International oil companies are wasting no time testing how serious Washington and Caracas really are about reviving Venezuela’s oil industry. And their opening demand is refreshingly blunt: if we’re going to invest, we need to control our barrels. According to Reuters sources, international oil executives and lawyers are pushing for fast, targeted changes to Venezuela’s hydrocarbons law that would allow foreign partners to export the oil they produce directly, rather than handing it over to state oil company PDVSA to sell on…