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.

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.
Baker Hughes will supply advanced artificial lift systems to Kuwait Oil Company to enhance production through integrated digital technologies.
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.
Shell has reopened a divestment process for its 37.5% stake in Germany's PCK Schwedt refinery, reviving negotiations disrupted by the Russia-Ukraine conflict and Western sanctions.
Aliko Dangote accuses Nigeria’s oil regulator of threatening local refineries by enabling refined fuel imports, while calling for a corruption probe against its director.
Shell Offshore approves a strategic investment to extend the life of the Kaikias field through a waterflood operation, with first injection planned for 2028 from the Ursa platform.
Oil prices drop amid progress in Ukraine talks and expectations of oversupply, pushing West Texas Intermediate below $55 for the first time in nearly five years.
The US energy group plans to allocate $1.3bn to growth and $1.1bn to asset maintenance, with a specific focus on natural gas liquids and refining projects.
Venezuelan state oil group PDVSA claims it was targeted by a cyberattack attributed to foreign interests, with no impact on main operations, amid rising tensions with the United States.
BUTEC has finalised the financing of a 50 MW emergency power project in Burkina Faso, structured under a BOOT contract and backed by Banque Centrale Populaire Group.
BW Energy has signed a long-term lease agreement with Minsheng Financial Leasing for its Maromba B platform, covering $274mn of the project’s CAPEX, with no payments due before first oil.
Shell will restart offshore exploration on Namibia’s PEL 39 block in April 2026 with a five-well drilling programme targeting previously discovered zones, despite a recent $400mn impairment.
Iranian authorities intercepted a vessel suspected of fuel smuggling off the coast of the Gulf of Oman, with 18 South Asian crew members on board, according to official sources.
Harbour Energy will acquire Waldorf Energy Partners’ North Sea assets for $170mn, increasing its stakes in the Catcher and Kraken fields, while Capricorn Energy settles part of its claims.
The Big Beautiful Gulf 1 sale attracted more than $300mn in investments, with a focused strategy led by BP, Chevron and Woodside on high-yield blocks.
The United States intercepted an oil tanker loaded with Venezuelan crude and imposed new sanctions on maritime entities, increasing pressure on Nicolas Maduro’s regime and its commercial networks in the Caribbean.

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.