Saudi Arabia’s energy ministry called it a “precautionary” shutdown. The satellite pictures looked more serious. After drones struck on Sept. 10, CNN’s satellite images showed extensive fire damage at a Saudi pumping station near Al Mesba’ah, southeast of Medina. That one site helps explain why the East-West pipeline, the kingdom’s main way around the closed Strait of Hormuz, went quiet.
Oil does not slide across a desert on its own. Crude is thick, and the friction against the inside of a steel pipe slows it down mile after mile. So every so often along the route, a pumping station gives the oil a fresh push. Think of a relay race: each runner carries the baton for one stretch, then hands it to a fresh runner. The East-West line has 11 of these stations along its 1,200 kilometers.
A relay only works if every runner shows up. When one station stops, the oil behind it loses pressure, and flow along the whole line drops. A damaged section of pipe can often be cut out and replaced. A pumping station is harder to fix. It is packed with large pumps, motors and electrical equipment, and machinery that has been through a fire usually needs replacing and testing before it runs again.
There is already a smaller example. In April, a strike damaged one Saudi pumping station and cut the line’s flow by 700,000 barrels a day. Saudi Arabia said full capacity was restored within days. This time looks worse. The ministry has not said when pumping will resume, and Capital Economics warned the shutdown could last weeks, putting as much as 4% of world oil supply at risk.
Here is the scale. Before the attack, the pipeline was moving roughly 4 to 5 million barrels a day toward Yanbu, a port on the Red Sea. Not all of that was exported, because the line also feeds refineries on Saudi Arabia’s west coast. For now, tankers can still load oil already stored near the export terminals, but that cushion shrinks unless new oil arrives. Oil prices had already broken back above $100 a barrel in the days around the attack.
Iraq’s prime minister’s office said the drones were launched from Maysan province, which borders Iran. No group has claimed responsibility.
This is not the first weak point in Saudi Arabia’s detour. We looked at how the Red Sea exit can fail for the same reasons as the route it replaces, and how new alliances around the Houthis raise the risk at sea. A single building in the desert turns out to be another one.
My take: A pipeline only flows as fast as its weakest pump.
Not advice. Just how I see it.