Can Global Markets Withstand a Ten Million Barrel Drop in Daily Oil Production?

Global energy prices have risen sharply after a reported physical disruption to Middle East supply routes, with Brent crude climbing to nearly $120 per barrel .

The account attributes the shock to a U.S.-Israeli conflict with Iran and says the impact has extended beyond oil into natural gas, as key liquefied natural gas (LNG) shipments were halted.

What changed in March 2026

The reported trigger, beginning in March 2026 , was not a new sanctions package but a disruption to physical supply.

That disruption is described as including the closure of the Strait of Hormuz and reported attacks on Iranian oil and gas facilities, creating constraints that cannot be solved simply by rerouting cargoes.

Hormuz chokepoint and the scale of lost flows

The Strait of Hormuz is a critical maritime corridor for energy exports, and the report says traffic through it has dropped sharply.

Oil volumes transiting the passage are described as falling from roughly 20 million barrels per day to minimal levels, forcing Gulf producers to cut output by at least 10 million barrels per day because barrels cannot reach buyers.

Natural gas spillover as LNG cargoes stop

The same chokepoint is also central to LNG trade, and the report estimates about 112 billion cubic meters of LNG—around 20% of global LNG trade—normally passes through Hormuz.

Those volumes are described as effectively cut off, while spare LNG production capacity is characterized as limited, reducing the ability to replace missing cargoes quickly.

Policy tools face delivery constraints

The International Energy Agency is reportedly weighing a release of 400 million barrels from strategic petroleum reserves.

However, the same account cautions that stock releases may not fully offset the shock when the main problem is moving crude through a closed corridor rather than a lack of oil in storage.

Limited alternatives and what remains uncertain

Alternative export routes are presented as only a partial workaround, with spare pipeline capacity estimated at 3.5 to 5.5 million barrels per day , below the reported scale of production cuts and lost seaborne flows.

The report expects oil and gas prices to stay high for an extended period, implying demand destruction and operational changes for energy-intensive industries, alongside higher fuel and power costs for households.

Key unknowns remain central to market pricing: how long the Strait stays closed, how much damage Iranian facilities sustained, and when shipments could normalize.

Because these details are not confirmed in the available account, importers’ inventory planning and policy decisions are likely to remain sensitive to any change in physical access to supply.