Specific type of Lift Mechanism based on reducing the bottom-hole pressure by creating a differential pressure at bottom-hole nozzle-venturi pair with high-pressure flowstream from surface.
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It is used both for permanent production and for wellbore surveys (pressure build-ups and wellbore logging).
See Also
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Petroleum Industry / Upstream / Production / Subsurface Production Operations / Well Control / Lift Mechanism
References
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https://production-technology.org/advantages-disadvantages-of-jet-pumps-as-artificial-lift-method/