Abbreviated SPR, it's the emergency store of oil created by the U.S. government in 1977
Highest Inventory - The SPR was filled to its 727 million barrel design capacity 
on... [DOC] [TLE] Available Oil Can Provide Significant Benefits, but Many Factors ... [PAR] Aug 24, 2006 ... affect the extent to which the SPR can protect the U.S. economy .... States 
imported 65 percent of its crude oil supply, or approximately ...