Leading US oil corporations have issued warnings that an extended closure of the Strait of Hormuz could push global crude markets toward a critical price inflection point. Executives from ExxonMobil, Chevron, and ConocoPhillips indicated this week that each additional day the vital waterway remains shut accelerates the depletion of commercial inventories, strategic reserves, and crude stored on tankers prior to the US-Israeli conflict with Iran. ExxonMobil CEO Darren Woods stated during a Friday analyst call that these supplies helped "cushion" oil price pressures in March and April but are unsustainable in the long term.

"Most people recognize that when you look at the unprecedented nature of this shock to global oil and gas supply, the market hasn't yet fully reflected the full impact," Woods commented. "If the strait remains closed, the subsequent effects will become more apparent."

The closure of the Strait of Hormuz by Iran has long been considered a nightmare scenario for energy markets, as the passage typically handles approximately one-fifth of the world's daily oil and liquefied natural gas shipments. Although oil prices have risen over 50% since Iran effectively shut the route two months ago, current levels just above $100 per barrel remain significantly below historical peaks.

"When commercial stocks reach minimum operating levels, this source of supply will no longer be available," Woods explained. "We anticipate that if this occurs and the strait stays closed, market prices will continue to climb."

On Friday, West Texas Intermediate crude fell approximately 4%, settling around $102 per barrel, as Iran signaled willingness to continue diplomatic efforts with the United States regarding the nine-week-old conflict.

ConocoPhillips Chief Financial Officer Andy O'Brien noted during a Thursday analyst call that the crude market has been in a "cushioning period" since late February, as tankers loaded before the conflict began took weeks to complete their voyages and deliver cargoes.

"Now, those shipments have reached their destinations," he stated. "The impact of reduced supply will begin to become more pronounced."

The shock has thus far been most evident in Asia, where refineries are reducing operational rates and some countries are advising citizens to drive less and work from home.

"Moving into June and July, some import-dependent nations may begin facing significant shortages," O'Brien warned.

Analysts including Natasha Kaneva at JPMorgan wrote in a report this week that if the strait remains closed, commercial inventories in developed nations could reach operational stress levels by early June and hit minimum levels by September. She indicated that further demand destruction would then be necessary to maintain system balance.

"As these cushions are gradually consumed, their capacity to absorb shocks diminishes," Chevron CEO Mike Wirth remarked in an interview with CNBC. "Consequently, price signals will intensify."