For decades, the potential closure of the Strait of Hormuz has been considered the ultimate doomsday scenario for global oil markets. So, when Iran effectively closed the Strait earlier this year in response to the joint U.S.-Israeli assault, many analysts warned that oil prices could skyrocket to record highs.
The logic was straightforward. Prior to the war, about 20% of the global oil supply transited the Strait. A loss of supply on this scale could easily have pushed oil prices to $150 or even $200 per barrel — but it didn’t. Instead, prices peaked around $120 per barrel in April and have largely stayed below $100 since June.
To understand the dynamics that have so far prevented an even higher price spike, and to get a sense of where oil supply and prices may be headed as the conflict drags on, I spoke with Rory Johnston, a leading oil markets analyst and the author of the Commodity Context blog. Our conversation has been edited for length and clarity.
Sam Fraser: Let’s talk about why we haven’t seen the $150-200 per barrel oil prices that you warned about early in the war. You’ve pointed to a few reasons, including China’s massive import cuts. As we understand it, what has China done with their oil imports and how have they managed it?
Rory Johnston: It’s a bit of a mystery. At this stage, what we know for sure is that China reduced its crude oil imports by over five million barrels a day, roughly 45% of their total pre-war import appetite. For China, there’s two endpoints of that crude oil balance: into a refinery or into storage. We know that China had been building up a massive volume of strategic reserves prior to the war.
Essentially half of the 5 million barrels a day reduction can be explained roughly by reductions in refining runs in China. The remainder is a question of balancing in and out of stockpiles. Some of it would’ve been likely a drawdown of less visible or underground stockpiles. And the other portion of it is the halting of that prior pace of stockpile building. The main debate is how much each of these factors is contributing. If, let’s say, 80% of that remainder is a halt to prior purchases that were building strategic stocks, that is a bearish outcome for oil prices because it means that Beijing doesn’t need to replace those volumes anytime soon. But if they are aggressively drawing down less visible strategic stocks right now, that’s a much more bullish interpretation because it means they can’t keep going on forever and they’re going to need to replace those stockpiles.
On the refined product side, they cut refining runs by about 2.5 to 3 million barrels a day. What are they doing with that prior flow of diesel, jet fuel, et cetera? And that’s where we start to get even more speculative. Above-ground storage tanks for refined products don’t have floating roofs. We can’t independently verify their fill.
It comes down to the apparent consumption and the apparent available supply of these fuels within China. For gasoline and diesel, each of those supplies have apparently fallen by about 20%, which is a stark reduction. There’s no evidence that people in China are just driving a fifth less. If they aren’t actually cutting back that much on consumption, where is the fuel coming from? Prior to the war, we suspected that China was also building strategic reserves of refined fuels. Again, we can’t verify that, but if they had built that up, they could be drawing it down. We’re then faced with that same question as in crude oil, how much of this is a cessation of prior stock building and how much of this is the drawdown of existing stock?
For reference, the last moment we saw anything like this in terms of apparent consumption collapse was COVID zero in 2022 when the country was entirely locked down.
Fraser: So we can say that stockpiles of refined products must exist, but we have no insight into their size or how much is being drawn down or how sustainable those drawdowns would be?
Johnston: Correct. There are mixed estimates, but I think they are at best estimates. It’s funny, I think in some ways the lack of verifiable data allows people to speak very confidently about what’s happening in China, because there’s no data to rebut virtually any argument. That’s just allowing people to run with it without any kind of real pushback.
Fraser: How have we seen the Chinese buying patterns change since the U.S.-Iran Memorandum of Understanding and since it collapsed?
Johnston: What we saw following the MOU was a surge of exiting cargoes from Hormuz. The vast majority of that seems to have routed towards China. What we saw was that, at the very bottom, Chinese crude oil imports fell to around 6 million barrels a day in June. And then those spiked back up to more than 10 million barrels a day in July, or at least that was the high point in July. Roughly a month later, those imports are back down around six. You’ve seen a rollover back to where we stood pre-MOU.
Fraser: Do we know how long this import suppression can continue?
Johnston:. Let’s say this has been entirely a drawdown of stocks, which seems implausible. Even then, they have more than a billion barrels of crude oil stocks that we know about for sure. If they want to support the market to their maximum ability, they can do that for months further. But in doing so, they would deplete the entirety of the energy security blanket they’ve spent almost two decades constructing.
Fraser: Let’s move on to the strategic petroleum reserve releases by the U.S. and other partners. To what degree have those been instrumental in keeping prices from going a lot higher?
Johnston: It’s part of the suite that the world has kind of engaged in to blunt those effects. This is the largest release of strategic stocks on record. Depending on the exact month you’re talking about, it has potentially been over 3 million barrels a day of incremental supply coming from OECD SPRs. Without that, the market would’ve been much tighter and we likely wouldn’t have experienced the same relief even with China’s import cut at the same time.
