
Aramco Begins Testing the Hormuz Bypass Pipeline
Saudi Aramco began running tests on September 22 to resume flow on its East-West Pipeline, the kingdom's main overland bypass around the blockaded Strait of Hormuz, after a nine-day shutdown, Bloomberg reported. Full operation is not yet confirmed, and Tehran has set its own terms for reopening the strait itself; Brent's rebound above $101 on September 23 reflects a diplomatic opening, not a resolved war.
Saudi Aramco began testing its East-West Pipeline on September 22, 2026, to resume the up-to-4-million-b/d bypass around blockaded Hormuz after a nine-day shutdown, Bloomberg reported; full restoration is six to eight weeks out. Iran has disclosed three of seven conditions — ending the naval blockade, returning frozen assets, halting the conflict — for reopening the strait itself.
The Gulf Barrel Desk · 3 min read- Saudi Aramco began running tests on September 22, 2026, to resume its East-West Pipeline, nine days after a drone strike shut it down, working to restore an overland route of up to 4 million b/d from the Eastern Province to the Red Sea port of Yanbu, bypassing the Strait of Hormuz (Bloomberg).
- Bloomberg's own reporting frames this as a test phase, not a completed reopening: the line can ramp to roughly 40% of capacity within days, but a full return to normal operation is six to eight weeks out (Bloomberg).
- Brent rebounded above $101 a barrel on September 23, snapping a five-session slide that had pulled it to a two-week low near $98 the day before, as markets weighed the pipeline testing news against a first direct U.S.-Iran meeting in three months (CNBC).
- Iran has publicly disclosed three of the seven conditions it has set for reopening the Strait of Hormuz — an immediate end to the U.S. naval blockade, the return of frozen Iranian assets, and a halt to the conflict on all fronts — while the other four remain undisclosed, and none of the public terms had been met by Washington as of September 23 (AGBI).
- Macquarie's Thierry Wizman called this a 'critical week for oil,' noting the Fed, Bank of Japan, Bank of England and ECB are already citing energy prices and geopolitics in policy deliberations (Rigzone).
Saudi Aramco began running tests on September 22, 2026, to resume flow on its East-West Pipeline, the kingdom's main overland bypass around the Strait of Hormuz, nine days after a drone strike forced its shutdown, according to Bloomberg. The line — also called Petroline — can move up to 4 million barrels a day from Eastern Province fields to the Red Sea port of Yanbu, sidestepping the chokepoint Iran has kept under a naval blockade through a war with the United States and Israel that AGBI describes as nearly seven months old. Brent crude rose above $101 a barrel on September 23, snapping a five-session losing streak, as markets weighed that testing news against a first direct U.S.-Iran meeting in three months, per CNBC and Rigzone market data.
A Test, Not Yet a Restart
Bloomberg's own reporting frames this as a test phase, not a completed reopening: the line could reach roughly 40% of capacity within days, but Bloomberg reported a full return to normal operation would take six to eight weeks. Until Aramco confirms the line is fully back, Saudi Arabia's bypass capacity stays partial, and it covers only the kingdom's own exports. EIA's chokepoint analysis puts total Hormuz throughput at roughly 20.9 million barrels a day of crude and products, in its most recently published estimate covering the first half of 2025.
Tehran's Partial Price for Reopening the Strait
Iran has not offered a timeline for lifting its blockade of Hormuz — it has offered a partial list of conditions. AGBI reported Tehran communicated seven conditions to Washington for ending the conflict and reopening the strait, of which only three have been made public: an immediate end to the U.S. naval blockade, the return of Iran's frozen assets, and a halt to the conflict on all fronts. The other four remain undisclosed, and none of the public terms had been met as of September 23, 2026. That leaves Aramco's pipeline testing as a Saudi hedge against a chokepoint Riyadh does not control, not a signal that the underlying dispute is close to resolved.
The Spread Between the Test and the Barrel
Wednesday's rally measures sentiment, not settled supply. Brent had fallen for five straight sessions into a two-week low near $98 on September 22 as Trump said U.S. and Iranian officials held a three-hour meeting in New York, per CNBC; it rose back above $101 the next day even as Iran publicly said it would not surrender. WTI traded near $91.50 the same morning, per Rigzone's market data snapshot. The moves track headlines from the talks and the pipeline testing news, not a confirmed change in physical flows through Hormuz itself, which stays under blockade.
Why This Week Reaches Beyond the Desk
Macquarie strategists, led by Global FX and Rates Strategist Thierry Wizman, called this 'a critical week for oil — and thus for everything else,' per Rigzone, arguing the New York talks could set crude's medium-term direction. The firm noted the Federal Reserve, Bank of Japan, Bank of England and ECB are already citing energy prices and regional geopolitics in their own policy deliberations. This is analysis of what the barrel and pipeline data show, not a trading call; the size of the geopolitical risk is described here, not sold.
- Does Aramco's pipeline test mean Saudi Arabia has replaced the Strait of Hormuz?
- No. The East-West Pipeline's up-to-4-million-b/d ceiling is well under the roughly 20.9 million b/d of oil and products that transited Hormuz in EIA's most recently published chokepoint estimate (covering H1 2025), and it only reroutes Saudi Arabia's own exports, not those of Iraq, Kuwait, the UAE, Qatar or Iran.
- What has to happen before Iran allows Hormuz to reopen fully?
- Tehran has publicly disclosed three of the seven conditions it has set for the U.S. to meet: an immediate end to the naval blockade, the return of frozen Iranian assets, and a halt to the conflict on all fronts, according to AGBI reporting. The remaining four conditions have not been made public, and none of the disclosed terms had been met by Washington as of September 23, 2026.
- Why did Brent rise on September 23 if the war is unresolved?
- Reported: Brent rose above $101 a barrel, snapping a five-day losing streak, as traders weighed Aramco's pipeline testing news and the first direct U.S.-Iran talks in three months against Tehran's public statement that it 'will not surrender,' per CNBC — a diplomatic-opening rally, not a supply resolution.
- A Critical Week for Oil — Rigzone
- Oil prices rise, snap five day losing streak as Iran vows it will not surrender — CNBC
- Oil prices fall for fifth day after Trump says U.S. met with Iran for three hours — CNBC
- Saudi Arabia Running Tests to Resume East-West Oil Pipeline — Bloomberg
- Iran open to US talks but says seven conditions must be met — AGBI
- EIA World Oil Transit Chokepoints — U.S. Energy Information Administration