Peer comparison....
I may be wrong , please correct me if I am.. but I believe the below tenament is what got things going initially back in 2008/2009 for ICN (Icon Energy)
ATP 626P: The tenement targets coal bed methane gas reserves in Surat Basin QLD.
A gas in place was estimated to be 2-7 TCF.
This exert is from TNP:
Estimated that 2-7 Tcf of gas is in place in the greater JV area (2,700 km2)