US Oil Stocks Unexpectedly Rise as Refineries Slow Down

US crude oil reserves increased unexpectedly due to a significant slowdown in refinery activity, according to the US Energy Information Administration (EIA).

Share:

Comprehensive energy news coverage, updated nonstop

Annual subscription

8.25$/month*

*billed annually at 99$/year for the first year then 149,00$/year ​

Unlimited access • Archives included • Professional invoice

OTHER ACCESS OPTIONS

Monthly subscription

Unlimited access • Archives included

5.2$/month*
then 14.90$ per month thereafter

FREE ACCOUNT

3 articles offered per month

FREE

*Prices are excluding VAT, which may vary depending on your location or professional status

Since 2021: 35,000 articles • 150+ analyses per week

US commercial crude oil stocks recorded a rise of 3.9 million barrels during the week ending September 27, exceeding analysts’ expectations, who had anticipated a decline of 1.4 million barrels. This unexpected increase contrasts with the consensus established by Bloomberg and reflects a notable shift in the American energy sector.

This rise in inventories is primarily attributed to the slowdown in US refinery activity. Refining facilities operated at 87.6% of their capacity last week, compared to 90.9% the previous week, indicating the lowest utilization rate in five months. This deceleration is largely due to the oil companies entering their annual maintenance period, a common practice in October and February when demand is traditionally lower.

The reduction in refinery activity should theoretically lead to a decrease in refined product inventories. However, the stocks increased due to a drop in demand. The volumes of refined products delivered to the US market, an implicit indicator of demand, fell by 7% over a week. This decline was particularly pronounced for gasoline (-7%), distillates including diesel (-10%), and the propane and propylene category (-34%), largely destined for heavy industry.

Impact on the Oil Market

US gasoline stocks increased by 1.1 million barrels, while analysts had expected a more modest rise of 200,000 barrels. This increase exceeds expectations and could influence oil prices in the international market. In addition to the reduced activity of refineries, the rise in crude stocks can also be explained by a slight increase in imports (+2.7%), while exports remained relatively stable (-0.5%).

US crude oil production has reached its historic record level of 13.3 million barrels per day, compared to 13.2 million during the previous period. This recovery in production also contributes to the increase in stocks, despite a declining demand. The report from the US Energy Information Administration (EIA) had a significant impact on the market, which had been in a strong upward trend following the Iranian attack on Israel on Tuesday.

At 15:15 GMT, the price of West Texas Intermediate (WTI) for November delivery was up only 1.33%, reaching $70.76, after having risen by as much as 3.80% earlier in the day. This price volatility reflects the current uncertainties in the global oil market.

Outlook and Analysis

Matt Smith, an analyst at Kpler, explains that the refinery slowdown is an expected response to the maintenance season. “In October and February, refiners take advantage of a period of weaker demand to perform maintenance and repairs on their facilities,” he notes. This strategy helps maintain the operational efficiency of refineries while adjusting production according to seasonal demand fluctuations.

The decline in demand for refined products, especially gasoline and diesel, could also be linked to broader economic factors, such as slowdowns in certain industrial sectors or changes in consumer consumption habits. These dynamics will need to be closely monitored to anticipate future trends in the oil market.

Consequences for the US Economy

The increase in crude oil stocks and the drop in demand for refined products can have several repercussions on the US economy. On the one hand, higher stocks may put downward pressure on oil prices, which could benefit consumers by reducing the cost of gasoline and other derived products. On the other hand, a prolonged decline in demand could impact the profitability of refineries and potentially lead to adjustments in production operations.

The EIA report also highlights the importance of energy market stability for the overall economy. Effective stock management and quick adaptation of production and refining capacities are essential to respond to demand fluctuations and maintain market balance.

Reactions from Sector Players

Companies in the oil sector are closely monitoring these developments. Some may consider strategic adjustments to optimize their production and distribution based on new stock and demand data. Moreover, investments in refining infrastructure could be influenced by current trends, with a particular focus on operational efficiency and flexibility.

