Strategic Petroleum Reserve (United States)
Strategic Petroleum Reserve (United States)
Since 2015, Congress has mandated sales of oil from the reserve to fund federal spending. The U.S. Department of Energy has run at least seven sales since 2017, selling 132 million barrels, or about 18.2% of what had been in the reserve.
Strategic Petroleum Reserve (United States)
According to legislation already in place, the amount of oil in the reserve could fall to 238 million barrels by 2028. This will be a 67% reduction to the oil in the reservoir since 2010.
Facilities
Individual caverns within a site can be up to 1,000 m (3,300 ft) below the surface. Average dimensions are 60 m (200 ft) wide and 600 m (2,000 ft) deep; capacity ranges from 6 to 37 million barrels (950,000 to 5,880,000 m3). Almost $4 billion was spent on the facilities. The decision to store in caverns was made to reduce costs. The Department of Energy claims that it is approximately ten times more cost effective to store oil below the surface, with the added advantages of no leaks and a constant natural churn of the oil due to a temperature gradient in the caverns. The caverns were created by drilling down and then dissolving the salt with water.
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