RIYADH, SAUDI ARABIA — Saudi Arabia shut its East-West crude pipeline after drone attacks launched from Iraq damaged the system, temporarily removing a route that Aramco had expanded to 7 million barrels a day to keep oil moving around disruption in the Strait of Hormuz.
Saudi Arabia has shut its East-West crude pipeline as a precaution after multiple drone attacks damaged the strategically important system, placing fresh pressure on one of the principal routes being used to keep Gulf oil moving while traffic through the Strait of Hormuz remains severely disrupted.
The closure is economically significant not simply because another Saudi energy asset has been struck, but because the pipeline has become a central part of the kingdom’s contingency network. Saudi Aramco said in May that it had ramped the system to its maximum capacity of 7 million barrels per day during the first quarter, allowing crude to move west to Red Sea export facilities rather than relying on the Persian Gulf route through Hormuz.
Saudi Arabia’s Energy Ministry said the East-West Pipeline in the Riyadh and Madinah regions was subjected to several attacks on the morning of Thursday, September 10. Authorities stopped the line as a precaution, reported injuries and sent emergency and specialist technical teams to secure the infrastructure and assess its safety. No restoration timetable was included in the ministry’s announcement.
That official chronology corrects one element of the initial reporting lead: the attacks themselves did not occur on September 12. They took place on September 10; the shutdown was announced publicly on September 11, while further Saudi statements and international reporting continued into September 12.
Saudi Arabia’s Foreign Ministry subsequently said the drones had been launched from Iraqi territory and caused injuries and material damage that was still being addressed. Riyadh said it was withholding an immediate response after Iraq’s prime minister asked for time to prevent further attacks originating from his country.
The Saudi statement establishes the government’s position on where the drones came from, but it does not publicly establish who ordered, controlled or sponsored the strike.
The pipeline had become a 7-million-barrel-a-day escape route around Hormuz
The East-West system links Saudi Arabia’s oil-producing east with Yanbu on the Red Sea. Aramco’s 2026 first-quarter presentation describes a route of about 1,200 kilometres with roughly 7 million barrels per day of crude capacity, including about 2 million barrels per day feeding refineries.
The company said it transformed its normal supply and export pattern within eight days as the regional crisis intensified, pushing the East-West Pipeline to the 7 million-barrel-per-day level and using alternative western outlets.
That makes the latest shutdown more consequential than an interruption to a lightly used backup system. Aramco was still reporting “continued utilization” of the East-West Pipeline in its August second-quarter results, describing the infrastructure, storage network and export terminals as important to maintaining continuity during what it called an unprecedented disruption through Hormuz.
Reuters reported Saturday that the pipeline had recently been moving about 4 million to 5 million barrels a day. That current-flow estimate has not been independently published in the Saudi official statements reviewed for this article and should therefore remain attributed to Reuters.
At 4 million to 5 million barrels a day, the reported flow would represent about 57% to 71% of the pipeline’s temporary 7 million-barrel-per-day maximum capacity. That is a CRN Times newsroom calculation based on Reuters’ reported throughput and Aramco’s published capacity, not an official Saudi utilization figure.
Hormuz flows had already fallen from 21 million to 4.9 million barrels a day
The shutdown lands in an oil-transport system already operating far outside normal conditions.
U.S. Energy Information Administration data show that crude and petroleum-liquid traffic through the Strait of Hormuz averaged 20.9 million barrels per day in the first quarter of 2025 and 21.6 million barrels per day in the fourth quarter. By the second quarter of 2026, flows had fallen to 4.9 million barrels per day.
That represents a decline of roughly 77% from the first-quarter 2025 level, based on a newsroom calculation using the EIA figures.
The EIA said Saudi Arabia had responded by rerouting crude through the East-West Pipeline to Yanbu, contributing to a sharp increase in oil flows through Bab el-Mandeb from 5.4 million barrels per day in the fourth quarter of 2025 to 8.1 million in the second quarter of 2026.
The practical effect is that regional oil logistics have become more dependent on infrastructure outside Hormuz at precisely the moment some of those alternatives are themselves facing security pressure.
EIA analysis has long described the East-West line as Saudi Arabia’s principal way to circumvent the Strait of Hormuz. Its normal crude capacity is about 5 million barrels per day, temporarily expandable to 7 million.
Red Sea pressure means the western route is not risk-free
Moving oil to Yanbu avoids Hormuz, but it does not remove geopolitical risk from the shipment.
Oil loaded on Saudi Arabia’s Red Sea coast may still need to transit Bab el-Mandeb if it is heading south toward Asia, while westbound cargoes can move toward the Suez Canal and Mediterranean. The security of those routes has become increasingly important as the Gulf conflict has disrupted traditional trade patterns.
