This North Dakota Oil and Gas pump jack works day and night extracting the valuable oil and gas mineral resources found in the Bakken formation of the Williston Basin in western North Dakota.

Oil Pump Jacks are also know as "pumping units".  These pumping units pull miles of "sucker" rod that is rigged with packers to make a pump. 

The Williston Basin Sweet crude is either pumped into tanks on location to be later trucked to the refinery or into a pipeline that flows to the oil and gas refinery.  Oil Pump jacks are powered with electric motors if electricity is available, if not, then they run on propane powered motors in remote locations.

ND Oil and Gas wells that aren't on a pipeline have to be visited on a regular basis by a "pumper".  This is either an oil company employee or an oil field services subcontractor.  This individual "gauges" the tanks to determine how much oil has been produced and inspects the equipment to determine what oil field equipment maintenance needs to be done.