OSLO, Feb 18 (Reuters) - Oil firm Statoil STL.OL has found water in an oil and gas prospect drilled off Norway, partner Petrolia PDR.OL said on Tuesday. The prospect, called Tastaveden, lies in production license PL 628 in the Noth Sea. Statoil has a 50 percent stake in the license and is the operator, Spain's Repsol REP.MC has a 20 percent stake and Norwegian state-holding firm Petoro has 20 percent. Petrolia holds the remaining 10 percent. (Reporting by Gwladys Fouche, editing by Terje Solsvik) ((gwladys.fouche@thomsonreuters.com)(+47 23 31 65 94)(Reuters Messaging: gwladys.fouche.reuters.com@reuters.net)) Keywords: STATOIL EXPLORATION/NORWAY