The Hormuz Inventory Runway
A softer Brent price has not refilled the world’s tanks. This is a reasoning tool, not a forecast: it asks how long the accessible commercial cushion lasts under a sustained draw — and how much fear, once shortage becomes visible, compresses that runway. Drag the dial and watch the floor-breach date move under your own hand.
Months, not weeks — and not years
The reassuring headline — ~8.2 billion barrels of global observed stock — is misleading: roughly half is OECD inventory, much of it strategic or obligation-bound; a quarter is oil on water; ~15% is opaque Chinese stock. Accessible ≪ headline. But the accessible buffer does not drain at the 6–8.5 mb/d total draw either — that is met largely from the non-accessible buckets. It drains at the OECD-paced ~1.6 mb/d implied by the EIA’s own Jan→Dec path, which puts the runway in months, converging on the EIA’s own projection of a two-decade stock low by year-end. The dial below shows the one thing that model can’t source: how precautionary buying pulls that date forward.
Hoarding-feedback runway
Buffer = OECD commercial stock above the (estimated) systemic operating floor. Structural draw is the OECD-paced ~1.6 mb/d; precautionary demand ramps with depletion once a realisation trigger fires. The linear baseline (draw holds) breaches around mid-2027; fear compresses it.
Read this honestly
The draw rates and inventory levels are EIA/IEA-sourced; the operating-floor level and the panic parameters are OilWatch estimates, flagged as such. This is a behavioural scenario model, not a price forecast — and the runway is a range (toward the EIA’s two-decade low by ~year-end; genuine operating stress into 2027), not a single breach date.
The full argument: The Runway, Not the Price → · Methodology