Exploration in Robe Trough, Otway Basin

Petroleum exploration of the Robe Trough (RT) region of South Australia (Figure 1) has been conducted sporadically and with no commercial success since the first well, Robe 1, was drilled in 1915. Until recently, the onshore area has been regarded as having little prospectivity with exploration concentrated on the edge of the trough. However, as a consequence of recent efforts, the onshore RT is viewed with significantly higher prospectivity, particularly the central region, and underwent a key test with the drilling of the Nunga Mia 1 well in late 1996.