Additionally, national and international energy policies could be impacted by these market movements. Policymakers will need to evaluate the economic and environmental implications of these changes to develop strategies aimed at ensuring the resilience and sustainability of the energy sector.

Subsea7 has secured a subsea installation contract from LLOG for the Buckskin South project, scheduled for execution between 2026 and 2027, strengthening its position in the Gulf of Mexico and boosting its order book visibility.
Global crude oil production is expected to rise by 0.8 million barrels per day in 2026, with Brazil, Guyana and Argentina contributing 50% of the projected increase.
Woodbridge Ventures II Inc. signs definitive agreement with Greenflame Resources for a transformative merger, alongside a concurrent financing of up to $10mn.
Interceptions of ships linked to Venezuelan oil are increasing, pushing shipowners to suspend operations as PDVSA struggles to recover from a cyberattack that disrupted its logistical systems.
Harbour Energy acquires US offshore operator LLOG for $3.2bn, adding 271 million barrels in reserves and establishing a fifth operational hub in the Gulf of Mexico.
The agreement signed with Afreximbank marks a strategic shift for Heirs Energies, aiming to scale up its exploration and production operations on Nigeria's OML 17 oil block.
Oritsemeyiwa Eyesan’s appointment as head of Nigeria’s oil regulator marks a strategic shift as the country targets $10bn in upstream investment through regulatory reform and transparent licensing.
Baghdad states that all international companies operating in Kurdistan’s oil fields must transfer their production to state marketer SOMO, under the agreement signed with Erbil in September.
Chinese oil group CNOOC continues its expansion strategy with a new production start-up in the Pearl River Basin, marking its ninth offshore launch in 2025.
A train carrying over 1,200 tonnes of gasoline produced in Azerbaijan entered Armenia on December 19, marking the first commercial operation since recent conflicts, with concrete implications for regional transit.
Subsea 7 has secured a new extension of its frame agreement with Equinor for subsea inspection, maintenance and repair services through 2027, deploying the Seven Viking vessel on the Norwegian Continental Shelf.
Caracas says Iran has offered reinforced cooperation after the interception of two ships carrying Venezuelan crude, amid escalating tensions with the United States.
US authorities intercepted a second oil tanker carrying Venezuelan crude, escalating pressure on Caracas amid accusations of trafficking and tensions over sanctioned oil exports.
California Resources Corporation completed an all-stock asset transfer with Berry Corporation, strengthening its oil portfolio in California and adding strategic exposure in the Uinta Basin.
The Ugandan government aims to authorise its national oil company to borrow $2 billion from Vitol to fund strategic projects, combining investments in oil infrastructure with support for national logistics needs.
British company BP appoints Meg O'Neill as CEO to lead its strategic refocus on fossil fuels, following the abandonment of its climate ambitions and the early departure of Murray Auchincloss.
The Venezuelan national oil company has confirmed the continuity of its crude exports, as the United States enforces a maritime blockade targeting sanctioned vessels operating around the country.
The United States has implemented a full blockade on sanctioned tankers linked to Venezuela, escalating restrictions on the South American country's oil flows.
Deliveries of energy petroleum products fell by 4.5% in November, driven down by a sharp decline in diesel, while jet fuel continues its growth beyond pre-pandemic levels.
ReconAfrica is finalising preparations to test the Kavango West 1X well in Namibia, while expanding its portfolio in Angola and Gabon to strengthen its presence in sub-Saharan Africa.

All the latest energy news, all the time

Annual subscription

8.25$/month*

*billed annually at 99$/year for the first year then 149,00$/year ​

Unlimited access - Archives included - Pro invoice

Monthly subscription

Unlimited access • Archives included

5.2$/month*
then 14.90$ per month thereafter

*Prices shown are exclusive of VAT, which may vary according to your location or professional status.

Since 2021: 30,000 articles - +150 analyses/week.