The American Petroleum Institute (API) estimated that crude oil inventories in the United States rose by 6.556 million barrels in the week ending March 13—a surprise build of significant magnitude. In the week prior, US crude oil inventories shed 1.7 million barrels. Analysts had expected a draw of 600,000 barrels in the current reporting period. Inventories in the US Strategic Petroleum Reserve (SPR) have stayed at 415.4 million barrels for multiple weeks in a row as of the week ending March 13. This is 310.1 million barrels shy of maximum…