Exxon slashed its oil reserves by almost a third in what is the most radical reserve revision in the company’s modern history. The supermajor reported reserves totaling 15.3 billion barrels as of the end of 2020 in a regulatory filing, cited by Bloomberg. This compared with 22.44 billion barrels a year earlier. The biggest chunk of “deleted” assets came from Canadian oil sands: Exxon removed almost all of its oil sands holdings from its books as of the end of last year. This, however, does not mean they are gone forever. “Among the factors that could result in portions of these amounts being recognized again as proved reserves at some point in the future are a recovery in the SEC price basis, cost reductions, operating efficiencies, and increases in planned capital spending,” Exxon said in its filing. Exxon, which earlier this year reported its first annual loss in four […]