A good friend of mine died of cancer a couple years ago. His widow remarried and they've moved to the Bakken Fields where work is plentiful and according to her new husband, will be for years which will probably be long enough for them to retire.
Where they'll retire to is a subject they don't talk about much.
The Bakken Shale is a subsurface rock formation in the Williston Basin that encompasses large swathes of western North Dakota, spilling into Montana and Saskatchewa. Drillers hit oil in the Bakken in 1951 and it has been long known to hold vast reserves, but it wasn’t until a decade ago that drillers had the technical means to extract it in large volumes — horizontal drilling and hydraulic fracturing opened up the gusher. While the shale contains oil and gas, drillers in the Bakken are after the oil. As for the gas, it just gets burned off in fiery flares that can be seen for miles.