Oil Prices Plunge Over $3 on Inventory Build, Market Strips War Premium

Oil prices fell sharply Tuesday afternoon, with West Texas Intermediate (WTI) crude trading down 4.25 percent to $79.10 per barrel, according to live market data. Brent crude dropped nearly 5 percent to $83.95. The Bakken crude differential widened to a discount of $3.42 versus WTI.

The sell-off accelerated as the market rapidly stripped out the geopolitical risk premium related to the Iran war, according to Petros Pantzari, Chief Dealer at Monaxa, as reported by Rigzone. Despite ongoing Middle East tensions that have sunk tanker crossings in the Strait of Hormuz to their lowest level since May, prices are retreating on fundamental supply and demand signals.

A key pressure point is rising U.S. inventories. The American Petroleum Institute (API) estimated that U.S. crude oil inventories increased by 3.296 million barrels in the week ending July 24, according to OilPrice.com. This marks the second consecutive weekly build. While inventories at the Cushing, Okla., delivery hub fell slightly, nationwide commercial stocks are down only 3 million barrels for the year, kept in check by significant draws from the Strategic Petroleum Reserve (SPR).

The SPR fell by another 3.7 million barrels last week to 307.7 million barrels—the lowest level in over 43 years and approaching the operational minimum of 250-300 million barrels. U.S. oil production for the week ending July 17 was reported at 13.798 million barrels per day, down slightly week-over-week but up 525,000 bpd from a year ago.

Further weighing on the market is the expected trajectory of OPEC+ policy. The producer group is preparing to approve one final production increase for September and then pause its monthly quota hikes through the end of the year, according to a Reuters-sourced report published by OilPrice.com. Saudi Arabia, Russia, and other members are expected to raise their combined September target by about 188,000 barrels per day at their August 2 meeting.

This planned pause would leave approximately 2 million barrels per day of group-wide cuts in place through 2026. The group's next challenge will be setting 2027 production baselines, a contentious process complicated by the Iran war's impact on member exports and capacity.

For Bakken operators, the price drop directly impacts cash flow and drilling economics. With WTI now below $80 and Bakken crude trading at a roughly $3.42 discount, wellhead realizations are under pressure. The inventory build suggests U.S. supply, including from shale plays like the Bakken, is meeting demand despite global disruptions. The potential OPEC+ pause indicates the cartel sees a balanced or softening market ahead, removing a potential bullish catalyst. Operators will be closely watching for the U.S. Energy Information Administration's official inventory data Wednesday to confirm the API's reported build.