A colourful nodding donkey in the United States

A nodding donkey is the overground drive for a submersible pump in a borehole. A colourful nodding donkey in the United States File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... A colourful nodding donkey in the United States File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... A submersible pump is a pump which has a hermetically sealed motor close-coupled to the pump body. ... Water borehole in northern Uganda A borehole is a deep and narrow shaft in the ground used for abstraction of fluid or gas reserves below the earths surface. ...

A nodding donkey or horsehead pump is usually driven by an electric motor and 'nods' at a regular rhythm. Depending on the size of the submersible pump, it produces 5 to 40 litres of petroleum-water mixture at each stroke. A 2 inch (50 mm) diameter metal rod connects the head to the pump, located underground in the oil reservoir. Electric motors of various sizes. ... Rhythm (Greek ρυθμός = tempo) is the variation of the duration of sounds or other events over time. ... A submersible is another name for a submarine, and is the normal term for civilian and non-combatant military designs, particularly midget submarines. ... A pump is a mechanical device used to move liquids or gases. ... The litre (spelled liter in American English) is a metric unit of volume. ... Nodding donkey pumping an oil well near Sarnia, Ontario, 2001 Petroleum (from Latin petra – rock and oleum – oil), crude oil, sometimes colloquially called black gold, is a thick, dark brown or greenish flammable liquid, which exists in the upper strata of some areas of the Earths crust. ... Water (from the Old English word wæter; c. ... Mid-19th century tool for converting between different standards of the inch An inch is an Imperial and U.S. customary unit of length. ... Generally, a reservoir is something that can hold matter or energy. ...

This system is also commonly referred to as a beam pump, rod pump, grasshopper, pump jack, or jack pump. This type of arrangement is commonly used in onshore applications for relatively low-production oil wells. An oil well is a laymans term for any perforation through the Earths surface designed to find and release both petroleum oil and gas hydrocarbons. ...