Chart -TPD, page-294

Yes it could run into the same predicament as NWE but fortunately it's only a minor setback for NWE.
As for potential upside it's anyone's guess but the Mongolia prospects are said to be multi-tcf and we already know that the Perth basin is brimming with gas so if I were to have a shot in the dark I'd say on great results i.e. 1tcf+ we could easily see 3c and hypothetically 2+ tcf in Mongolia could have the SP somewhere well north of 10c
That's in an ideal scenario