Pumpjack Diagram: How Oil Extraction Works - Engineering Illustration #2210207 (License: Personal Use)

This black-and-white engineering diagram illustrates a conventional beam pump (pumpjack) used in oilfields to lift crude oil from deep underground reservoirs via reciprocating motion. Key components shown include the walking beam, counterweights, horsehead, polished rod, and the sucker rod string extending into the wellbore to drive a subsurface plunger pump. The cutaway view clarifies how surface mechanical action translates into vertical fluid displacement below ground.

Used in educational resources, energy sector websites, petroleum engineering textbooks, and technical documentation to explain artificial lift methods; targets students, engineers, and industry professionals seeking mechanistic understanding of oil production systems.