Petrila is a town in the Jiu Valley, Hunedoara County, Transylvania, Romania. It is located near the confluence of the rivers Jiul de Est, T…Petrila is a town in the Jiu Valley, Hunedoara County, Transylvania, Romania. It is located near the confluence of the rivers Jiul de Est, Taia, and Jieț. The town administers four villages: Cimpa, Jieț, Răscoala, and Tirici.