This major I assume is Senex, here are the highlights regarding Cooper of their 2018 financial year outlook which has just started:
Matured the regional petroleum system model, resulting in a western flank focused capital program for FY18 • Birkhead oil discovery on the western flank in early FY18 Production growth required to materially reduce unit operating costs Continued focus on low operating costs and maximising production from base oil portfolio • Returns focused capital program prioritising high value western flank targets Birkhead oil discovery made in July 2017: Marauder-1 exploration well Focusing on high value oil opportunities on the western flank of the Cooper Basin • All other areas in the Cooper Basin will be a second order priority while we focus on delivering free cash flow