This is actually North Dakota's second oil boom. The first one tapered off as oil prices fell below profitability levels for the small amounts that were being extracted. Still, when I lived there, and traveled the western half of the State, the landscape was dotted with working pump jacks.
Now oil market prices, and newer extraction techniques, have made North Dakota attractive again to the industry. Not much out there in the Badlands (some counties are designated as "frontier" by the US Census Bureau because the population density is less than 2 persons per square mile), so nobody to keep an eye on what's happening. Probably America's next environmental disaster that US taxpayers will eventually get the clean-up bill for.