Nodding Donkeys T-Shirt

Nodding Donkeys A pair of green pumpjacks stands under a cloudy blue sky, which might suggest they are part of an oil extraction site. Enclosed by metal fencing, the mechanical structures give an impression of an industrial operation amidst a natural environment. A pumpjack is the overground drive for a reciprocating piston pump in an oil well. It is used to mechanically lift liquid out of the well if there is not enough bottom hole pressure for the liquid to flow all the way to the surface. The arrangement is often used for onshore wells. Pumpjacks are common in oil-rich areas.