The development stages:Exploration drilling/2016-11.The Astillero exploration area is expected to hold 1.1Tf3 of prospective gas reserves, according to YPFB. The field's joint program will be carried out by YPFB and Petrobras Bolivia in the Astillero prospect and foresees two exploratory wells and three development wells. Geological and geophysical studies have been carried out in the area. YPFB expects Astillero to yield 5.6Mm3/d at its maximum production plateau and initial production is set for 2022.