The development stages:In production - under development/2016-03.Chachahuén, located in Mendoza province, is owned by Argentine oil companies YPF (70%), Ketsal-Kilwer, owned by Andes Energia (20%), and Energía Mendocina (10%). In 2012, a 40Mboe discovery at the block was reported. This is the youngest conventional field in Argentina and the only one with growing output. Current total production is 3,500b/d with 70 producing wells. Production is expected to reach 5,000 b/d.