An unconventional log analysis test was done on 23 wells in the Milk River Formation of northern Montana, with the entire Milk River interval treated as a single zone. The Milk River is a laminated shaly sand, and is not amenable to conventional log analysis because of the way that logging tools average laminated rock properties. This log analysis model is designed to calculate average values for shale volume, effective porosity, water saturation, and permeability for specific log intervals. The results of this analysis indicate which wells and which zones require further evaluation or testing to determine the feasibility of economic production.