Front-month oil futures slipped after U.S. stock figures surprised the market, undercutting prices even as a Saudi pipeline outage keeps supply risk elevated. Brent for November fell 1.02% to $107.64 a barrel, and U.S. West Texas Intermediate for October lost 1.29% to $104.46 per barrel. Data from the American Petroleum Institute showed crude, gasoline and distillate inventories all rose in the week ended Sept. 11, with crude stocks up 7.1 million barrels against analyst forecasts for about a 1.6 million-barrel draw.
The inventory surprise tightened downside pressure on front-month contracts because it increased the near-term U.S. supply buffer, tempering immediate concern about foreign outages. At the same time, traders have not abandoned geopolitical risk, after an attack on Saudi Arabia’s East-West pipeline forced the route to close over the weekend. U.S. Energy Secretary Chris Wright characterised the interruption as brief and expected it to last days, while industry voices warned repairs could take longer. Andy Lipow, president of Lipow Oil Associates, said judging from online images, repairs could take months.
Market participants said price direction will hinge on two competing forces: the size of the U.S. inventory cushion and whether the pipeline outage proves transient or prolonged. Joseph Dahrieh, managing director at Tickmill, warned that any further disruption to maritime flows or a prolonged pipeline outage could tighten the physical market and extend the advance in prices. Brokerage commentary echoed that security along Gulf export routes and the pace of Saudi repairs will be the primary drivers of the risk premium investors attach to crude.
The wider fiscal toll of the conflict also frames the backdrop for oil markets. A Congressional Budget Office estimate put U.S. Pentagon costs from the war with Iran at $38.1 billion through Aug. 1, and projected additional monthly costs of $2 billion to $3 billion for each further month of fighting. For now, the immediate consequence is lower front-month futures driven by the inventory surprise, but further movement will depend on the timeline for repairs and whether Gulf security deteriorates or stabilises.
