Who's calling? <a href="http://piesebarca.ro/stmap_84coiw8.html?nizagara.calcium.monohydrate.cialis" rel="nofollow">cris pharma</a>  The YPF-Chevron venture will start with a $300 million pilot hydraulic fracturing project involving more than 100 wells in an area known as the "Enrique Mosconi Cluster," part of the Vaca Muerta (Dead Cow) deposit in Neuquen province, where YPF says 15 teams are already extracting more than 10,000 barrels a day.