State-controlled oil company YPF said it discovered an oil field in Rio Negro, a province in southern Argentina.

The find was made in the Los Caldenes block, located 30 kilometers (about 19 miles) north of the town of Cinco Saltos, the company said in a statement.

The field contains an estimated 15 million barrels of petroleum, YPF said.

The discovery was made at the Los Caldenes x-2 well, which was drilled to a depth of 31.54 meters (about 102 feet) below the well head, YPF said.

The Los Caldenes block had last been explored in 1999, YPF said.

Argentina's government took control of YPF in May 2012, when Congress approved the expropriation of a 51 percent stake in the company from Spain's Repsol.

Repsol retains a 12 percent stake in YPF, Argentina's largest oil producer. EFE