Saudi Aramco has warned that a closure of the Strait of Hormuz would knock 100 million barrels of oil off the global market every week. The state-owned oil giant’s alert underscores just how much the world depends on that narrow waterway.
The scale of the potential loss
One hundred million barrels a week works out to more than 14 million barrels a day. That’s a huge chunk of daily global output. While Saudi Aramco didn’t specify how long a closure would have to last to reach that number, the message is clear: even a short disruption would rattle markets.
Why the Strait of Hormuz matters
The strait connects the Persian Gulf to the Gulf of Oman. A vast share of Middle Eastern crude, liquefied natural gas, and refined products moves through that channel. Tankers carrying oil from Saudi Arabia, Iraq, Kuwait, the UAE, and Iran all rely on it. A closure would effectively bottle up the region’s exports.
What a closure would mean for markets
If oil stops flowing through Hormuz, buyers would scramble for alternative supplies. That usually means higher prices. Saudi Aramco’s warning doesn’t propose a specific trigger for a closure. But the very fact that the company is sounding the alarm suggests it sees a real risk. Past tensions in the area have led to tanker seizures and mine threats, though no sustained shutdown.
The global oil market is already tight. Any additional supply loss would push prices up quickly. The warning comes at a time when many countries are still wrestling with inflation and high energy costs.
What Saudi Aramco is doing
The company didn’t say whether it has a backup plan. Saudi Aramco has pipelines that can bypass the strait, but those have limited capacity. The company's main export terminals sit on the Persian Gulf side. Rerouting would mean sending crude overland to Red Sea ports, a slower and costlier option. The warning itself may be a signal to shipping insurers, trading firms, and governments to prepare for the worst.
No one at Saudi Aramco offered a timeline or scenario that could lead to a closure. The company just laid out the numbers. That leaves an open question: what exactly prompted the warning, and what happens if the strait actually shuts?
