Repsol-YPF SA (REP) hasn't taken a decision on whether to raise its stake in oil company West Siberian Resources Ltd. (WSIB-SDB.SK), a press official for the Spanish oil firm said Tuesday.
"We're open to examine all investment opportunities," the official said.
Spain's Cinco Dias newspaper had quoted West Siberian's Chief Executive Maxim Barski as saying that Repsol was mulling to raise its stake in his company to 10% from 3%.
Repsol's stake in the company had been diluted to 3% from 10% after West Siberian earlier this year merged with Russian refiner and distributor Alliance Oil.
West Siberian, according to Cinco Dias, has a daily oil output of 51,000 barrels.