Oil Prices Climb as Saudi Pipeline Shutdown Adds to Global Supply Pressure

Energy markets started the week under renewed pressure, with crude and diesel prices moving higher as supply disruptions in the Middle East and Russia continue to tighten global fuel markets. Prompt WTI futures were up more than $3.50 per barrel Monday morning after gaining roughly $9 per barrel last week. The latest move follows attacks on Saudi Arabia's East-West Pipeline, increasing uncertainty around one of the most important alternative routes for moving crude around the Strait of Hormuz.

The Saudi pipeline has become especially important during the current conflict. For the past six months, Saudi Arabia has used the route to move roughly 4 million barrels per day to the Red Sea port of Yanbu, allowing exports to bypass disruptions through the Strait of Hormuz. That volume represents about 4% of the global oil supply. However, drone attacks forced the pipeline offline on Friday, and Saudi Arabia has not provided details on the extent of the damage or how long repairs could take.

That creates a growing concern around Saudi export capacity. Industry sources estimate that Yanbu currently has enough stored crude to maintain exports for only five to seven days. Saudi Arabia also has some additional supplies available through Egyptian ports, but those inventories are limited as well. Without the East-West Pipeline returning to service, existing stocks would eventually be depleted.

The disruption comes at a time when Saudi production has already fallen sharply. Saudi Arabia reported production of 6.2 million barrels per day in August, down from 10.9 million barrels per day in February before the war began. Across the region, flows through the Strait of Hormuz are estimated at roughly 6 million to 9 million barrels per day, compared with much higher levels before the conflict.

Concerns are also spreading to the Red Sea. Houthi forces captured Yemeni islands near the Bab el-Mandeb strait, adding another layer of uncertainty around regional shipping routes. At the same time, a planned meeting between Iran and several Gulf nations regarding a temporary shipping lane through the Strait of Hormuz was postponed at Saudi Arabia's request amid concerns about continued attacks on Saudi territory.

These disruptions are being reflected not only in futures prices but also in the physical crude market. Brent climbed back above $100 per barrel last week and rose another 3% on Monday to its highest level since May. Spot premiums for Dubai and Oman crude reached their highest levels since March, while crude from the U.S., West Africa, and Latin America also commanded significantly higher premiums amid competition for alternative supplies among Asian refiners.

Asian refiners are paying considerably more for those barrels. South Korea's SK Energy recently purchased 4 million barrels of U.S. WTI for December delivery at a premium of about $24 per barrel to November ICE Brent swaps. U.S. cargoes sold only a month earlier had carried premiums closer to $13 per barrel to Dubai quotes. Chinese independent refiners are also searching for alternatives as Iranian and Russian supplies decline.

Diesel remains one of the most pressured parts of the market. Continuing refinery outages in the Middle East and Russia, declining inventories and a growing geopolitical risk premium have pushed diesel prices and refining margins higher. U.S. retail diesel prices have reached approximately $6 per gallon, while diesel inventories are moving in the opposite direction from what would normally be expected ahead of the fourth-quarter demand season.

OECD diesel inventories are estimated to be about 2% below year-ago levels, while U.S. diesel inventories have declined approximately 3% since mid-July instead of posting their typical seasonal build. Refinery supply is also constrained, with global refinery runs estimated at 7.9 million barrels per day below last year. Russia remains a major part of that shortfall, with refinery runs running 2.3 million barrels per day below seasonal norms, reducing diesel, fuel oil and naphtha exports.

There are some potential sources of relief. Chinese refinery runs and refined-product exports could increase as capacity returns from maintenance and high margins encourage refiners to use remaining export quotas. China still has significant unused clean-product export quotas for 2026, potentially allowing refined-product exports to rise later this year. However, the provided research notes that those additional barrels are unlikely to fully offset the larger export losses from the Middle East and Russia.

Demand is also showing signs of weakness in several major markets. The IEA now expects global oil demand to contract by 2.5 million barrels per day year over year in 2026, while high retail fuel prices are weighing on consumption. China's diesel demand fell 11.5% during the first half of the year, while U.S. gasoline demand is estimated to be down about 2% from a year earlier.

For now, however, supply risks continue to dominate the market. The loss of Saudi Arabia's key bypass pipeline, uncertain flows through the Strait of Hormuz, refinery outages in Russia and the Middle East, and already-low product inventories are keeping pressure on crude and refined-product prices. Demand weakness and additional Chinese exports could eventually provide some relief, but until disrupted production and shipping routes begin to recover, energy markets are likely to remain highly sensitive to each new development.