Iran war strains Strait of Hormuz and Saudi East-West pipeline; Brent above $100

The story so far

1. Summary: The Iran war, now in its seventh month, has reduced crude flows through the Strait of Hormuz to roughly 6.5 million barrels per day in September 2026 — about a third of the pre-war level of ~20 million bpd (Reuters, 2026-09-21). Drone attacks shut Saudi Arabia's East-West (Petroline) pipeline, removing the main bypass route around the strait and forcing Saudi crude back through Hormuz (Reuters via multiple outlets, ~2026-09-14–21). Producers are adapting with ship-to-ship transfer "shuttles" off Oman under US naval protection, a costly workaround Reuters calls a possible "new normal." Brent traded above $100 for roughly two weeks, spiking to $108.38 intraday on Sept 14 (front-month settlement high $105.68), while US retail diesel kept breaking records, reaching ~$6.29–6.31/gal by Sept 21 per EIA/AAA. Exposure path: (1) Crude price — Brent $100–108, WTI ~$100–104 (Sept 2026). (2) Refining/distillate — Russian refinery outages + Middle East disruption ≈ 5 mmb/d of affected refining capacity; US diesel ~$6.29–6.31/gal (record highs, still rising). (3) Shipping/freight — tanker rates at record highs; STS-transfer shuttles add cost and time. (4) Downstream — higher diesel/transport costs feed into freight rates, food logistics, and consumer prices. Sources: Reuters "Hormuz shuttles keep oil flowing, but at a high cost" (2026-09-21); Reuters "Vessels trickle through Strait of Hormuz as Mideast tension persists" (2026-09-21); Bloomberg via Rigzone "Crude Falls on Iran Diplomacy Hopes" (2026-09-21); Grafa "Brent tops $108 as Gulf supply risks deepen" (~2026-09-14).

   2026-09-23 00:37:50 UTC

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