Posting again, forgot to add something. My family and I own mineral rights in Eagle Ford near Cotulla. There are 4 units and 4 wells which are producing as expected by the oil company. Carizzo is the operator. I don't understand what a unit is. Can someone explain? Also what is the likelihood that they will drill more wells in these four units? I've been told there is room for 12 more wells. Is anyone familiar with Carizzo and how they determine to drill more wells in existing units?