QatarEnergy was seen cutting its June OSP differentials by $6.55-$7/b month over month on May 18, while buying interest continued to be observed for Abu Dhabi crude. The June OSP differential for Qatar Land was set at plus $11/b against the average of Dubai crude assessments in the month of loading, down from plus $18/b for May, according to a pricing notice on the company’s website. The June OSP differential for Qatar Marine was set at plus $10.50/b against Dubai, down from plus $17.05/b for May, according to the notice. Trafigura bid for 500,000 barrels of Upper Zakum crude for loading over July 1-28 during the May 18 Singapore Market on Close assessment process, with the bid left standing at a $5.20/b discount to the grade’s July official selling price,...