"The most likely estimates of recoverable gas in the Moroak and Bessie Creek Sandstones are calculated to be 11.2 and 17.5 trillion cubic feet (Tcf) respectively. These estimates are based on a well spacing of 160 acres and 10% recovery from a calculated most likely, in-place gas resource of 119 Tcf in the Moroak Sandstone and 174.9 Tcf in the Bessie Creek Sandstone. "

To appreciate the sheer size of the Beetaloo Basin, you have to look at this cross section of its geology. The Beetaloo Basin stretches 200 km North to South.