Joel, from prior posts I thought your interest was in T141N R104W. The well you noted above is in another township; T142N R103W.
The "TFH" designation indicates it will be drilled Horizonatally (the "H") into the Three Forks formation (the "TF"). Often you'll also see a well designated as a "MBH", which would be a horizontal well into the Middle Bakken formation.
As to spacing, it is possible someone can have existing spacing for one formation while a separate spacing could be done for another formation. As in there can be existing "Madison" spacing then later a spacing unit is created under the same property for the "Bakken" formation.
Joel, I have a 4 member family with minerals too...How have you guys decided to manage them? LLC or FLP or Trust or combination or....something I didn't mention?