and beyond and lending support to crude prices. Price direction here remains analysis to attribute rather than established fact: the source frames the market effect as a tightening of supplies for other buyers, not as a forecast of specific price levels.

The Hormuz number carries its own weight. Flows of 13 million bpd against roughly 18 million bpd of capacity leave the strait running far harder than many expected given the disruption risk, and the source argues Tehran now faces a growing incentive to interfere with the chokepoint. Any interruption would affect the entire volume transiting the waterway, not just Iranian exports.

For Chinese independents, the loss is structural rather than cyclical. Discounted Iranian crude sustained the teapots through the demand crisis; without it, they bid against state-run and international refiners for mainstream grades, which erodes the feedstock cost advantage that defined their business model. The source does not quantify how many Iranian barrels have left the market or over what timeframe.

The watch items are threefold: how quickly replacement buying by Chinese refiners tightens physical differentials for non-Iranian grades; whether Tehran acts on the incentive to disrupt Hormuz traffic that the source identifies; and whether Chinese demand recovery continues at a pace that absorbs barrels faster than alternative suppliers can replace the lost Iranian volumes.