The development stages:Appraisal drilling/2013-11.Lindero Atravesado targets tight gas resources in the Lajas formation and shale oil from the Vaca Muerta formation. Operator Pan American Energy holds a 62.5% stake in Lindero Atravesado, while Argentine national oil company YPF controls 37.0.05. The companies plan to drill 46 wells in a period of four years investing a total of US$590mn. once the pilot program is finished, they will then decide whether to implement a plan to fully develop the block. As of December 31, 2013, the Lindero Atravesado area contained proven reserves of 1.6Mb of oil and 86.4Bf3 (2.40Bm3) of gas.