Libya, the holder of Africa’s biggest crude reserves, is ramping up output from its biggest oil field again after two years of internal conflict, the latest reminder of just how vulnerable OPEC’s quest to clear a global crude glut might be. The Sharara deposit in the Libya’s south west will ship almost 1.9 million barrels this month from its Zawiya port near Tripoli, according to a loading program obtained by Bloomberg. That compares with a pumping rate from the field of almost 9 million barrels a month as recently as late 2014, before internal conflict halted flows. So far Libya’s revival has done little to undermine a plan by the Organization of Petroleum Exporting Countries to prop up prices by restricting oil supply. The group said Nov. 30 it would curb almost 1.2 million barrels a day but that several nations — Libya among them — didn’t have to […]