Saudi East-West Pipeline Bypass (Petroline → Yanbu)
mechanismNations & Geopolitics · Defense & Military-Industrial
When Iran shut the world's key oil chokepoint, Saudi Arabia rerouted its crude across the country — and that backup pipeline promptly became the war's next target.
Who they are
The Saudi East-West Pipeline (Petroline to Yanbu), a mechanism examined in Report #175 about a 2026 Gulf war.
What they do
The engine treats it as the wartime workaround for shipping oil without passing through the blocked Strait of Hormuz.
How it works
Before the war it ran at about 2.1M barrels/day of a 5M capacity; after Iran closed Hormuz, Aramco emergency-converted a parallel gas line to carry crude, lifting the system to about 7M bpd by mid-March 2026, with Yanbu loadings hitting ~4.2M bpd; the terminus was then attacked repeatedly — an Iranian drone hit the SAMREF refinery March 19, a drone hit a pumping station April 8 hours after a ceasefire, and by July the Houthis declared a naval embargo, turning the bypass itself into a contested chokepoint at Bab al-Mandeb. Meanwhile the UAE is fast-tracking a second Fujairah line to double its own strait-free capacity by 2027.
Why it matters
It shows that even the escape route from a chokepoint becomes a target — there's no clean way around a determined blockade, only new pressure points.
The engine's record — word for word
[Report #175] The wartime rerouting architecture — and the war's pursuit of it. PRE-WAR: nameplate 5M bpd, ~2.1M utilized (~40%). CONVERSION: after Iran closed Hormuz, Aramco emergency-converted the parallel 48-inch NGL line to crude service, lifting the system to ~7M bpd (~Mar 11-12 2026; CEO Amin Nasser Mar 10: full capacity 'in the next couple of days' — S&P Global); Yanbu loadings ~4.2M bpd by Mar 18 vs 1.2-1.4M typical (BNEF). TESTED AT BOTH ENDS: Mar 19 an Iranian drone struck the SAMREF refinery at Yanbu (400,000 bpd Aramco-ExxonMobil JV; a ballistic missile at Yanbu port intercepted; minimal impact — Reuters/Arab News/Saudi MoD) — the bypass terminus targeted three weeks into the war; Apr 8 a drone hit one of 11 pumping stations hours after the ceasefire (-700,000 bpd per the Saudi oil ministry); restored to full 7M bpd Apr 12 (Bloomberg/Al Jazeera/Fortune). BY MID-JULY: ~75% of Saudi Arabia's 5.29M bpd crude+condensate exports loading at Yanbu (Reuters/Kpler month-to-date) — then the Houthis declared a naval embargo of Saudi Arabia Jul 20 and Red Sea crude loadings fell to 6.1M bpd (wk Jul 13) from a 9.5M bpd peak Jun 29 (Kpler): the bypass itself is now a contested chokepoint at Bab al-Mandeb. PARALLEL: the UAE is fast-tracking a second Fujairah line ('West-East 1', ~50% complete May 20) to double its strait-free capacity to 3.6M bpd by 2027 (CNBC). CALIBRATION: canon's 3.5-5.5M bpd bypass figure (hormuz_detailed) = the PRE-WAR envelope; wartime combined strait-free nameplate ~8.5-8.8M bpd. Whether the Red Sea shift is a temporary wartime measure or the permanent supply map is discriminator (2) on divergence #221 — held; name no holder. [Live pass Jul 27 2026] Yanbu (~92% of June seaborne exports per Kpler) came under direct Houthi missile attack Jul 25 (intercepted); the bypass terminus is now both the dominant export route and a kinetic target — Div #221 discriminator (2) actively contested; loadings not reported halted.
[Live pass Aug 11 2026] Houthis extended their blockade to the northern Red Sea Aug 5, striking the Saudi tanker Wafa off Yanbu — the 8th Saudi tanker since Jul 22 and the engine's tracked bypass terminus; an Aug 11 Bab al-Mandeb attack killed 4.
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