Chevron and YPF sign $1.5 billion shale oil deal

Masked demonstrators holding sticks march toward Argentina's state-controlled YPF oil company headquarters to protest a deal between YPF and the U.S. oil company Chevron in Buenos Aires, Argentina, Tuesday, July 16, 2013. YPF, which was expropriated in 2012 from Spain's Repsol, is finalizing the details of an agreement with Chevron which would invest in the first pilot for massive exploration for unconventional oil and gas in the Vaca Muerta region. (AP Photo/Victor R. Caivano)BUENOS AIRES, Argentina (AP) — Argentina's state-controlled YPF oil company has persuaded Chevron Corp. to sign a long-sought deal to invest $1.24 billion in developing the South American country's shale oil deposits.