The United States is acting as the global oil market's "lender of last resort" with unprecedented export volumes. Last week, the U.S. released over 1.23 million barrels per day from the Strategic Petroleum Reserve (SPR), setting a new weekly record. Over the past four weeks, the net export of U.S. crude oil and refined products has averaged a record 5.9 million barrels per day, nearly double the 3.3 million barrels per day from a year ago.
This has caused the comprehensive landed cost for a barrel of WTI crude oil delivered to Europe to plummet from nearly $160 to $106 within the past month. According to calculations, at the current release rate, the existing authorized release volume can sustain operations for approximately 117 more days, until early September. Even if the release rate is increased to 2 million barrels per day, it could be maintained until the end of July.
However, America's oil reserves are fundamentally different from the Federal Reserve's printing press. An opinion column notes that there is likely a window of opportunity in late May and June. After that, the continued drawdown of the SPR coupled with mounting pressure on commercial inventories will begin to raise market concerns about the sustainability of supply.
While the Americas as a whole have ramped up crude exports in response to the supply gap caused by the Strait of Hormuz blockade, the United States is the undisputed leader. Compared to the same period in 2025, the Americas' net exports have increased by nearly 4 million barrels per day, roughly equivalent to a quarter of the supply gap created by the Hormuz blockade. The U.S. accounts for the lion's share of this increase, with net exports rising by 2.6 million barrels per day. Other countries have also contributed: Canada added 400,000 barrels per day, Venezuela, Guyana, Colombia, and Argentina each added roughly 200,000 barrels per day, and Brazil added about 100,000 barrels per day.
This export surge has significantly impacted physical oil prices. Previously, Brent futures traded at a record premium of over $35 compared to the physical Brent Dated benchmark. This premium has now narrowed to less than $5.
The key driver behind this U.S. export surge is the SPR release, which has far exceeded market expectations. In March, the U.S., through a coordinated release with allies, committed to lending 172 million barrels of crude from the SPR. These barrels have already flowed to markets like the Netherlands, Italy, and Turkey. The market initially anticipated that the actual SPR release rate would struggle to approach 1 million barrels per day, but the actual figure has surpassed 1.23 million barrels per day, a historic weekly high. This indicates that approximately half of the increase in U.S. net exports has been achieved by depleting strategic reserves, not solely through increased production.
As of last week, the SPR has released a cumulative total of approximately 31 million barrels since the drawdown began. If the full authorized 172 million barrels are released, the remaining SPR inventory would fall to about 242 million barrels, reaching its lowest level since the early 1980s. While the option exists to order further releases, pushing an already weakened SPR to its limits could backfire and trigger market panic, as noted in commentary.
Once SPR resources tighten, the market's core focus will shift to whether the U.S. can fill the gap with commercial inventories and expanded shale production capacity. Regarding commercial inventories, when the export surge began, U.S. commercial crude stocks were above the five-year average but slightly below the ten-year average, providing some room for maneuver. On shale production, U.S. drillers will increase output, initially by rapidly completing drilled but uncompleted wells (DUCs). However, a substantive contribution to overall export volumes is not expected until the final months of this year, making it difficult to fill the gap in the short term.
Considering these factors, the current timeline is relatively clear. Analysis suggests the U.S. has an operational window through late May and likely extending into June. During this period, SPR drawdowns and commercial inventory pressure are not yet sufficient to trigger systemic market anxiety. Theoretically, this window provides the White House with a time buffer to potentially reach an agreement on Iran. However, once this window closes, the sources for incremental U.S. supply will narrow significantly, increasing the risk of renewed upward pressure on oil prices. As commentary succinctly puts it: The Federal Reserve can add another stack of paper and start the printing press, but America's oil tanks do not have the same privilege.
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