EntityQ1820425· pop 18· linked from 391 articlespumpjackSign in to savethumb|A diagram of a pumpjack|350pxArticle7 sectionsContentsAbove groundDown-holeWater well pumpjacksSee alsoNotesReferencesExternal linksthumb|A diagram of a pumpjack|350pxA pumpjack is the overground drive for a reciprocating piston pump in an oil well.Read full article (22 paragraphs)Gallery (6)ConnectionspipelineEntitypetroleumEntityCategoriesPetroleum technologyPumps