Oil derrick vs pump jack

The oil derrick pump is known colloquially as a sucker rod pump, named for the plunger-like mechanics it uses to pump oil from underground wells up to the surface. It uses a series of gears and cranks to pump a polished rod up and down an oil well in a piston-like motion, albeit much slower. This design is used to conserve energy while bringing a continuous, reliable flow of oil from deep wells to the surface.

Oil Rig derrick

How an Oil Derrick works

automatic balanced pumping unit

Oil derrick vs pump jack

Oil well pumpjacks
shengli oilfield oil pump jack

How Do Oil Pumpjacks Work?

automatic balanced pump jack

double horsehead pumping unit

lp oil pump jack