Reuters reported Saturday that Houthi military advances in Yemen had intensified concern around Bab el-Mandeb, another chokepoint through which a significant share of global trade moves.
That creates a compounding logistics problem: the East-West Pipeline was designed to reduce dependence on Hormuz, but some of the crude arriving at the Red Sea can still encounter security threats farther downstream.
Yanbu itself has substantial export infrastructure. Aramco says the commissioning of Yanbu South Terminal added 3 million barrels per day of west-coast export capacity and gave the facility the ability to receive, store and load Arab Light and Arab Super Light crude.
Saudi Arabia restored full capacity quickly after an April attack
The kingdom has already demonstrated an ability to repair damage to the same oil corridor this year.
On April 12, Saudi Arabia’s Energy Ministry said earlier attacks had removed approximately 700,000 barrels per day of East-West Pipeline pumping capacity. Technical and operational work subsequently restored the line to its full capacity of about 7 million barrels per day.
The April episode provides evidence of Aramco’s repair capability but does not establish how quickly the September shutdown can be resolved. Saudi authorities have not publicly quantified the amount of capacity damaged in the latest strikes.
The distinction between a pipeline shutdown and an equivalent loss of crude supply is also important. A temporary stop does not automatically remove every barrel that would otherwise have travelled through the system. Storage, refinery demand, alternative export points, inventories and the duration of the closure all affect how much oil ultimately fails to reach the market.
Aramco explicitly highlighted domestic and international storage as part of its contingency system in its first-quarter results.
For markets, therefore, the most important operational data are not merely whether the line is technically shut, but how much capacity remains unavailable and for how long.
Oil was already above $100 before the full impact of the shutdown was known
The attack occurred in a market already pricing substantial Middle East supply risk.
Brent crude settled Friday at $104.61 a barrel, while U.S. West Texas Intermediate finished at $100.05, with both benchmarks heading for weekly gains of more than 8% as traders reacted to disrupted supply and escalating attacks on regional shipping and energy infrastructure.
Only two days earlier, Brent had settled at $107.63 after climbing more than 6% in one session.
That makes it difficult to isolate a clean “pipeline attack effect” from the wider war premium already embedded in prices. The East-West shutdown is one component of a broader supply shock involving Hormuz disruption, Red Sea insecurity, tanker attacks and damage to production and processing infrastructure.
The International Energy Agency’s assessment, reported by Reuters on September 11, put Saudi crude supply at 6 million barrels per day in August, down 2.3 million barrels a day from July and the lowest level in more than three decades. Saudi Arabia provided different figures to OPEC, underscoring the distinction between measures of production and estimates of oil reaching the market.
Iraq’s security response has not yet established who directed the strike
Iraq has faced immediate pressure because Saudi Arabia says the drones were launched from its territory.
Reuters reported that Baghdad dismissed a military commander after the attacks and that Iraqi authorities had determined the latest strikes originated inside Iraq. Reuters also reported that Iraq ordered the Shalamcheh border crossing with Iran closed as part of its security response. Those specific Iraqi actions remain dependent here on Reuters reporting because the corresponding primary Iraqi statements were not located in the official sources reviewed for this article.
U.S. President Donald Trump said on Saturday that he believed Iran was probably responsible for the attack, but he did not publicly provide evidence establishing that attribution.
That claim should remain separate from what Saudi Arabia has officially established. Riyadh says the drones came from Iraq; it has not publicly identified the ultimate sponsor in the material reviewed here.
For energy markets, attribution matters because evidence tying the attack to a government or armed group could affect the risk of retaliation and further infrastructure attacks. But those consequences cannot responsibly be assumed before the investigation establishes more.
Repair time and actual lost exports are now the key market variables
Three figures will determine whether the shutdown becomes a brief operational interruption or a significant new constraint on global oil supply.
The first is the amount of pumping capacity physically damaged. Saudi Arabia has not published that number.
The second is the restoration timetable. The Energy Ministry said technical teams were assessing the system but gave no date for resuming service.
The third is the effect on export volumes. Because Saudi Arabia has storage and multiple terminals, lost pipeline throughput does not necessarily translate one-for-one into lost exports. The longer the interruption continues, however, the harder it becomes to absorb without affecting loadings or production.
That distinction is why the next Saudi operational update is more important for oil markets than the closure headline alone.
The attack has already demonstrated something strategically significant: the infrastructure Saudi Arabia activated to reduce its exposure to the Strait of Hormuz is itself vulnerable during the current regional conflict. With Hormuz traffic sharply reduced and pressure also building around the Red Sea, the global oil system has fewer uncomplicated alternatives than it did before the conflict.