The interesting thing is that the stimulant being gellied NG is totally soluble in the product being recovered and therefore adds no down hole environmental risk and is totally recoverable. I've seen several articcles pertaining to this technique as well as GasFrac specifically. This would alleviate several issues of environmental concern regarding additives and disposal methods as well as recoverability. Only makes sense to me. Hope to see it in use by QEC soon. Foggy