Have a look at one of my previous posts where I did a valuation on STU. 843636 (number of my post)
Ofcourse things have changed a little now with more oil found in the meantime and increased prospects waiting to be drilled.
Oil for Stuart as well Cooper can carry an in ground value of A$30 per barrel due to the fact that they are low risk and easily and quickly brought into production.
Hope this helps
jojo
STU Price at posting:
0.0¢ Sentiment: Buy Disclosure: Not Held