WorldOil PESA Argentina chapter debuts in Buenos Aires United States Ambassador to Argentina Edward Prado welcomed PESA to his residence in Buenos Aires to kick off the creation of the PESA Latin America Regional District, Argentina Chapter on Tuesday, September 24. Drillmec’s Striker-800 cluster drilling rig departs for Argentina Drillmec announced their Striker-800 cluster drilling rig is headed to Argentina to explore the Vaca Muerta shale play.