Royal Dutch Shell RDS.A -0.20 % PLC on Wednesday said its exports of Nigerian crude oil had been significantly disrupted, adding to a slew of stoppages that have knocked out around 500,000 barrels a day of oil output in the West African country. It is the latest hit to oil exports across the world, leading to mounting concerns about the global crude supply. A series of output interruptions from Canada to Libya have illustrated how quickly the global glut of oil could be cleared out after nearly two years of weighing on prices. “The growing level of supply disruptions should tighten near-term balances,” Mr. Kleinman wrote in a note. Global oil production still outpaces demand by more than 1 million barrels on any given day, weighing down crude prices that fell to their […]