ARSD 74:12:04:03. Commingling of oil from separate pools prohibited underground

Unless approved by the secretary using the notice of recommendation procedure in chapter 74:12:09, each pool must be produced as a single common reservoir without commingling of fluids from different pools in the well bore. After fluids from different pools have been brought to the surface, they may be commingled if the amount of production from each pool is determined by a method approved by the secretary.