i like this28 Feb 2012 09:38
The Vaca Muerta formation is one of two principal source rocks in the Neuquén basin in Argentina. The formation is late Jurassic, early Cretaceous in age, covers an area of approximately 7.41 million acres (30,000 km²), varies in depth between 5,500 to 14,000 feet and in places is up to 1,400 feet thick. In published reports, the U.S. Energy Information Administration has estimated a risked, recoverable resource of 240 trillion cubic feet ("TCF") of shale gas from the Vaca Muerta formation in the Neuquén basin.
A Ryder Scott Report ("Report"), commissioned by Repsol, reveals 77% of the area, held by Repsol and its associates, to be oil and the balance a mixture of dry and wet gas. The report covered 8,071 km² (1,994,378 acres) and attributed 21,167 mmboe of prospective resources, 1,525 mmboe of contingent resources and 116 mmboe of 3P reserves. YPF has advised Andes that the Ryder Scott Report has attributed P90 prospective resource of 84.9 mmboe, P10 prospective resource of 221.3 mmboe and a mean of 147.7 mmboe prospective resources for 100% of the block which represents an equity net participation of 19.9 mmboe to Andes.