FILE PHOTO: Pipelines are seen at the industrial zone at the oil port of Brega, Libya, January 12, 2017. OPEC’s battle against an oil glut is under threat as unsold crude from members Nigeria and Libya, which are exempt from a global production-cutting deal, is swamping the Atlantic Basin. Nigeria has more than 60 million barrels of unsold crude, traders of its oil said, surpassing the level reached when global oversupply peaked two years ago. More export plans are a week away, likely bringing more than 50 million extra barrels. Libya, meanwhile, is pouring nearly triple the amount of crude into global markets compared with last year. Few expected the two nations’ output to rebound so quickly, and it could scupper OPEC’s plans to lift oil prices out of a nearly three-year-long slump. The 14-nation Organization of the Petroleum Exporting Countries two weeks ago extended a deal struck in […]