Fraser: Last week the U.S. SPR dipped under 300 million barrels. There’s a lot of discussion of what the physical limits on those stockpiles are given that they’re stored in salt caverns. They need a certain amount of fill to maintain structural integrity. Are we anywhere close to pushing up against the U.S. ability to continue drawing down from those stockpiles?
Johnston: I do not believe we are. I think that you have probably at least another 200 million barrels that can be readily drawn down. With the required fill level, absolutely it would be a massive issue if you just drew it down and left a vacuum in there. It would implode on itself. But they don’t do that. They one-to-one replace a barrel of crude oil extracted with a barrel of saturated brine. So theoretically it should maintain the same fill. The issue for SPRs is not necessarily fill level, but number of refill and empty cycles. It’s the actual up-and-down motion that disturbs and further erodes the walls and structural integrity.
I think that the SPR caverns can get below 100 million barrels of fill before we run into any issues.
Fraser: So if we continued the current rate of drawdown, that would take us well into next year.
Johnston: Correct.
Fraser: Over the course of the war, Trump or someone in his administration will make a statement about how diplomacy is progressing or about how much oil is coming out of the strait. And even if those are quickly disproven, there is a downward impact on prices. So why do these traders keep listening to Trump? Has there been a change in the reaction of markets over the course of this war?
Johnston: You definitely get smaller drawdowns to these kinds of jawboning attempts today than you would have, say, in March and April, where there are multiple days that you saw $15 to $20 per barrel reductions in the span of a day.
When you look at the history of oil, there’s a tendency on these geopolitical events to overdo it. That’s a natural kind of fear-driven phenomenon. In some ways Trump has short-circuited that normal behavior in oil markets. Because while you’re right that it’s never coming true, the price action is coming true. At the end of the day, for prices to go higher, you need traders to bid higher. And if they bid higher and they get blown out of the water and they lose their jobs, they’re going to be replaced by someone that doesn’t bid higher on geopolitical risk. It has successfully arrested the upside volatility. But if we keep getting tighter, markets will continue to respond higher; we just won’t get those runaway phenomena that we would’ve seen historically.
Fraser: Since the start of the war, we’ve seen Saudi Arabia and the UAE successfully use pipelines as an alternative route to get oil out of the Gulf. How much oil are those getting out at this point? And has the Houthi blockade of Saudi shipping in the Red Sea had a meaningful effect on this?
Johnston: The total volume coming out of Emirates at Fujairah and then the west coast of Saudi Arabia and the Red Sea rose to about 6-7 million barrels. It was about 2-3 million before, so that was an incremental change of 4-5 million barrels.
To your question with the Houthis, it has absolutely been having an effect. As soon as they started attacking Saudi ships, the entire Red Sea fleet went dark. Everyone turned off their transponders, making it much harder to verify flows out of Saudi Arabia. Verifiable transits of Saudi tankers through the Bab al-Mandab have gone functionally to zero. They still are probably getting some out, but we’re also seeing evidence of flows north into the Mediterranean. Pre-war flows here were around a million barrels a day, give or take. That’s jumped over the past week or two to around 2.5 million barrels a day, presumed Saudi flow.
Over the past two weeks, we’ve also seen Saudi Arabia begin loading tankers in the Gulf again, which they hadn’t done since the collapse of the MOU. And the question is, does Riyadh know something? Is something big going to break in the Hormuz negotiations? Or are they being forced back into the Gulf? You’re seeing reports now that they are participating in the Emirati-led shuttle trade, ship-to-ship transfers in the Gulf of Oman. It seems likely that some of that is displaced barrels coming back from the Red Sea. So Saudi Arabia is needing to diversify away from its diversification. There’s a poetic side to it.
Fraser: Pulling all these factors together, where are we left in terms of a kind of global supply shortage? And what kinds of price impacts can we expect if that persists over the next few months?
Johnston: It’s very hard to estimate global balance right now. My bet would be 2-4 million barrels a day undersupplied on a global basis.
The rub on top of that is that we now have a parallel crisis that’s emerging on the refining side of the slate. So even if we’ve sorted out what was happening on the crude oil side, we have the Ukrainian hammering of Russian refineries, the attacks in the Black Sea, the reduction in U.S. exports now that stocks have drawn down, and China is not exporting refined products either. All together this further tightens global refined product markets.
If this persists and we keep drawing down crude oil stocks, the crude oil price is going to keep rising. On top of that, we could see refined product prices independently going higher. So that’s just an amplification. For consumers, it’s refined product prices and not crude oil that are going to drive those economic issues.
Fraser: So even though these factors we’ve discussed have kept oil prices down so far, and the biggest of these can persist for a while, we could still be looking at those extremely elevated prices by a few months from now.
Johnston: Easily. We’re already feeling it. Refined prices are already at demand-destructive levels. It’s just a question of whether they are at sufficiently demand-destructive levels. It’s the same fundamental concern I would’ve had back in April, playing out on a much longer timeline and now more on the product side than the entire oil complex.
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