Our Global Commodities Strategist Martijn Rats discusses why the restart of oil flows through the Strait of Hormuz may be slower and tighter than the market expects.

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Welcome to Thoughts on the Market. I’m Martijn Rats, Morgan Stanley’s Global Commodities Strategist. Today – how fast can Middle East production return?

It is Thursday, June the 4th, at 3pm in London.

Every time you pull into a gas station, those prices are staring back at you. What you see at the pump is just the front end of a global system we’ve been watching for months: tankers, storage, insurance, and shipping lanes, all still constrained by the Strait of Hormuz. But while prices at the pump are still high, Brent has actually fallen back to around about $92 a barrel.

In inflation-adjusted terms, today’s Brent price is actually right at the 50th percentile of the last 20 years – suggesting that the market is assuming a clean, near-term recovery in supply. Yet the disruption continues to be extraordinary. Roughly 11 million barrels per day of Gulf crude remains offline, close to half the region’s pre-conflict output.

We think the market may be too optimistic. Our working assumption is now that meaningful export recovery through the strait begins only in the second half of July. Even then, normal does not return with the flip of a switch.

First, ships need to be willing to sail. Owners and insurers need confidence that the waterway is safe. If mines remain in traditional shipping lanes, the strait can be technically open but still operate at reduced capacity. Clearing that risk can take weeks, and potentially several months.

Second, the tanker fleet is in the wrong place. When ships cannot work in the Gulf, they move elsewhere. Bringing enough empty tankers back to lift crude takes time.

Third, storage is a limiting factor. Oilfields cannot restart if export tanks are full. For producers that rely heavily on seaborne exports, empty tankers are therefore essential.

Last, oilfields themselves need restarting. Before the closure, around 36,000 wells were active across six Gulf producers. Roughly 10,000 of those are currently offline. After a shut-in of nearly five months, about 4,000 to 5,000 wells could face restart constraints. Reservoir pressure can decline, equipment can fail after sitting idle, and flowlines need cleaning and safety checks.

All told, around 75 percent of lost supply can probably come back within four months after flows through the Strait of Hormuz resume. But the final 25 percent may take well into 2027.

So why have prices not moved more? The market began this shock with buffers. Inventories were elevated, oil-on-water was high, and emergency relief releases helped. The U.S. increased seaborne net exports of crude oil and refined products from roughly 5 million barrels a day to 9 million barrels a day. At the same time, China’s seaborne net oil imports fell from around 13 million barrels a day a year ago to just over 7.5 million a day over the last 30 days.

But these cushions are thinning. Strategic reserve releases are scheduled to drop from about 2.5 million barrels per day in April through June to about 0.7 million in July and August. U.S. gasoline and diesel inventories are already well below five-year seasonal lows. China is already on track for five consecutive months of unusually low crude buying for April through August delivery. But that starts to raise the probability that Chinese buyers return for September barrels. Buying for September typically starts mid to late June.

Now, oil is trading like the disruption is nearly over. But at the same time, the physical system is telling a slower story. Prices may look calm on the screen, but the bottleneck is in tankers, storage tanks, wells, and crews.

Our Brent forecasts remain $110 per barrel for the second quarter and about $100 a barrel for the third quarter. We recently raised our estimates for the fourth quarter to $95 and the first quarter of 2027 to $85 a barrel, and expect a return to $80 eventually thereafter.

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