As the private/working reserves are set to reach operational minimums in a month or less at the current pace, the SPR will have to increase draw rate or there will have to be further demand destruction. If it goes to 7mn a week, below the 9.9mn peak draw recorded, that's 4.5 months. If it has to exceed peak rates as private/working reserves running out bites more than the optimistic numbers I'm using, or if China returns closer to pre-war oil imports, it will run out in 2-3 months. Before it runs out, the maximum draw rate will likely start falling - there are multiple facilities and some are already at or close to operational minimums - which will force demand destruction even before operational minimums.

The operational minimums for commercial crude inventories are estimated at 300-380mn barrels, with current inventories at . Weekly draw rate this week was 7.2mn just for the commercial inventories, and levels were ~400mn barrels. So there's 20-100mn barrels remaining in the commercial inventory. Even moreso than the SPR, this is uneven, and maximum draw rates will decrease as individual storage reaches minimums.