Exxon Mobil erased almost every drop of oil-sands crude from its books in a sweeping revision of worldwide reserves to depths never before seen in the company’s modern history.
Exxon counted the equivalent of 15.2 billion barrels of reserves as of Dec. 31, down from 22.44 billion a year earlier, according to a regulatory filing on Wednesday. The company’s reserves of the dense, heavy crude extracted from Western Canada’s sandy bogs dropped by 98%. Source World OIl