This post presents a closer examination of actual data on Light Tight Oil (LTO) extraction, developments in water cut and Gas Oil Ratio (GOR) for some pools and individual wells in the Middle Bakken and Three Forks formations in North Dakota. LTO extraction’s primary drive mechanism is (differential) pressure and there are some noticeable trends for LTO extraction from Bakken: LTO productivity (measured as average totals by vintage) in 2014 have increased, most notably from the Middle Bakken formation which has better well productivity than Three Forks. There are differences to LTO productivity developments amongst the pools. Water cut; generally increases as the wells ages. An indicator for depletion. Water cut; generally increases for newer wells. This suggests that the areas with the highest oil saturation has been developed. Gas Oil Ratio (GOR, produced and expressed […]