Banyumas Basin is a basin that has signs of the presence hydrocarbons, including oil and gasseep on surface, which indicates active petroleum systems in subsurface. A lot gas seeps werefound Basin, Cipari Besuki, while were found Mount Wetan,Karanglewas, also Cipari. Exploration drilling wells have been carried out, such as Jati-1 Well, KarangNangka-1, Karang Gedang-1, Tjipari-1, Wetan-1, but t...