Saudi Aramco has shut its 400,000-barrel-per-day Jizan oil refinery after a Houthi attack, according to an industry note seen by Reuters, adding another disruption to fuel markets already under pressure from conflict and trade restrictions.

What has been reported

The refinery was shut on 27 July after the attack damaged its Integrated Gasification Combined Cycle complex and part of the tank-farm area, according to the note from consultancy IIR.

The same note gave a tentative target of 15 August for repairs and a restart. That timetable has not been publicly confirmed by Aramco and could change depending on the extent of damage and safety inspections.

Aramco had not responded to Reuters' request for comment at the time of the report. The company had therefore not independently confirmed the shutdown details, the damaged units or the proposed restart date in a public statement.

The attack and the evidence

The Houthis said they had struck Aramco sites in Jizan and Yanbu on Saudi Arabia's Red Sea coast. Claims by a party to a conflict require caution, particularly when they describe the success or accuracy of an attack.

In this case, video verified by Reuters showed a large column of smoke rising from the Jizan refinery after the attack. That supports the conclusion that an incident occurred at the site, while the industry note provides the more detailed account of damage and operational consequences.

Why the refinery matters

Jizan is a large, modern complex designed to process around 400,000 barrels of crude oil each day into refined products. A shutdown does not remove the same quantity of crude from world supply, but it reduces the plant's ability to produce fuels such as diesel and other products needed by regional and international markets.

The timing is significant. Global fuel supplies have already been affected by wider Middle East disruption and restrictions on Russian diesel exports. Refining margins have risen sharply in some markets, meaning an extended outage could have a larger effect than it would under normal conditions.

A wider Red Sea front

The strike also shows how the conflict is spreading across energy and maritime infrastructure. Jizan lies close to Yemen, while Yanbu is farther north on the Red Sea and forms part of Saudi Arabia's strategic energy network.

Attacks on refineries, ports, pipelines or shipping can affect markets even when physical damage is limited. Companies may reroute cargoes, increase insurance cover, hold larger inventories or delay operations while risks are assessed.

Saudi-backed forces have also carried out strikes on Houthi-controlled areas in Yemen, creating a cycle in which energy facilities and transport routes face further retaliation.

What to watch

The first question is whether Aramco confirms the shutdown and provides a revised operating schedule. The second is whether the damage affects only the reported units or requires a broader inspection of the complex.

Markets will also watch for any further attacks on Saudi energy sites or shipping in the Red Sea. A single refinery outage can be managed through inventories and alternative supply. Repeated attacks across several facilities would present a much larger problem.

Until Aramco issues a public update, the most reliable formulation is that the shutdown, damage assessment and restart date are reported in an industry note seen by Reuters rather than confirmed directly by the company.