Output from the cartel was boosted by near-record supplies from Iraq and Saudi Arabia, a Reuters survey showed.
Supply rose to 31.04m barrels per day (bpd) from 30.97m bpd in March.
This is the biggest total since 31.06m in November 2012.
“We are in an oversupplied market, and this oversupply is unlikely to disappear any time soon,” said Eugen Weinberg, analyst at Commerzbank in Frankfurt.
Nigerian
