HE1 4.7% helium discovery at Itumbula :-), page-12

I believe that this will be a hybrid situation, similar to NHE..
with more focus on the unconventional saturated water with helium gas in it..
it seems as though that was what HE1 was referring to as well, except HE1 has had some free gas which was depressurized from the fluids, once it got into the well;
"The Company has identified that the frequency of helium increases with depth and is preferentially carried in hot fluids out of the Basement and along fault conduits. As the helium rises through the well bore, the pressure decreases, and it is thought that the helium then comes out of solution and increases in concentration."..