Geopolitical Cousins The Supply Hole
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Apr 24, 2026 
Rory Johnston, oil analyst and host of Oil Ground Up, explains the 13 million barrels-per-day supply hole from a Strait of Hormuz closure. He covers reroutes and pipeline limits, strategic reserve math, timelines for when shortages bite, and price scenarios if disruptions persist.
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Hormuz Created A Billion Barrel Time Debt
- Closing the Strait of Hormuz created a ~13 million barrels/day effective supply hole after reroutes and partial flows were counted.
- Rory counts a ~1 billion barrel cumulative unproduced shortfall if closure lasts into May because restart lags tankers and facilities.
Commercial Inventories Aren't A Free Barrel Bank
- Global commercial inventories are ~2.5–3 billion barrels, but working usable buffer is closer to 1–2 billion because flows must be maintained.
- A 1 billion barrel hit would materially draw commercial stocks and push prices sharply unless SPR and releases cover the gap.
Model SPR Releases As Actual Supply Moves
- Expect additional strategic releases to be treated as supply injections, not mere inventory draws, and model them explicitly when forecasting tightness.
- Rory expects the IEA/partners could repeat ~400mb releases to blunt the immediate deficit.