SINGAPORE -

* Qatar Petroleum has sold three al-Shaheen crude cargoes loading in March at the highest premiums in three months, trade sources said on Friday

* The producer sold the cargoes at an average premium of 55 cents a barrel to Dubai quotes, up from an average of 40 cents in the previous month, they said

* QP subsequently set the term price at a premium of 60 cents a barrel, the sources said

* Petro-Diamond, Unipec and JX Nippon bought the cargoes, they said

* The cargoes will load on March 1-2, 25-26, 27-29

* Prior to the tender, al-Shaheen crude was sold at premiums of 50 cents-60 cents a barrel in the spot market, the sources said

(Reporting by Florence Tan, Editing by Sherry Jacob-Phillips) ((Florence.Tan@thomsonreuters.com; +65 6870 3497; Reuters Messaging: florence.tan.thomsonreuters.com@reuters.net))