Saudi Arabia built the East-West pipeline for exactly this scenario. It moves 4 to 5 million barrels a day from the kingdom's eastern oilfields to the Red Sea port of Yanbu, bypassing the Strait of Hormuz entirely. When Iran closed the Strait on February 28, the pipeline became Saudi Arabia's primary remaining export route. On September 10 and 11, Iran-aligned militias operating in Iraq's Maysan Governorate struck it with drones, hitting pumping stations and forcing a shutdown.
The Mechanism: From Pipeline to Portfolio
The chain runs in four steps. First, the Strait of Hormuz closure removed the direct maritime route for a large share of Gulf crude exports. Second, the East-West pipeline was the workaround, and it worked, until September 10. Third, with both routes constrained simultaneously, the International Energy Agency reported Saudi crude supply falling to its lowest level in more than three decades. Fourth, that supply loss showed up immediately in price: WTI crude has risen 25% over three weeks, from $82.36 on August 25 to $102.95, with the steepest single-day jump landing on September 10, the day of the strike itself.
For a Canadian portfolio, the transmission from there is direct rather than theoretical. Canadian Natural Resources, Tourmaline Oil and Suncor Energy have each moved higher through this stretch as the commodity climbed, a straightforward read-through for a country that is a net oil exporter rather than an importer.
Tail Risk or Base Case
The realistic read here sits closer to tail risk than base case. Saudi Arabia has a strong incentive to restore the pipeline quickly, and the shutdown was described as precautionary rather than a confirmed total loss of the infrastructure. The base case remains that this is a supply disruption measured in weeks, not a permanent reduction in Saudi export capacity. What has changed is that the market no longer has a second option if the Strait situation also does not resolve on the timeline it has been pricing.
That is the distinction worth holding onto: before September 10, a Canadian advisor could reasonably tell a client that Saudi Arabia had a working alternative to Hormuz. That is no longer true, even temporarily, and the market's WTI is pricing the loss of optionality directly.
The shaded region marks the period since the September 10 to 11 pipeline strike, during which Saudi Arabia lost its primary Hormuz workaround while the Strait itself remained closed. Source: Investing.com, International Energy Agency.
What Changes for Canadian Advisors From Here
The near-term watch items are narrow and specific: whether Saudi Arabia restores East-West pipeline flow, and whether Iran-aligned militia activity in Iraq expands beyond this single strike. Either development would move WTI again, and Canadian energy names would follow directly. Absent a resolution to the underlying Strait of Hormuz closure, the market has lost the buffer that made the original closure more tolerable, and Canadian portfolios with direct energy exposure should expect the sensitivity to headlines out of this specific corridor to stay elevated through the fall.