U.S. Crude Inventories Plunge Amidst Robust Refinery Activity and Shifting Product Balances
The U.S. oil market witnessed a substantial drawdown in commercial crude oil inventories last week, signaling strong demand and refinery utilization. Excluding volumes held in the Strategic Petroleum Reserve, domestic crude stocks decreased by a significant 7.9 million barrels for the week ending May 15, 2026. This notable reduction brought total U.S. crude oil inventories to 445.0 million barrels. Despite the weekly decline, current crude levels still stand 2% above their five-year average for this specific period, reflecting a sustained, albeit tightening, supply picture.
This significant crude draw comes as U.S. refineries ramped up operations. For the week ending May 15, 2026, crude oil inputs to refineries averaged 16.3 million barrels per day (bpd), an increase of 80 thousand bpd from the previous week. Refinery utilization rates climbed to 91.6% of operable capacity, indicating refiners are actively preparing for peak driving season demand or responding to existing product market tightness.
Key Petroleum Product Dynamics Emerge from Weekly Data
While crude stocks saw a sharp decline, the production landscape for refined products presented a mixed picture. Gasoline production experienced a decrease last week, averaging 9.3 million bpd. This dip occurred even as refinery throughputs rose, suggesting potential shifts in feedstock allocation or maintenance schedules impacting specific product streams. Conversely, distillate fuel production, which includes diesel and heating oil, saw an increase, averaging 5.0 million bpd. This rise in distillate output could be an indicator of robust industrial demand or strategic inventory building ahead of seasonal requirements.
Crude and Product Imports Reflect Global Supply Adjustments
U.S. crude oil imports saw an uptick last week, averaging 6.0 million bpd, an increase of 116 thousand bpd from the prior week. Over the most recent four-week stretch, crude oil imports maintained an average pace of approximately 5.8 million bpd, marking a 1.5% increase compared to the corresponding four-week period in the previous year. This consistent inflow underscores the ongoing reliance on international supplies to meet domestic refining needs and manage inventory levels.
Beyond crude, product imports also played a role in balancing the market. Total motor gasoline imports, encompassing both finished gasoline and its blending components, averaged 547 thousand bpd for the week. Distillate fuel imports, providing additional supply to a potentially tight market, averaged 173 thousand bpd. These import figures highlight the dynamic nature of the U.S. energy supply chain, where international trade supplements domestic production to meet consumer and industrial demand.
Product Inventories Signal Diverse Market Conditions
The inventory situation for refined products painted a varied canvas, with some segments showing tightness while others indicated ample supply. Total motor gasoline inventories experienced a decrease of 1.5 million barrels from the prior week. This drawdown is particularly significant as gasoline stocks now sit approximately 5% below their five-year average for this time of year, signaling a leaner market ahead of summer demand. Both finished gasoline and gasoline blending components contributed to this overall decline, reflecting sustained consumption and potential shifts in blending strategies.
Distillate fuel inventories, in contrast, saw a modest increase of 0.4 million barrels last week. Despite this build, distillate stocks remain about 9% below their five-year average for the period, suggesting that while some rebalancing occurred, the market for diesel and similar fuels is not yet flush with supply. For energy investors, this continued deficit against historical averages warrants close attention.
A notable outlier in the inventory data was propane/propylene. These inventories expanded by 0.4 million barrels from the previous week and now stand a substantial 51% above their five-year average for this time of year. Such an elevated surplus suggests healthy production or muted demand in this segment, potentially impacting pricing dynamics for petrochemical feedstocks and heating fuels.
Overall, the broader commercial petroleum inventory picture reflected a tightening trend, with total commercial petroleum inventories decreasing by 9.0 million barrels last week. This encompassing draw highlights a market actively consuming stocks across multiple product categories, driven by underlying demand and refinery activity.
Robust Demand Underpins Market Strength
Demand indicators for petroleum products remained robust over the latest four-week period, underscoring fundamental market strength. Total products supplied, a key proxy for consumption, averaged 20.2 million bpd. This figure represents a healthy 3.1% increase compared to the same four-week period in the previous year, demonstrating consistent growth in overall energy consumption across the U.S. economy.
Drilling into specific fuel categories reveals the drivers behind this demand. Motor gasoline product supplied averaged 8.9 million bpd over the past four weeks, showing a 0.5% increase from the equivalent period last year. While not a dramatic surge, this steady growth suggests resilient consumer driving habits and sustained mobility. Distillate fuel product supplied also saw an uptick, averaging 3.6 million bpd over the past four weeks, up 1.4% from the same period last year. This growth is typically indicative of healthy industrial activity, freight movement, and agricultural demand.
Further supporting the demand narrative, jet fuel product supplied posted a 1.0% increase when compared to the same four-week period last year. This continued growth in jet fuel consumption points to sustained recovery and stability within the air travel sector, a critical component of petroleum demand. Collectively, these demand metrics paint a picture of an energy market that, despite some inventory fluctuations, is experiencing solid underlying consumption, setting the stage for continued market scrutiny for investors.