Nodding donkey pumps

A pumpjack or nodding donkey is the overground drive for a submersible pump in a borehole. The technical term for the mechanism is a walking beam, "beam" as in a structural element. These pumps are typically used to bring up crude oil from oil wells.

Photos

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  Nodding donkey pump in California, USA
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  Nodding donkey pump in Louisana, USA
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  Nodding donkey pump in Bashkortastan, Russia
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  Nodding donkey pump in Austria (Lufkin Mk. II)
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  Old pumpjack in Kern West Oil Museum, Taft, CA
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  Small pumpjack in Muzeum Przemysłu Naftowego i Gazowniczego
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  Nodding donkey pump in Wolkersdorf, Austria
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  A colorful nodding donkey pump in the US, painted to resemble a stylized toucan, and on the background fence a sign with the logo of Shell (Shell Oil Company, a wholly-owned subsidiary in the US of the British-Dutch Royal Dutch Shell); image courtesy of the United States Department of Energy

Diagrams

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  Labeled diagram (png)
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  Unlabeled diagram (svg)
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  Numbered diagram (svg)

See also

• Drilling rig