WTI Crude Oil Posts 23 Percent July Gain as Iran Seizes Two Hormuz Tankers and Ukraine Hits Lukoil Volgograd

West Texas Intermediate crude oil settled at $84.67 per barrel on Friday's CME close, up 1.29 percent on the day. Brent crude settled at $87.93 per barrel on Friday's ICE close, up 1.21 percent. Both gains capped July's strongest monthly advance for each benchmark since March, with WTI rising 23.46 percent and Brent gaining 22.86 percent over the month.

Iran Seizes Two Tankers in Hormuz Under US Military Escort

Iran's Islamic Revolutionary Guard Corps struck two tankers transiting the Strait of Hormuz on July 31, according to Iran's state-run PressTV. The tankers attempted passage under US military escort before the IRGC attacked them. Four additional tankers turned back after the incident, further disrupting flows through the world's most critical oil chokepoint. The action came despite the June 18 memorandum of understanding between Washington and Tehran that had briefly restored Hormuz shipping traffic.

The Strait of Hormuz carries approximately 20 percent of global oil supply. Iran's renewed blockade campaign has repeatedly strained the June 18 accord. Oil prices rose more than 1 percent on the day as traders weighed the tanker attack alongside declining US crude inventories.

Ukraine Strikes Lukoil Volgograd Refinery

Ukrainian forces struck Lukoil PJSC's refinery in Volgograd on July 31, igniting a fire at the facility, according to Ukraine's General Staff and Bloomberg. The Lukoil-Volgogradneftepererabotka plant processes approximately 15 million metric tonnes of crude annually, ranking among Russia's largest downstream operations. Ukraine has intensified strikes on Russian refining infrastructure throughout 2026, driving crude processing rates to multiyear lows. Fuel rationing has been reported across Russian regions as a result.

July Marks Both Benchmarks' Strongest Month Since March

WTI's 23.46 percent July advance added $19.86 per barrel from the end of June, per Trading Economics settlement data. Brent's parallel gain of 22.86 percent brought the international benchmark to $87.93 by Friday's ICE close. Both benchmarks now trade well above the EIA's most recent official price forecast for the current period.

The EIA's July 7, 2026 Short-Term Energy Outlook projected Brent crude would average $74 per barrel through the third quarter of 2026. That forecast was issued after the June 18 US-Iran Hormuz accord briefly reopened shipping lanes. Brent closed July 31 at $87.93 per barrel. The resulting gap of $13.93 per barrel, or 18.8 percent above the EIA's Q3 reference price, arrived in the quarter's first month.

Alberta Producers Running $16 Per Barrel Above AER Forecast

Western Canadian Select is trading at approximately $72.57 per barrel, derived from Friday's WTI settlement of $84.67 minus the WCS-WTI differential of roughly $12.10 per barrel. The differential figure is consistent with BOE Report data from June 2026. Published in the AER's ST98 report, the 2026 base-case outlook assumed WCS would average $56.00 per barrel for the full year. Alberta oil sands producers are generating approximately $16.57 per barrel above that reference forecast at current prices.

For every 100,000 barrels per day of Alberta crude production at this premium over the AER's $56.00 forecast, operators capture roughly $605 million in additional annual revenue above the reference case. Canada's largest integrated producer, Suncor Energy, whose Fort Hills, Base Plant, and Syncrude stake anchor Alberta oil sands output, sits among the primary beneficiaries. Canadian producers sell crude in US dollars but report in Canadian dollars, so a weaker loonie against the US dollar amplifies those gains further.

Oil Authority previously reported a 7.8 percent WCS surge when the Saudi Aramco Jazan refinery went offline following a Houthi strike (WCS Jumps 7.8 Percent as Saudi Aramco Jazan Refinery Goes Offline After Houthi Strike). That event was a demand-side shock: a major heavy-crude customer went dark, reducing appetite for WCS. Friday's Hormuz tanker seizure operates through a different mechanism. It is a supply-side flow disruption affecting all crude grades transiting the strait, not a single refinery pulling back demand for heavy barrels.

US Drilling Response Stays Measured

US energy firms added rigs for the sixth time in seven weeks in the Baker Hughes count for the week ending July 31, bringing the US total to 588 active rigs. The Permian Basin added two rigs to reach 260, Eagle Ford gained two to 49, and Marcellus added one to 25. Granite Wash and Utica each shed one rig, to 20 and 11 respectively. Canadian activity rose by 15 rigs to 219 total, up 48 year-over-year, per Baker Hughes data.

At $84.67 WTI, the current 588-rig US count reflects sustained capital discipline from publicly traded producers. When WTI last traded in this price range during 2014, the total US rig count ran above 1,800. Shareholder return commitments and substantially higher per-rig productivity in modern shale plays account for most of that difference. EIA's July 7 Short-Term Energy Outlook projected US crude oil production at 13.8 million barrels per day for 2026, with Permian growth offsetting declines elsewhere.