When Big Oil began preparing last year to challenge the decades-old rules against exporting U.S. crude, the debate seemed fanciful. Then Russia took over Crimea and the idea of using American energy — oil as well as natural gas — to reshape global affairs became a Washington pet project. Here’s how the battle lines are drawn: Oil producers want to chase higher prices overseas. Refiners want to keep cheaper domestic supplies. Politicians want to balance those interests with concerns that gasoline prices would rise. Everyone invokes the goal of energy independence. Putting the posturing aside, it’s useful to imagine what actually happens to supply, demand and prices in an oil market without the export restrictions that date to the 1970s Arab oil embargo. That’s what JBC Energy GmbH, a Vienna-based research company, offered in a report this week. The upshot? Producers win, refiners lose, global prices converge — and […]