The world’s largest oil producers appealed to U.S. shale producers to join their efforts to hold global prices at their current level at a major energy conference Monday, as the boom in shale is continuing to undermine OPEC’s production curbs.  OPEC Secretary General Mohammed Barkindo said Monday at the CERAWeek conference in Houston that there is a “common understanding” between oil-producing nations and U.S. shale producers that “we all belong to this industry,” even as U.S. exports have eroded OPEC’s market share over the last year. This year’s CERAWeek conference continues outreach between the Organization of the Petroleum Exporting Countries and shale producers. Members of OPEC will meet with shale producers on Monday evening at a dinner for the second year in a row, though Barkindo […]