DOHA - Qatar Petroleum (QP) signed on Sunday an agreement with Italy's ENI to buy a stake in three offshore oilfields in Mexico, QP's chief executive said.

Under the deal, QP will acquire a 35 percent stake in the Mexican oilfields, where production is expected to start by mid 2019 and ramp up to 90,000 barrels per day by 2021, QP CEO Saad al-Kaabi said at a news conference in Doha.

(Reporting by Rania El Gamal and Eric Knecht; Editing by Mark Potter) ((rania.elgamal@thomsonreuters.com; +971 562 160 434; Reuters Messaging: rania.elgamal.reuters.com@reuters.net ; Twitter: https://twitter.com/Rania_ElGamal))