Iran Closes Strait of Hormuz, Disrupting Nearly One Billion Barrels of Oil Flow

Iran has imposed a blockade of the Strait of Hormuz, resulting in the loss of nearly a billion barrels of oil with the shortage growing worse every day the sea lane remains closed. Vessels were present in the Strait of Hormuz, Musandam, Oman on May 8, 2026.

The world's energy system will change as a result of the Iran war, the CEOs of key oil and gas companies told investors on their earnings calls over the past two weeks.

The disruption has demonstrated the fragility of the global energy system, said Olivier Le Peuch, CEO of SLB. "It's going to drive fundamental structural change across the energy landscape," said Lorenzo Simonelli, the CEO of Baker Hughes. "It is no longer simply a talking point," said Jeffrey Miller, the CEO of Halliburton.

Investment in oil exploration and production will increase as a consequence of the Iran war and blockade, the CEOs said. Low carbon solutions like geothermal, nuclear and grid modernization will continue to see investment, said Lorenzo Simonelli. "It's not just about increasing energy supply.

It's about the robust and resilient energy infrastructure and greater redundancy, diversifying infrastructure, reducing reliance on any single large-scale assets," said Lorenzo Simonelli, the CEO of Baker Hughes. The closure of Hormuz has underscored the dependence particularly of Asian economies on the Middle East for crude oil and liquefied natural gas imports.

"Obviously, people are going to reassess their energy security and how they ensure that, going forward, they don't have the same exposure," said Darren Woods, CEO of Exxon Mobil.

Governments will aim to diversify their energy supplies, the oilfield service CEOs said. Governments will also have to rebuild oil stockpiles that have taken a hit due to the war, the executives said. "There's going to be a rebuilding of global inventories above historical levels to ensure that energy security is at the foremost," said Lorenzo Simonelli.

Crude oil will become more important than it has ever been in helping the world preserve energy security, said Kaes Van't Hof, the CEO of Diamondback Energy. U.S. crude exports have hit record highs during the war.

The oil market is now tighter due to supply disruption, said Jeffrey Miller. The market has shifted from expectations of a surplus this year to a big deficit, said Jeffrey Miller. This will support elevated oil prices after the war is over, said Olivier Le Peuch.

Higher prices will encourage investment in offshore and deepwater opportunities in Africa, the Americas and Asia, said Olivier Le Peuch. "Africa represents one of the most compelling long-term opportunities, with a significant base of underdeveloped oil and gas resources," said Olivier Le Peuch, CEO of SLB.

"We expect portfolio allocation to shift more favorably towards this region over time," said Olivier Le Peuch.