The IEA (which, as its name suggests, covers more than Europe) seems to say the reserve, though made available, wasn't fully used:
9/7/2005 Paris --- IEA Executive Director Claude Mandil announced today the initial composition of the IEA's collective action to make available crude oil and products in response to supply disruptions caused by Hurricane Katrina. In an act of solidarity, all 26 IEA member countries, in cooperation with the EU, agreed on 2nd September to offer an additional 60 million barrels to the market over 30 days. The breakdown of their contribution is now available:
...
* North America is offering the biggest contribution of total response (52%), followed by Europe (30%) and the Pacific region (18%), based on agreed shares of consumption.
* Countries have committed to draw stocks at the rate of nearly 2 million barrels per day, of which 1,289 kb/d is crude oil and 683 kb/d is product stock consisting of 369 kb/d, motor gasoline, 276 kb/d, middle distillates and 38 kb/d fuel oil.
* Outside the U.S., the largest stockdraw contribution will be
545 kb/d of finished products from Europe, consisting of 317 kb/d, motor gasoline, 190 kb/d, middle distillates and 38 kb/d, fuel oil.
IEA Press Release, 7th SeptAnd the
attached PDF shows the North American figure included 1 million barrels a day of US crude oil reserves.
10/20/2005 Paris --- The IEA Governing Board today reviewed its initial collective response action of 2 September 2005 to disrupted oil supplies in the wake of Hurricane Katrina and
agreed to allow volumes of crude oil and oil products from the IEA’s original offer of 60 million barrels, not yet taken up, to remain available to the market. The IEA will continue to assess the market and the Governing Board reiterated its preparedness to take additional co-ordinated action, if necessary, to address possible future shortages in products and crude oil, caused by the cumulative damage left by Hurricanes Katrina and Rita, or indeed, other unanticipated supply losses. Flexibility will be used in replenishing IEA emergency oil stocks through 2006, taking into account the seasonality of demand and the upcoming heating season in the northern hemisphere.
IEA Press Release 20th OctSo the 60 million barrels hadn't all been used by 20th October - ie it had been used at less than the 2 million barrels per day anticipated, and half of it was US reserves. Maybe the 60 million was finally used between 20th October and the week before Kunstler wrote his piece.