Surface equipment in oil extraction
The oil landscape par excellence has always been dominated by the image of the pumpjacks, used since the beginning of oil extraction to this day. The iconic universal image regarding oil extraction is the pumpjack : one of the superficial pumping units in oil extraction, apart from the hydraulic unit. This pumping unit converts the angular movement of the shaft of a motor or reciprocal vertical into the ability to drive the string of rods and pump the subsoil to bring the hydrocarbon to the surface. The revolutions per minute of the driving machine are closely linked to the variation of the pumpjack's speed and the variation of the counterweight acts against loads of bars and fluids of the well.