Singapore- Qatar Petroleum has set the September official selling prices (OSP) for its Qatar Marine crude at $0.60 a barrel above the average of Platts Oman and Dubai quotes, down 75 cents a barrel from the previous month, a pricing document seen by Reuters showed on Tuesday.

The September OSP for Qatar Land crude was set at $0.50 a barrel above the Platts Oman/Dubai average, down 80 cents a barrel from the previous month, the document showed.

(Reporting by Shu Zhang in Singapore, writing by Dahlia Nehme in Dubai; editing by Jason Neely) ((Hadeel.AlSayegh@thomsonreuters.com; +971566883310;))