A major Saudi oil pipeline outage is threatening to remove up to 4% of global oil supply from international markets, adding fresh pressure to an already strained energy system as disruptions to the Strait of Hormuz and Red Sea shipping routes intensify.
Saudi Arabia has temporarily shut its East-West pipeline following drone attacks on the vital crude conduit, which has become a critical alternative export route amid the war-related disruption in the Strait of Hormuz. The closure threatens to deepen the global oil supply squeeze and push prices higher if repairs take longer than expected.
The 1,200-kilometer pipeline, also known as Petroline, transports crude from Saudi Arabia’s oilfields in the east to the Red Sea port of Yanbu. It has been moving between 4 million and 5 million barrels per day recently, equivalent to roughly 4-5% of global oil supply, according to ship-tracking companies and analysts cited by Reuters.
Alternative route under threat
The pipeline’s importance has grown sharply since tanker traffic through the Strait of Hormuz slowed to a trickle amid the conflict between the US and Iran. By moving crude across the Arabian Peninsula to Yanbu, Saudi Arabia has been able to bypass the congested Gulf shipping route and maintain access to markets west of the Kingdom.
The latest attack threatens that workaround. Saudi Arabia’s Energy Ministry said the pipeline had been stopped as a precaution after the strikes, which caused injuries and material damage. Satellite imagery showed smoke rising from an area along the pipeline south of Medina.
The attacks took place in Saudi Arabia’s Riyadh and Medina regions. Riyadh and Baghdad said the drones originated in Iraq, where Iran-backed militias operate. No group had immediately claimed responsibility, while Iraq launched an investigation and dismissed a military commander linked to operations in Maysan province, near the Iranian border.
Saudi Arabia has so far held back from retaliation at Baghdad’s request, giving the Iraqi government time to investigate and prevent further attacks from its territory. The episode nevertheless highlights the growing vulnerability of the kingdom’s energy infrastructure as the regional conflict widens.
Stocks offer only limited relief.
The immediate concern for oil traders is not simply the volume of crude that the pipeline can carry, but how long Saudi Arabia can sustain exports while the alternative route remains unavailable.
According to Reuters, existing stocks at Yanbu could be depleted within five to seven days if the pipeline remains offline. Egypt’s Ain Sukhna and Sidi Kerir ports provide some relief with additional supplies, but the available volumes remain limited.
The narrow stock cushion means the duration of the outage will be critical. Inventories and alternative logistics can absorb a brief interruption.
A prolonged shutdown, however, would increase the risk of actual supply losses, potentially tightening the market further at a time when buyers are already competing for fewer available barrels.
Saudi oil production has also been under pressure. Reuters reported that output had fallen from 10.9 million barrels per day in February to 6.2 million bpd in August, its lowest level in more than three decades. The International Energy Agency has forecast a global oil supply decline of 5.7 million bpd, or 6%, this year.
The Red Sea adds to energy risk
The pipeline shutdown comes as Iran-aligned Houthi forces in Yemen tighten their grip on Red Sea shipping.
The Houthis have seized Perim, also known as Mayun Island, at the mouth of the Bab el-Mandeb Strait, according to Yemeni government sources cited by Reuters. The strategic waterway connects the Red Sea with the Gulf of Aden and is an important route for oil tankers travelling between the Middle East and Europe.
The development creates a double challenge for Saudi Arabia. Its East-West pipeline had offered a way around Hormuz, but the Red Sea route itself is now becoming more dangerous. MarketWatch reported that oil shipments through Bab el-Mandeb had ceased, while Saudi Arabia was attempting to reroute exports through Egypt’s Sidi Kerir port, a more costly and time-consuming option.
The combination of a blocked or severely disrupted Hormuz route, a threatened Red Sea corridor, and damage to Saudi Arabia’s principal east-west crude pipeline leaves fewer reliable options for moving oil to international customers.
Prices and inflation in focus
Oil markets have already reacted to the worsening supply outlook. Brent crude has risen above $100 a barrel, while diesel prices in the US have reached record levels, according to Reuters and the Financial Times. The disruption is also raising concerns over inflation, particularly as higher transport and energy costs feed into consumer prices.
For the GCC, the crisis presents a difficult balance between protecting critical energy infrastructure and preventing further escalation. Saudi Arabia has asked Washington for military assistance against the Houthis, while the United States faces pressure over the economic impact of rising fuel prices.
The pipeline outage is therefore more than a temporary operational setback. It is a test of Saudi Arabia’s ability to maintain crude exports under sustained geopolitical pressure and a warning to global oil markets that the loss of a single alternative route can have consequences far beyond the Arabian Peninsula.
For traders, refiners, and governments, the next few days will hinge on the speed of repairs, the availability of alternative export routes, and whether attacks on regional energy infrastructure continue. Until those questions are answered, the threat of a supply shock remains firmly in focus.