A worker checks the valves at Al-Sheiba oil refinery in the southern Iraq city of Basra, January 26, 2016. REUTERS/Essam Al-Sudani/File Photo Global oil output plunged in January as OPEC and non-OPEC producers curbed supply to accelerate a market rebalancing following one of the largest oil gluts in a generation, the International Energy Agency said on Friday. Oil supplies fell by around 1.5 million barrels per day last month, including by 1 million bpd for OPEC, leading to record initial compliance of 90 percent with a six-month output-cut deal reached in December by big producers to boost prices. “Some producers, notably Saudi Arabia, (are) appearing to cut by more than required. This first cut is certainly one of the deepest in the history of OPEC output cut initiatives,” the IEA, which advises industrial nations on energy policy, said. The Paris-based IEA said if the January level of compliance were […]