China's Teapot Refiners Face Feedstock Squeeze as Iranian Crude Dries Up
Sanctioned supply has nearly vanished from Asian waters just as independent Chinese refiners cannot afford to switch to mainstream grades.
Chinese independent refiners are approaching run-rate cuts as Iranian crude supply to Asia collapses and mainstream grades price them out. An Energy Aspects analyst told Bloomberg this week (week of 2026-09-07) that teapots "are unlikely to be able to afford a full shift to mainstream grades" — the clearest indication yet that the supply squeeze translates into physical throughput risk.5
The scale of the Iranian supply drop is substantial. Chinese imports of Iranian crude fell from 1.4 million barrels per day throughout 2025 to 534,000 barrels per day by August, a 62% decline in one of the teapots' lowest-cost feedstocks, according to Kpler data. U.S. sanctions policy targeting Iran and Venezuela has driven the compression, removing the discounted sour grades on which independent processors built their margins.4
Cargo data shows how thin availability has become. Just 40 million barrels were held in waters east of peninsular Malaysia as of late August (2026-08-24), a key holding and transhipment zone for Asian buyers, with only around 4 million barrels remaining unsold, Rigzone reported citing tracking data. Emma Li, lead China market analyst at Vortexa, said prices for Iranian crude had risen to their highest levels since the end of the previous Trump administration.3
ICE Brent crude front-month was at $106.94 per barrel as of early Monday (2026-09-14), down 0.47% on the session. Dubai crude was at $116.42 per barrel on Monday (2026-09-14). At those levels, any grade switch away from Iranian crude pushes teapot feedstock costs sharply higher, squeezing margins that were already thin when Iranian barrels were still flowing freely.4,3
China's broader oil import position had already deteriorated sharply before the latest squeeze. Kpler estimated Chinese crude imports at 6.78 million barrels per day for the week of 2026-05-25, the lowest monthly figure in close to ten years and well down from 8.5 million barrels per day in April. China's average daily import rate throughout 2025 ran at 10.66 million barrels per day, senior Kpler analyst Muyu Xu noted, a gap of close to 4 million barrels per day that has opened over less than a year.1
Refinery runs have tracked lower. Chinese processing rates averaged 13.5 million barrels per day, down more than 1.9 million barrels per day from 2025 levels, according to Kpler. Even at that reduced throughput, further cuts look likely if feedstock access narrows.1
Beijing holds a buffer but not a solution. China's strategic petroleum reserve is estimated at roughly 1.3 billion barrels, and analysts expected withdrawals of around 1 million barrels per day in coming months, Foreign Policy reported. State refiners can draw on those reserves. Teapots generally lack priority access to reserve crude and cannot substitute it for the discounted sour barrels they are designed to process.2
The reserve draw cushions the overall system but does not fix the teapot problem. They need cheap feedstock, not just any crude. With Iranian cargo availability near multi-year lows east of Malaysia and no alternative sanctioned supply at comparable economics, processing rate cuts look increasingly difficult to avoid. Whether Beijing moves to support independent processors through concessional crude access is the next policy test. No such intervention had been announced as of Monday (2026-09-14).3,5