Asian refinery/importer exposure
About 84% of Hormuz crude went to Asian markets pre-war (China, India, Japan, South Korea the top importers), and the current choke is already measured in arrivals: Asia's August crude imports ran 23.12 mb/d, ~14% below the 26.91 mb/d average of the three months to end-February (Kpler via Reuters). A near-total stop would force Asia's refiners onto longer-haul replacement barrels.
Evidence: EIA via SpeedCommerce — ~84% of Hormuz crude to Asia; Kpler via Reuters — Asia Aug imports 23.12 vs 26.91 mb/d pre-war average
Caveat: UNVERIFIED as a structured scramble outcome — the import shortfall is measured, but there is no measured precedent for a full-loss scramble
LNG to Northeast Asia
Qatari and UAE LNG through Hormuz totaled ~118.9 bcm in 2025, close to one-fifth of global LNG exports, with no alternative export routes (IEA via CEPR). Qatar exported 9.3 Bcf/d through the strait in 2024 and 83% of Hormuz LNG went to Asian markets (EIA). The gas-side shock is already measured: one week after the Feb 28 outbreak, Asian JKM prices were ~80% above pre-war and European TTF ~70% higher (CEPR); Iran's strikes separately knocked out ~17% of Qatar's liquefaction capacity.
Evidence: IEA via CEPR — 112 bcm Qatar + 6.9 bcm UAE through Hormuz in 2025, ~1/5 of global LNG exports, no alternative routes; EIA — 9.3 Bcf/d Qatar 2024, 83% of Hormuz LNG to Asia; CEPR — JKM +80%, TTF +70% one week after outbreak
Caveat: UNVERIFIED as a winter price outcome — the one-week response is measured, but a full-winter repricing is not
War-risk insurance withdrawal empties the strait commercially
The insurance channel already fired once and is still the binding constraint: in the June 2019 Gulf attacks, war-risk premiums quadrupled to ~$200,000 per VLCC voyage, and in the Red Sea they rose from ~0.05% to 0.5–1.0% of hull value per voyage (UNCTAD). Today's measured equivalent is single-digit transits — 7 vessels on Sept 9 (Reuters) — and Kpler reported ballast entries into the Gulf down to ~2 per day. Any further deterrence or insurance withdrawal drives the strait to near-zero before a single additional shot is fired.
Evidence: Chambers — 2019 Gulf war-risk premiums ~$200k/VLCC voyage; UNCTAD — Red Sea 0.05% → 0.5–1.0% of hull value; Reuters Sept 10, 2026 — 7 Hormuz transits, 10-day avg 14; Kpler Aug 2026 — ballast entries ~2/day
Bypass pipelines under attack
The bypass valves are small and are now being attacked themselves. Saudi Arabia's 1,200 km East-West pipeline — which had been moving 4–5 mb/d (4–5% of global supply) around the strait — was shut as a precaution on Sept 11 after drones from Iraq damaged three pumping stations in the Riyadh and Medina regions; three sources put repairs at five to six weeks. EIA's longstanding assessment holds: alternatives 'could move only a portion' of the oil volumes out of the strait.
Evidence: Reuters Sept 12/17, 2026 — East-West shut, 3 pumping stations hit, 4–5 mb/d bypass lost, repairs 5–6 weeks; WSJ — line capacity 7 mb/d design; EIA chokepoints — alternatives move only a portion
Caveat: UNVERIFIED — repair timeline is sourced estimates, not confirmed; whether the line resumes partial pumping during repairs is unknown
SPR and inventory bridge capping the tail
The historical template for capping an oil-supply shock is the September 2019 Abqaiq attack: 5.7 mb/d knocked out — the worst sudden disruption ever recorded — yet Brent's ~20% intraday spike faded within days as Saudi inventories and IEA coordination absorbed it. IEA strategic stocks and demand destruction are the measured ceiling-setters for physical shocks.
Evidence: CRS/IEA — Abqaiq 5.7 mb/d knocked out; Reuters — Brent +14.6% settled, spike faded in days
Caveat: UNVERIFIED for this crisis — no coordinated IEA release had been measured as of mid-September 2026, and Brent had climbed back above $100