Global Oil Demand to Increase This Year and in 201 The Organization of the Petroleum Exporting Countries (OPEC) in their monthly report forecasted oil demand to rise in 2012 and the next. In their monthly report OPEC forecasted global oil demand to increase by 900,000 barrels a day in 2012 and another 800,000 in 2013. During August OPEC produced an average of 254,000 barrels more a day than in July for a total of 31.41 million barrels.